Idea Transcript
Analog Switch Guide The TI signal switch product portfolio consists of high-performance, low-power digital, analog and specialty switches.
www.ti.com/switches
2012
Analog Switch Overview ➔ Table of Contents / Introduction Today’s competitive environment creates a constant need for higher performance. One common method to optimize system performance involves the use of FET switches (also referred to as signal switches) to provide a high-speed bidirectional bus interface between DSPs, CPUs, industry standard buses, memory and peripherals. The Texas Instruments (TI) signal switch product portfolio consists of digital switches, analog switches and specialty switches that provide high-performance, low-power replacements for standard bus-interface devices when signal buffering (current drive) is not required. Availability in advanced packaging (BGA, QFN and WCSP) also allows TI signal switches to occupy reduced board area in space-constrained applications. TI signal switches optimize next-generation datacom, networking, computing, portable communications and consumer electronic designs by supporting both digital and analog applications. Analog Switches TI’s analog switches are designed to pass (or isolate) analog signals (both voltage and current) and support
Analog Switch Overview Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Selecting the Right TI Analog Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Analog Switches Selection Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Pinouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Specialty Switches Selection Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Pinouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Resources Packages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 Sample and Quality Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 Worldwide Technical Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
analog applications such as audio and video data transmission. TI analog switches are available in a wide range of voltages (from 0.8 to 12 V), support fast data throughput (up to 2-GHz bandwidth) and offer low on-resistance and input capacitance for decreased signal distortion and insertion loss. TI analog switches are available in the TI Switch (TS) technology family. The TS product family encompasses a variety of analog switches with different ON resistances, bandwidth, charge injection, and total harmonic distortion to target any application.
Switch Nomenclature TS-Series Analog and Speciality Switch Part Numbers
TS
3
V
330
RGY
R
Prefix: TS = TI Signal switch, TSU = TI Smart switch Max V+ (VCC) Voltage: 3 = 3.3 V, 5 = 5 V Type: A = Analog switch, AP = Analog switch with over/undershoot protection, DV = Digital video switch V = Video switch, L = LAN switch, N = Network switch, PCIE = PCI Express® switch Typical Device Number Typical Package Designator Tape and Reel: R or none = standard reel, T = small reel
Analog Switch Guide
2
Texas Instruments 2012
Analog Switch Overview ➔ Selecting the Right TI Analog Switch
Specified Voltage Range (V+)
TS5A31xx TS5A231xx TS5A46xx Series 5 4
TS5A6xxx TS5A26xxx Series
TS5A1xxx TS5A2xxx TS5A45xx Series
TS3A4xxx TS3A24xxx Series
TS3A5xxx Series
3 2 1
• Low Voltage • Low ron
• Low ron • Wide Operating Range
• Low ron • Wide Operating Range • High ESD • Control Input Voltage Translation
• Lower Con • Higher Bandwidth
0.25 to 3 Ω
• Low Voltage • Lower Con • Higher Bandwidth
Specified Voltage Range (V+ and –(V-)
Analog Switch Family
15
TS12A12511
TS12A451x
TS12A4451x
10
5
0
• Dual Supply • Wide Operating Range • SPDT
8 to 15 Ω
• Single or Dual Supply • Wide Operating Range • SPST 0 to 20Ω
• Single or Dual Supply • Wide Operating Range • SPST x4
ON-State Resistance Range (ron )
When switches are first considered, a schematic of the ideal switch (similar to the one below) might come to mind. In figure 1, an input signal applied to the left I/O pin (or port) results in an identical output signal at the right I/O pin, and vice versa. However, in the real world, switches are not ideal; and there is always some loss. In the case of clean, properly working mechanical switches, the loss is so miniscule that it hardly bears noting. Ideal Switch
I/O
I/O
(In)
(Out) Signal In = Signal Out
Fig. 1
Like mechanical switches, solid-state switches are not ideal either. In fact, losses associated with solid-state switches can be significant. Why use a switch like this if it is so far from ideal? The answer is convenience and reliability. Mechanical switches are subject to wear out and mechanical reliability issues. Solid-state switches are small, fast, easy-to-use and
Analog Switch Guide
easy-to-control and consume relatively little power compared to traditional electrically controlled switches such as relays. The switches referred to here are Complementary Metal-Oxide Semiconductor (CMOS) Field-Effect Transistor (FET) switches.
