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DG2741/2742/2743
New Product
Vishay Siliconix
Low-Voltage, 0.8-W rON, Dual SPST Analog Switch
FEATURES
D Low Voltage Operation (1.6 V to 3.6 V) D Low On-Resistance - rDS(on): 0.8 W @ 2.7 V D High Current Handling Capacity: 150-mA Continuous D Off-Isolation: -56 dB @ 1 MHz D Fast Switching: 25 ns tON D Low Charge Injection--QINJ: 5.8 pC D Low Power Consumption: t1 mW D ESD Protection u2,000 V
BENEFITS
D High Accuracy D High Bandwidth D TTL and Low Voltage Logic Compatibility D Low Power Consumption D Reduced PCB Space (SOT23-8 and MSOP-8)
APPLICATIONS
D Mixed Signal Routing D Portable and Battery Operated Systems D Low Voltage Data Acquisition D Modems D PCMCIA Cards
DESCRIPTION
The DG2741/2742/2743 are low voltage, single supply, dual SPST analog switches. Designed for high performance switching of analog signals, the DG2741/2742/2743 provide low on-resistance (0.8 @ +2.7 V), fast speed (tON, tOFF @ 35 ns and 33 ns) and the ability to handle signals over the entire analog voltage range. When operated on a +3-V supply, control pins are compatible with 1.8-V digital logic. Additionally,on-resistance flatness and matching (0.18 and 0.08 , respectively) offer high accuracy between channels. The DG2741 contains two normally open (NO) switches, the DG2742 contains two normally closed (NC) switches, and the DG2743 contains one normally open and one normally closed switch. Break-before-make is guaranteed.
Built on Vishay Siliconix's low voltage submicron CMOS process, the DG2741/2742/2743 were designed to offer solutions that extend beyond audio/video functions, to providing the performance required for today's demanding mixed-signal switching in portable applications.
FUNCTIONAL BLOCK DIAGRAM AND PIN CONFIGURATION DG2741
DG2741, MSOP-8
NO1 COM1 IN2 GND 1 2 3 4 Top View Device Marking: 2741 8 7 6 5 V+ IN1 COM2 NO2 IN1 V+ NO2 COM2 1 2 3 4 Top View Device Marking: F3
DG2741. SOT23-8
8 7 6 5 NO1 COM1 IN2 GND
TRUTH TABLE - DG2741 Logic
0 1 Document Number: 72708 S-32617--Rev. A, 29-Dec-03
Switch
Off On www.vishay.com
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DG2741/2742/2743
Vishay Siliconix
New Product
FUNCTIONAL BLOCK DIAGRAM AND PIN CONFIGURATION DG2742/DG2743
DG2742, MSOP-8
NC1 COM1 IN2 GND 1 2 3 4 Top View Device Marking: 2742 8 7 6 5 V+ IN1 COM2 NC2 IN1 V+ NC2 COM2 1 2 3 4 Top View Device Marking: F4
DG2742. SOT23-8
8 7 6 5 NC1 COM1 IN2 GND
TRUTH TABLE - DG2742 Logic
0 1
Switch
On Off
DG2743, MSOP-8
NO1 COM1 IN2 GND 1 2 3 4 Top View Device Marking: 2743 8 7 6 5 V+ IN1 COM2 NC2 IN1 V+ NC2 COM2 1 2 3 4
DG2743. SOT23-8
8 7 6 5 Top View Device Marking: F5 NO1 COM1 IN2 GND
TRUTH TABLE - DG2743 Logic
0 1
Switch-1
Off On
Switch-2
On Off
ORDERING INFORMATION Temp Range Package
MSOP-8 -40 to 85C 40 SOT23-8
Part Number
DG2741DQ-T1 DG2742DQ-T1 DG2743DQ-T1 DG2741DS-T1 DG2742DS-T1 DG2743DS-T1
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Document Number: 72708 S-32617--Rev. A, 29-Dec-03
DG2741/2742/2743
New Product
ABSOLUTE MAXIMUM RATINGS
Reference to GND V+ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to +4 V IN, COM, NC, NOa . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to (V+ + 0.3 V) Continuous Current (NO, NC and COM Pins) . . . . . . . . . . . . . . . . "200 mA Peak Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . "300 mA (Pulsed at 1 ms, 10% duty cycle) ESD per Method 3015.7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . u2 kV Storage Temperature (D Suffix) . . . . . . . . . . . . . . . . . . . . . . . . . . . . -65 to 150C Power Dissipation (Packages)c 6-Pin SC-70c . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250 mW Notes: a. Signals on NC, NO, or COM or IN exceeding V+ will be clamped by internal diodes. Limit forward diode current to maximum current ratings. b. All leads welded or soldered to PC Board. c. Derate 3.1 mW/_C above 70_C
