INTERSIL ISL43841

ISL43841
®
Data Sheet
September 2003
FN6055
Low-Voltage, Single and Dual Supply,
Dual 4 to 1 Multiplexer Analog Switch with
Latch
Features
The Intersil ISL43841 device is a precision, bidirectional,
analog switches configured as a a dual 4 channel multiplexer/
demultiplexer designed to operate from a single +2V to +12V
supply or from a ±2V to ±6V supply. The device has a latch
bar pin to lock in the last switch address.
• ON Resistance (RON) Max, VS = ±4.5V. . . . . . . . . . . 50Ω
ON resistance of 39Ω with a ±5V supply and 125Ω with a
+3.3V supply. Each switch can handle rail to rail analog
signals. The off-leakage current is only 0.1nA at +25oC or
2.5nA at +85oC.
All digital inputs have 0.8V to 2.4V logic thresholds, ensuring
TTL/CMOS logic compatibility when using a single 3.3V or
+5V supply or dual ±5V supplies.
The ISL43841 is a dual 4 to 1 multiplexer device. Table 1
summarizes the performance of this part.
TABLE 1. FEATURES AT A GLANCE
CONFIGURATION
39Ω
±5V tON/tOFF
32ns/18ns
12V RON
32Ω
12V tON/tOFF
23ns/15ns
5V RON
65Ω
5V tON/tOFF
38ns/19ns
3.3V RON
125Ω
3.3V tON/tOFF
70ns/32ns
Package
20 Ld 4x4 QFN
• ON Resistance (RON) Max, VS = +3V . . . . . . . . . . . 155Ω
• RON Matching Between Channels, VS = ±5V . . . . . . . . <2Ω
• Low Charge Injection, VS = ±5V . . . . . . . . . . . . . 1pC (Max)
• Single Supply Operation. . . . . . . . . . . . . . . . . . . +2V to +12V
• Dual Supply Operation . . . . . . . . . . . . . . . . . . . . . ±2V to ±6V
• Fast Switching Action (VS = +5V)
- tON . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38ns
- tOFF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19ns
• Guaranteed Max Off-leakage . . . . . . . . . . . . . . . . . . . . 2.5nA
• Guaranteed Break-Before-Make
• TTL, CMOS Compatible
Applications
DUAL 4:1 MUX
±5V RON
• Fully Specified at 3.3V, 5V, ±5V, and 12V Supplies for
10% Tolerances
• Communications Systems
- Radios
- Telecom Infrastructure
- ADSL, VDSL Modems
• Test Equipment
- Medical Ultrasound
- Magnetic Resonance Image
- CT and PET Scanners (MRI)
- ATE
- Electrocardiograph
• Audio and Video Signal Routing
Related Literature
• Technical Brief TB363 “Guidelines for Handling and
Processing Moisture Sensitive Surface Mount Devices
(SMDs)”
• Application Note AN557 “Recommended Test Procedures
for Analog Switches”
• Application Note AN520 “CMOS Analog Multiplexers and
Switches; Specifications and Application Considerations.”
• Various Circuits
- +3V/+5V DACs and ADCs
- Sample and Hold Circuits
- Operational Amplifier Gain Switching Networks
- High Frequency Analog Switching
- High Speed Multiplexing
- Integrator Reset Circuits
• Application Note AN1034 “Analog Switch and Multiplexer
Applications”
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright © Intersil Americas Inc. 2003. All Rights Reserved
ISL43841
Pinout
NO1B
NO0B
N.C.
+V
NO1A
ISL43841 (QFN)
TOP VIEW
20
19
18
17
16
COMB
1
15 NO2A
NO3B
2
14 COMA
NO2B
3
13 NO0A
LATCH A
4
12 NO3A
LATCH B
5
8
GND
ADD2B
LATCH
ADD2
ADD1
SWITCH ON
0
X
X
Last Switch Selected
1
0
0
NO0
1
0
1
NO1
1
1
0
NO2
1
1
1
NO3
NOTE: Applies to either A or B switch. Logic “0” ≤0.8V. Logic “1”
≥2.4V, with V+ between 2.7V and 10V. X = Don’t Care.
Pin Descriptions
PIN
FUNCTION
V+
Positive Power Supply Input
V-
Negative Power Supply Input. Connect to GND for
Single Supply Configurations.
COM
10
Ordering Information
ISL43841
LATCH
9
11 ADD1A
ADD2A
7
ADD1B
6
Truth Table (Note)
GND
LOGIC
-V
LOGIC
Ground Connection
Digital Control Input. Connect to +V for Normal
Operation. Connect to GND to latch the last switch state.
Analog Switch Common Pin
NO
Analog Switch Normally Open Pin
NC
Analog Switch Normally Closed Pin
ADD
Address Input Pin
N.C.
No Internal Connection
2
PART NO.
(BRAND)
ISL43841IR
(43841IR)
TEMP.
RANGE (oC)
-40 to 85
PACKAGE
20 Ld QFN
PKG. NO.