• What is the maximum signal distortion limit for the system?
Digital vs. Analog Signal Switches
V+ — For noncharge-pump switches, V+ determines the analog signal amplitude that can be passed without clipping. The gate(s) of the pass transistors must be biased relative to the minimum and maximum values of the expected input voltage range. Some switches allow for biasing from two supplies, making it easy to pass both positive and negative signals. Switches with integrated charge pumps can elevate the gate voltage above V+ (at the expense of larger I+) and thus pass signals of a magnitude greater than V+.
Digital switches are designed to pass (or isolate) digital signal levels and may exhibit the capability to satisfactorily pass analog signals. Examples are CBT and CBTLV switch families. Analog switches are designed to pass (or isolate) analog signals and often exhibit good digital signal performance as well. One example is TI’s TS technology. TI offers a wide variety of signal switches, and sometimes the nomenclature can be confused to imply limited functionality for a device or family. However, it should be apparent the most important switch characteristic depends on how it is used: • What V+ levels are present? • What amplitude signals are required to be passed?
3
The following are some things to consider when selecting the right analog switch.
Analog Signal Considerations
VIH/VIL — Why are these important analog switch considerations? In most applications, the signal switch is controlled by the output of a digital source; therefore, the control signal levels, VIH and VIL, must be compatible with that source to ensure proper operation of the switch.
Texas Instruments 2012
Analog Switch Overview ➔ Selecting the Right TI Analog Switch (Continued)
ON-State Resistance Flatness (rON(flat)) — Specifies the minimum and maximum value of rON over the specified range of conditions. These conditions are typically changes in temperature or supply voltage. Figure 2 is an example of rON(flat). Typical rON(flat) Measurement 2.5
ron(flat) (Ω)
2.0
Flatness
1.0 0.5
Fig. 2 VCOM (V)
On/Off Capacitance (CON/COFF) — Total switch and load capacitance must be considered because it can affect response time, settling time and fanout limits. Frequency Response — All CMOS switches have an upper limit to the frequency that can be passed. No matter how low rON and CI/O can be maintained in the chip manufacturing process, they still form an undesired low-pass filter that attenuates the switch output signal. Sine-Wave Distortion or Total Harmonic Distortion (THD) — These are measurements of the linearity of the device. Nonlinearity can be introduced in a number of ways (design, device physics, etc.); but typically the largest contributor is rON, which varies with VI/O for all types of CMOS switches. Having a low rON is important, but Analog Switch Guide
Crosstalk — There are two types of crosstalk to consider: • Control (enable) to output — The level of crosstalk is a measure of how well decoupled the switch control signal is from the switch output. Due to the parasitic capacitance of CMOS processes, changing the state on the control signal causes noise to appear on the output. In audio applications, this can be a source of the annoying pop that is sometimes heard when switching the unit on or off. • Between switches — The level of crosstalk also is a measure of adjacent-channel rejection. As with control-to-output crosstalk, parasitic capacitance can couple the signal on one switch with that on another switch.
1.5
0
a flat rON over the signal range is as equally important. For signal ranges of 0 < VI/O < (V+ – 2 V), n-channel switches exhibit very flat rON characteristics; but rON increases very rapidly as VI/O approaches V+ and VGS decreases. Parallel n-/p-channel switches offer good rON flatness for signal ranges of 0 < VI/O < V+, with the best flatness characteristic at the highest recommended switch V+.
OFF Isolation — A measurement of OFF-state switch impedance. It is measured in dB at a specific frequency with the corresponding channel (NC to COM or NO to COM) in the OFF state. Feedthrough — This characteristic is related to the ability of the switch to block signals when off. As with crosstalk, parasitic capacitance allows high frequencies to couple through the switch, making it appear to be on. Charge Injection (Q) — TI specifies enable-to-output crosstalk, and some competitors use this parameter. As with enable-to-output crosstalk, changing the state on the control pin causes a charge to be coupled to the channel of the transistor, introducing signal noise. It is presented in this report for a relative comparison with the competition. A graph of bias voltage vs. charge injection is displayed in figure 3 above.
4
Typical Charge Injection Plot
Charge Injection (pC)
ON-State Resistance (rON) — Because rON contributes to signal loss and degradation, low-rON tradeoffs must be considered. Non-charge pump switches achieve low rON with large pass transistors. These larger transistors lead to larger die sizes and increased CI/O. This additional channel capacitance can be very significant, as it limits the frequency response of the switch. Switches using charge-pump technology can achieve low rON and CI/O but require significantly higher I+.