Vishay Siliconix
Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
SPECIFICATIONS (V+ = 1.8 V)
Test Conditions Otherwise Unless Specified Parameter Analog Switch
Analog Signal Ranged On-Resistance rON Flatnessd rON Matchd VNO, VNC, VCOM rON rON Flatness DrON INO(off), INC(off) ICOM(off) Channel-On Leakage Current f ICOM(on) V+ = 1.8 V VNO, VNC = 0.2 V/2.0 V, VCOM = 1.5 V/0.3 V V+ = 1.8 V, VCOM = 0.9 V INO, INC = 10 mA V+ = 1.8 V, VCOM = 0 to V+, INO, INC = 10 mA Full Room Fulld Room Room Room Fulld Room Fulld Room Fulld -1 -10 -1 -10 -1 -10 0 0.9 0.25 0.05 1 10 1 10 1 10 nA V+ 2.5 4.0 W V
Limits
-40 to 85_C
Symbol
V+ = 1.8 V, "10%, VIN = 0.4 or 1.0 Ve
Tempa
Minb
Typc
Maxb
Unit
Switch Off Leakage Currentf
V+ = 1.8 V, VNO, VNC = VCOM = 0.3 V/1.5 V
Digital Control
Input High Voltage Input Low Voltage Input Capacitanced Input Currentf
VINH
Full Full Full VIN = 0 or V+ Full
1.0 0.4 5.5 -1 1
VINL
Cin
V pF mA
IINL or IINH
Dynamic Characteristics
Turn-On Timed Turn-Off Timed Break-Before-Make Timed Charge Injectiond Off-Isolationd Crosstalkd NO, NC Off Capacitanced Channel-On Capacitanced Document Number: 72708 S-32617--Rev. A, 29-Dec-03 tON tOFF td QINJ OIRR XTALK CNO(off), CNC(off) CON CL = 1 nF, VGEN = 0 V, RGEN = 0 W, Figure 3 RL = 1 kW CL = 5 pF f = 1 MHz kW, pF, VNO or VNC = 1 5 V RL = 50 W CL = 35 pF 1.5 V, W, F Figures 1 and 2 Room Fulld Room Fulld Room Room Room Room Room Room 3 20 55 91 88 105 www.vishay.com pC dB 33 27 45 50 40 45 ns
VIN = 0 or V+, f = 1 MHz
pF
3
DG2741/2742/2743
Vishay Siliconix
SPECIFICATIONS (V+ = 3.0 V)
Test Conditions Otherwise Unless Specified Parameter Analog Switch
Analog Signal Ranged On-Resistance rON Flatness rON MatchFlat VNO, VNC, VCOM rON rON Flatness DrON INO(off), INC(off) ICOM(off) Channel-On Leakage Current ICOM(on) V+ = 3.3 V VNO, VNC = 0.3 V/3 V, VCOM = 3 V/0.3 V V+ = 2.7 V, VCOM = 0.2 V/1.5 V, INO INC = 100 mA V+ = 2.7 V, VCOM = 1.5, 2 V, INO, INC = 100 mA Full Room Full Room Room Room Full Room Full Room Full -1 -10 -1 -10 -1 -10 0 0.4 V+ 0.8 0.9 0.18 0.08 1 10 1 10 1 10 nA W V
New Product
Limits
-40 to 85_C
Symbol
V+ = 3 V, "10%, VIN = 0.5 or 1.4 Ve
Tempa
Minb
Typc
Maxb
Unit
0.08 0.05
Switch Off Leakage Current
V+ = 3.3 V, VNO, VNC = VCOM = 0.3 V/3 V
Digital Control
Input High Voltage Input Low Voltage Input Capacitanced Input Currentf
VINH
Full Full Full VIN = 0 or V+ Full
1.4 0.5 5.5 -1 1
VINL
Cin
V pF mA
IINL or IINH
Dynamic Characteristics
Turn-On Time Turn-Off Time Break-Before-Make Time Charge Injectiond Off-Isolationd Crosstalkd NO, NC Off Capacitanced Channel-On Capacitanced tON tOFF td QINJ OIRR XTALK CNO(off), CNC(off) CON CL = 1 nF, VGEN = 0 V, RGEN = 0 W, Figure 3 RL = 1 kW CL = 5 pF f = 1 MHz kW, pF, VNO or VNC = 1 5 V RL = 50 W CL = 35 pF 1.5 V, W, F V+ = 2.7 V, Figure 1 and 2 Room Full Room Full Room Room Room Room Room Room 1 5.8 -56 -89 81 103 pC dB 20 18 30 35 28 33 ns
V+ = 3.6 V, VIN = 0 or V+, f = 1 MHz
pF
Power Supply
Power Supply Range Power Supply Current Notes: a. b. c. d. e. f. Room = 25C, Full = as determined by the operating suffix. The algebraic convention whereby the most negative value is a minimum and the most positive a maximum, is used in this data sheet. Typical values are for design aid only, not guaranteed nor subject to production testing. Guarantee by design, nor subjected to production test. VIN = input voltage to perform proper function. Guaranteed by 3-V leakage testing, not production tested. V+ I+ V+ = 3.6 V, VIN = 0 or V+ 1.5 0.01 3.6 1.0 V mA