70 60 50 40 30 20 10 0 -10 -20 -30
V+ = 3 V V+ = 5 V
Fig. 3 0
1
2 3 4 Bias Voltage (V)
5
6
Typical BBM Timing Logic Input (VI ) Switch Output (VCOM )
V+ 50% 0 90%
90%
tBBM
Fig. 4
Typical MMB Timing Logic Input (VI) VNC Switch Output VNO
V+
50%
0 0.8 VOUT
0.8 VOUT tMBB
Fig. 5
Break-Before-Make (BBM) Time — Guarantees that two multiplexer paths are never electrically connected when the signal path is changed by the select input. This parameter is measured under a specified range of conditions and by the propagation delay between the output of two adjacent analog channels (NC and NO), when the control signal changes state (as shown in figure 4 above). Make-Before-Break (MBB) Time — Guarantees that two multiplexer paths are never open when the signal path is changed by the select input. This parameter is measured under a specified range of conditions and by the propagation delay between the output of two adjacent analog channels (NC and NO), when the control signal changes state (as shown in figure 5 above).
Texas Instruments 2012
Analog Switches ➔ Selection Tables Analog Switch Configurations rON (typ)
rON Flatness (typ)
rON Mismatch (typ)
ESD
ON Time (ns) (typ)
OFF Time (ns) (typ)
Pins/Packages
TS5A3166
0.9
0.15
—
1.65
5.5
2 kV HBM
4.5
9
5/SC70,SOT-23, WCSP
TS5A3167
0.9
0.15
—
TS5A4594
8
1.5
—
1.65
5.5
2 kV HBM
4.5
9
5/SC70,SOT-23, WCSP
2.7
5.5
2 kV HBM
12
9
5/SC70,SOT-23
TS5A4595
8
1.5
—
2.7
5.5
2 kV HBM
12
9
5/SC70,SOT-23
TS5A4596
8
1.5
—
2.7
5.5
2 kV HBM
12
9
5/SC70,SOT-23
TS5A4597 TS12A4514
8
1.5
—
2.7
5.5
2 kV HBM
12
9
5/SC70,SOT-23
6.5
1
—
3
12
—
22
20
8/SOIC, 8DIP, 5SOT-23
TS12A4515
6.5
1
—
3
12
—
22
20
8/SOIC, 8DIP, 5SOT-23
TS12A4516
12
1.2
—
±1.65
±6
—
58
28
8/SOIC, 8DIP, 5SOT-23
Dual Supply
TS12A4517
12
1.2
—
±1.65
±6
—
58
28
8/SOIC, 8DIP, 5SOT-23
Dual Supply
TS5A1066
7.5
2.5
—
1.65
5.5
2 kV HBM
4.8
3
5/SC70,SOT-23, WCSP
TS5A23166
0.9
0.25
0.1
1.65
5.5
2 kV HBM
4.5
8
8/US8,WCSP
TS5A23167
0.9
0.25
0.1
1.65
5.5
2 kV HBM
4.5
8
8/US8,WCSP
TS5A2066
7.5
3.5
0.4
1.65
5.5
2 kV HBM
5.2
2.6
8/USB, 8/SM8, 8/WCSP
TS3A4741
0.7
0.23
0.03
1.65
3.6
—
5
4
8/SSOP/MSOP
TS3A4742
0.7
0.23
0.03
1.65
3.6
—
5
4
8/SSOP/MSOP
TS3A4751
0.7
0.23
0.03
1.65
3.6
4 kV HBM
5
4
14/TSSOP, SON, µQFN
TS12A44513
6.5
1
2.5
2
12
2 kV HBM
25
20
14/TSSOP, 14/SOIC
TS12A44514
6.5
1
2.5
2
12
2 kV HBM
25
20
14/TSSOP, 14/SOIC
TS12A44515
6.5
1
2.5
2
12
2 kV HBM
25
20
14/TSSOP, 14/SOIC
TS5A2053
7.5
1.7
0.8
1.65
5.5
2 kV HBM
5.3
1.9
8/SM8/US8
TS5A3157
10
4
0.15
1.65
5.5
2 kV HBM
6
3.5
6/SC70,SOT-23,WCSP
TS5A63157
4
1.5
0.05
1.65
5.5
2 kV HBM
3.4
2.8
6/SC70, SOT-23
Undershoot/Overshoot Protection Single or Dual Supply
Device
v + (v)
min
v + (v)
max
Features
SPST
SPST x 2
SPST x 4
SPDT
5
1.3
1
±2.7
±6, +12
2 kV HBM
56
25
8/SON, 8/SOT-23, 8/MSOP
TS5A3153
0.8
0.09
0.05
1.65
5.5
2 kV HBM
12.5
8.5
8/US8/WCSP
TS5A3154
0.8
0.09
0.05
1.65
5.5
2 kV HBM
5.2
9.5
8/US8/WCSP
TS5A9411
5.3
0.03
2
2.25
5.5
2 kV HBM
9
7
6/SC70
TS5A3159
0.75
0.15
0.1
1.65
5.5
2 kV HBM
20
15
6/SC70, SOT-23
TS5A3159A
0.7
0.1
0.05
1.65
5.5
2 kV HBM
12
5
6/SC70,SOT-23,WCSP
TS12A12511
Analog Switch Guide
5
Texas Instruments 2012
Analog Switches ➔ Selection Tables Analog Switch Configurations (Continued) Device
rON (typ)
rON Flatness (typ)
rON Mismatch (typ)
v + (v)
min
v + (v)
max
ESD
ON Time (ns) (typ)
OFF Time (ns) (typ)
Pins/Packages
Features
SPDT (continued) TS5A3160
0.7
0.1
0.05
1.65
5.5
2 kV HBM
3.5
3.5
6/SC70, SOT-23
TS5A4624
0.7
0.1
0.05
1.65
5.5
2 kV HBM
12
5
6/SC70
TS5A6542
0.5
0.1
0.05
2.25
5.5
±15 kV Contact (IEC L-4)
12.5
9.5
8/WCSP, µQFN
TS5A12301E
0.5
0.1
0.05
2.25
5.5
±15 kV Air-Gap
72
80
6/WCSP (0.4mm pitch)
TS5A23157
10
4
0.15
1.65
5.5
2 kV HBM
5.7
3.8
10/MSOP, µQFN
TS5A623157
4
4
0.15
1.65
5.5
2 kV HBM
3.5
2.8
10/MSOP, µQFN
TS5A23159
0.7
0.1
0.05
1.65
5.5
2 kV HBM
8
5
10/MSOP/QFN
TS3A24157
0.5
0.01
0.05
1.65
3.6
2 kV HBM
20
12
10/ µQFN, VSSOP
Ultra-Low
TS3A24159
0.26
0.01
0.01
1.65
3.6
2 kV HBM
20
12
10/WCSP, SON, VSSOP
RON
TS5A26542
0.5
0.1
0.05
2.25
5.5
±15 kV Contact (IEC L-4)
12.5
9
12/WCSP
TS3A225E
0.1
—
—
2.7
4.5
±8kV Contact Discharge (IEC L-4)
21
21
16/WCSP, QFN
Autonomous Audio Headset Switch
TS3A26746E
0.08
—
—
3
3.6
±8kV Contact Discharge (IEC L-4)
150
5
6/WCSP
2 X 2 Crosspoint Switch for Audio Applications
TS5A22362
0.52
0.076
0.04
2.3
5.5
2.5 kV HBM
27
13
10/WCSP, 10/SON, VSSOP
Negative Rail Capability
TS5A22364
0.52
0.076
0.04
2.3
5.5
2.5 kV HBM
27
13
10/WCSP, 10/SON, VSSOP
Negative Rail Capability, Click Pop Suppression
TS5A22366
0.7
0.135
0.05
2.25
5.5
2.5 kV HBM
193
182
12/WCSP (0.4mm pitch), 10/µQFN
Negative Rail Capability
TS3A5018
7
5
0.3
1.65
3.6
2 kV HBM
3.5
2
16/SOIC, SSOP, (QSOP), TSSOP, TVSOP, SON
TS3A44159
0.3
0.07
0.045
1.65
4.3
2 kV HBM
17
12
16/TSSOP, SON, µQFN
4.4
0.91
0.3
1.65
3.6
±6 kV Contact (IEC L-3)
14.1
16.1
24BGA, SON
0.7
0.1
0.1
1.65
5.5
2 kV HBM
2.5
6
8/US8, 8/WCSP
11
7
1
2.3
3.6
2 kV HBM
5
1.5
16/SOIC, SSOP, (QSOP), TSSOP, TVSOP, SON, µQFN
1.8-V Logic Compatible Logic Threshold Independently of V+
SPDT x 2 Overshoot/Undershoot Protection
SPDT x 4
SPDT x 6 TS3A27518E
SP3T TS5A3359
SP4T x 2 TS3A5017
New products are listed in bold red.