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Document Number: 72708 S-32617--Rev. A, 29-Dec-03
DG2741/2742/2743
New Product
TYPICAL CHARACTERISTICS (25_C UNLESS NOTED)
rDS(on) vs. VCOM vs. 1 VCC
0.7 V+ = 1.8 V, NC 0.6 0.5 rDS(on) (W) 0.4 0.3 0.2 0.1 0.0 0.00 0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00 2.25 2.50 2.75 VD (V) V+ = 2.7 V, NC V+ = 2.7 V, NO 0.6 0.5 rDS(on) (W) 0.4 0.3 0.2 0.1 0.0 0.00 0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00 2.25 2.50 2.75 VD (V) V+ = 2.7 V 85_C 25_C -40_C 0.7
Vishay Siliconix
rDS(on) vs. VD, VCC and Temperature
V+ = 1.8 V 85_C 25_C -40_C
V+ = 1.8 V, NO
Supply Current vs. Temperature
10,000 V+ = 3.6 V ICC Supply Current (pA) Power Supply Current (mA) 1000 10,000 1000 100 10
Switching Frequency vs. Supply Current
100
VIN = 0 V VIN = 3.6 V
1 0.1 0.01
10
1 -40
-20
0
20
40
60
80
100
0.01 K 0.1 K 1 K 10 K 100 K
1M
10 M 100 M
1G
Temperature (_C)
Inout Switching Frequency (Hz)
Leakage Current vs. Temperature
10000 V+ = 3.5 V Leakage Current (pA) Leakage Current (pA) 1000 ID(off) 100 IS(off) 10 2000
Leakage Current vs. Analog Voltage
V+ = 3.3 V 1500 1000 500 0 -500 -1000 -1500 ID(on) ID(off) IS(off)
ID(on) 1 -50 -25 0 25 50 75 100 -2000 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5
Temperature (_C)
VD (V)
Document Number: 72708 S-32617--Rev. A, 29-Dec-03
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DG2741/2742/2743
Vishay Siliconix
New Product
TYPICAL CHARACTERISTICS (25_C UNLESS NOTED)
Switching Time vs. VCC and Temperature
50 t OFF - Switching Time (ns) 45 tON, V+ = 1.8 V tOFF, V+ = 1.8 V tON, V+ = 2.7 V tOFF, V+ = 2.7 V Loss, OIRR, XTALK (dB) 40 35 30 25 20 15 10 5 0 -40 -20 0 20 40 60 80 100 -110 -130 10 K
Insertion Loss, Off-Isolation, Crosstalk vs. Frequency
10 -10 -30 -50 -70 -90 LOSS
v+ = 3.6 v v+ = 1.8 v OIRR XTALK
t ON,
100 K
1M
10 M
100 M
1G
Temperature (_C)
Frequency (Hz)
Switching Threshold vs. Supply Voltage
2.0 1.8 V T - Switching Threshold (V) 1.6 Q - Charge Injection (pC) 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0.0 0 1 2 3 4 5 6 V+ - Supply Voltage (V) -60 0.0 20 40
Charge Injection vs. Analog Voltage
V+ = 3.6 V 0 V+ = 1.8 V -20
-40
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
VCOM - Analog Voltage (v)
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Document Number: 72708 S-32617--Rev. A, 29-Dec-03
DG2741/2742/2743
New Product
TEST CIRCUITS
V+ Logic Input V+ Switch Input NO or NC IN Logic Input GND RL 50 W CL 35 pF COM Switch Output VOUT Switch Output 0V tON tOFF VINH VINL 0.9 x VOUT
Vishay Siliconix
50%
tr t 5 ns tf t 5 ns
CL (includes fixture and stray capacitance) V OUT + V COM R L ) R ON RL
Logic "1" = Switch On Logic input waveforms inverted for switches that have the opposite logic sense.
FIGURE 1. Switching Time
V+
Rgen + Vgen
V+ COM IN GND NC or NO VOUT CL = 1 nF
VOUT IN
DVOUT
On
Off Q = DVOUT x CL
On
VIN = 0 - V+ IN depends on switch configuration: input polarity determined by sense of switch.
FIGURE 2. Charge Injection
V+ 10 nF V+ NC or NO IN COM RL Analyzer 0 V, 2.4 V 0 V, 2.4 V IN 10 nF
V+
V+ COM Meter HP4192A Impedance Analyzer or Equivalent f = 1 MHz
NC or NO GND Off Isolation + 20 log V NO NC V COM GND
FIGURE 3. Off-Isolation
FIGURE 4. Channel Off/On Capacitance
Document Number: 72708 S-32617--Rev. A, 29-Dec-03
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