Analog Switch Guide
6
Texas Instruments 2012
Analog Switches ➔ Selection Tables Analog Switch Configurations (Continued) Device
rON (typ)
Normally Closed (NC)
Normally Open (NO)
Enable Pin
Break Before Make (BBM)
Make Before Break (MBB)
Over-/Undershoot Protectiom
IOFF
SPST TS5A3166
0.9
X
TS5A3167
0.9
TS5A4594
8
TS5A4595
8
TS5A4596
8
TS5A4597
8
TS12A4514
6.5
TS12A4515
6.5
TS12A4516
12
TS12A4517
12
TS5A1066
7.5
X
TS5A23166
0.9
X(2)
TS5A23167
0.9
TS5A2066
7.5
X(2)
TS3A4741
0.7
X(2)
TS3A4742
0.7
X
X
X X
X X X X X X X
SPST x 2 X
X(2)
X
X(2)
SPST x 4 TS3A4751
0.7
TS12A44513
6.5
TS12A44514
6.5
TS12A44515
6.5
X(4) X(2)
X(2) X(4)
X(4)
SPDT TS5A2053
7.5
TS5A3157
10
X
TS5A63157
4
X
TS12A12511
5
X
TS5A3153
0.08
X X
X
X
X
X
TS5A3154
0.08
TS5A9411
5.3
X
TS5A3159
0.75
X
TS5A3159A
0.7
X
X
TS5A3160
0.7
X
X
Analog Switch Guide
X
7
X
Texas Instruments 2012
Analog Switches ➔ Selection Tables Analog Switch Configurations (Continued) Device
rON (typ)
Normally Closed (NC)
Normally Open (NO)
Enable Pin
Break Before Make (BBM)
Make Before Break (MBB)
Over-/Undershoot Protectiom
IOFF
SPDT (continued) TS5A4624
0.7
X
X
TS5A6542
0.5
X
TS5A12301E
0.5
X
10
X
X
TS5A623157
4
X
X
TS5A23159
0.7
X
TS3A24157
0.5
X
TS3A24159
0.26
X
X
SPDT x 2 TS5A23157
X
X
TS5A26542
0.5
X
TS3A225E
0.1
x
x
TS3A26746E
0.08
X
X
TS5A22362
0.52
X
TS5A22364
0.52
X
TS5A22366
0.7
X
SPDT x 4 TS3A5018
7
TS3A44159
0.3
X X
SPDT x 6 TS3A27518E
4.4
X
X
SP3T TS5A3359
0.7
X
X
SP4T x 2 TS3A5017
11
X New products are listed in bold red.
Analog Switch Guide
8
Texas Instruments 2012
Analog Switches ➔ Pinouts SPST TS5A4594, TS12A4514, TS12A4516
TS5A1066, TS5A3166 NO
1
COM
2
GND
3
5
4
V+
IN
TS5A3167 NC
1
COM
2
GND
3
COM
1
NO
2
GND
3
5
4
TS5A4596 V+
IN
1
COM
2
GND
3
4
V+
IN
COM
1
NC
2
GND
3
TS12A4514, TS12A4516
5
4
5
V+
4
NO
5
V+
4
NC
TS5A4597
TS5A4595, TS12A4515, TS12A4517 5
V+
IN
IN
1
COM
2
GND
3
TS12A4515, TS12A4517
COM 1
8 NO
COM 1
N.C. 2
7 GND
N.C. 2
7 GND
N.C. 3
6 IN
N.C. 3
6 IN
V+ 4
IN
8 NC
V+ 4
5 N.C.
5 N.C.
SPST x 4 TS3A4751, TS12A44514
TS12A44513
NO1 1
14
V+
COM1 2
13
IN1
NO2
3
12 IN4
COM2
4
11 NO4
IN2
5
IN2
6
IN2
7
NO1 1
14
V+
COM1 2
13
IN1
NC2
3
12 IN4
COM2
4
11 NC4
10 COM4
IN2
5
9
COM3
IN3
6
8
NO3
GND
7
TS12A44516, TS40A41612, TS40A41642 IN1 1
16
IN2
COM1 2
15
COM2
NO1
3
14 NO2
V–
4
13 V+
GND
5
NO4
6
COM4
7
10 COM3
IN4
8
9
Analog Switch Guide
TS12A44515 14
V+
13
IN1
NC2
3
12 IN4
COM2
4
11 NC4
10 COM4
IN2
5
10 COM4
9
COM3
IN3
6
9
COM3
8
NO3
GND
7
8
NC3
TS12A44517, TS40A41611, TS40A41641 IN1 1
16
IN2
COM1 2
15
COM2
NC1
3
14 NC2
V–
4
13 V+
12 N.C.
GND
5
11 N03
NC4
6
COM4
7
10 COM3
IN4
8
9
IN3
NC1 1 COM1 2
9
TS12A44518 IN1 1
16
IN2
COM1 2
15
COM2
NO1
3
14 NC2
V–
4
13 V+
12 N.C.
GND
5
12 N.C.
11 NC3
NO4
6
11 NC3
COM4
7
10 COM3
IN4
8
9
IN3
IN3
Texas Instruments 2012
Analog Switches ➔ Pinouts SPDT x 2
TS5A23157, TS5A23159, TS5A23160 IN1
1
10
COM1
NO1
2
9
NC1
GND
3
NO2 IN2
SPDT x 4
TS5A22364
8
V+
4
7
NC2
5
6
COM2
Audio Source 1
V+
1
10
NO2
NO1
2
9
COM2
COM1
3
8
NC2
NC1
4
7
IN2
IN1
5
6
GND
OUT+ OUT–
COM1
NO1 Shunt Switch IN2
NC2
OUT–
2
15
EN
NC1
3
14
NC4
4
13
NO4
NC2
5
12
COM4
NO2
6
11
NC3
COM2
7
10 NO3
GND
8
9
COM2
OUT+
V+
1
NO1 Input Select
8-Ω Speaker
Logic Control
16
IN
COM1
NC1
IN1
Audio Source 2
TS3A5018
COM3
NO2
SP3T
TS5A3357, TS5A3359 NO0
1
8
V+
NO1
2
7
COM
NO2
3
6
IN1
5
IN2
GND
Logic Control
4
D! C! B! A!
4! /MIC_PRESENT! RING2! SLEEVE! DET_TRIGGER!
4
3
2
1
D
D4
D3
D2
D1
C
C4
C3
C2
C1
B
B4
B3
B2
B1
A
A4
A3
A2
A1
TSA225E
3! TIP_SENSE ! GND(1)! GND(1)! ADDR_SEL!
2! MICp! VDD(1)! VDD(1)! SDA!
1! MICn! RING2_SENSE! SLEEVE_SENSE! SCL!
SP4T x 2 TS3A5017
YZP Package (Top View)
1
2
TS3A26746E
1
2
A
SEL
V+
B
MIC
SLEEVE
C
GND
RING2
A B C
Analog Switch Guide
10
Logic Control
Logic Control
16
V+
2
15
2EN
1EN
1
IN 2 1S4
3
14
IN1
1S 3
4
13
2S4
1S2
5
12
2S 3
1S1
6
11
2S2
1D
7
10
2S1
GND
8
9
2D
Texas Instruments 2012
Analog Switches ➔ Applications 2x2 Crosspoint Switch for Audio Applications TS3A26746E Get samples, data sheets and app reports at: www.ti.com/sc/device/ts3a26746e Key Features • Superior PSRR performance (-75 dB) • Control input is 1.8 V logic compatible • ESD performance (SLEEVE, RING2) o ±8-kV contact discharge (IEC 61000-4-2) • 6-bump, 0.5 mm pitch CSP package (1.45 x 0.95 x 0.5 mm) Applications • Cellular phones • Digital still cameras • PDAs • Portable instrumentation • Portable navigation devices
The TS3A26746E is a 2 × 2 cross-point switch that is used to interchange the ground and MIC connections on a headphone connector. The ground switch has an ultra low rON of