L20.4x4
ISL43841
Absolute Maximum Ratings
Thermal Information
V+ to V- . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to15V
V+ to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to15V
V- to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -15 to 0.3V
Input Voltages
LATCH, NO, ADD (Note 1) . . . . . . . . . . . . . . -0.3 to ((V+) + 0.3V)
Output Voltages
COM (Note 1) . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to ((V+) + 0.3V)
Continuous Current (Any Terminal) . . . . . . . . . . . . . . . . . . . . ±30mA
Peak Current NO, NC, or COM
(Pulsed 1ms, 10% Duty Cycle, Max) . . . . . . . . . . . . . . . . ±100mA
Thermal Resistance (Typical, Note 2)
θJA (oC/W)
20 Ld 4x4 QFN Package . . . . . . . . . . . . . . . . . . . . .
45
Maximum Junction Temperature (Plastic Package) . . . . . . . 150oC
Maximum Storage Temperature Range. . . . . . . . . . . . -65oC to 150oC
Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . 300oC
(Lead Tips Only)
Operating Conditions
Temperature Range
ISL43841IR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40oC to 85oC
CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the
device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
NOTES:
1. Signals on NO, COM, ADD, or LATCH exceeding V+ or V- are clamped by internal diodes. Limit forward diode current to maximum current
ratings.
2. θJA is measured with the component mounted on a low effective thermal conductivity test board in free air. See Tech Brief TB379 for details.
Electrical Specifications: ±5V Supply
Test Conditions: VSUPPLY = ±4.5V to ±5.5V, GND = 0V, VINH = 2.4V, VINL = 0.8V (Note 3),
Unless Otherwise Specified
TEMP
(oC)
(NOTE 4)
MIN
TYP
Full
V-
-
V+
V
25
-
44
50
Ω
Full
-
-
80
Ω
25
-
1.3
4
Ω
Full
-
-
6
Ω
25
-
7.5
9
Ω
Full
-
-
12
Ω
25
-0.1
0.002
0.1
nA
Full
-2.5
-
2.5
nA
25
-0.1
0.002
0.1
nA
Full
-2.5
-
2.5
nA
25
-0.1
0.002
0.1
nA
Full
-2.5
-
2.5
nA
Input Voltage High, VLATCHH,
VADDH
Full
2.4
-
-
V
Input Voltage Low, VLATCHL,
VADDL
Full
-
-
0.8
V
VS = ±5.5V, VLATCHH, VADD = 0V or V+
Full
-0.5
0.03
0.5
µA
VS = ±4.5V, VNO = ±3V, RL = 300Ω, CL = 35pF,
VIN = 0 to 3, (See Figure 1)
25
-
43
60
ns
Full
-
-
70
ns
Full
2
7
-
ns
PARAMETER
TEST CONDITIONS
(NOTE 4)
MAX
UNITS
ANALOG SWITCH CHARACTERISTICS
Analog Signal Range, VANALOG
VS = ±4.5V, ICOM = 2mA, VNO = 3V,
(See Figure 6)
ON Resistance, RON
RON Matching Between Channels,
∆RON
VS = ±4.5V, ICOM = 2mA, VNO = 3V, (Note 5)
RON Flatness, RFLAT(ON)
VS = ±4.5V, ICOM = 2mA, VNO = ±3V, 0V,
(Note 6)
NO or NC OFF Leakage Current,
INO(OFF) or INC(OFF)
VS = ±5.5V, VCOM = ±4.5V, VNO = +4.5V, (Note 7)
COM OFF Leakage Current,
ICOM(OFF)
VS = ±5.5V, VCOM = ±4.5V, VNO = +4.5V, (Note 7)
COM ON Leakage Current,
ICOM(ON)
VS = ±5.5V, VCOM = VNO = ±4.5V, (Note 7)
DIGITAL INPUT CHARACTERISTICS
Input Current, LATCHH, LATCHL,
IADDH, IADDL
DYNAMIC CHARACTERISTICS
Address Transition Time, tTRANS
VS = ±5.5V, VNO = 3V, RL = 300Ω, CL = 35pF,
VIN = 0 to 3V, (See Figure 3)
Break-Before-Make Time, tBBM
3
ISL43841
Electrical Specifications: ±5V Supply
PARAMETER
Test Conditions: VSUPPLY = ±4.5V to ±5.5V, GND = 0V, VINH = 2.4V, VINL = 0.8V (Note 3),
Unless Otherwise Specified (Continued)
TEST CONDITIONS
Latch Setup Time, tS
(See Figure 4)
Latch Hold Time, tH
(See Figure 4)
Latch Pulse Width, tWPW
(See Figure 4)
TEMP
(oC)
(NOTE 4)
MIN
TYP
25
25
-
-
ns
Full
35
-
-
ns
25
0
-
-
ns
Full
0
-
-
ns
25
15
-
-
ns
Full
25
-
-
ns
(NOTE 4)
MAX
UNITS
Charge Injection, Q
CL = 1.0nF, VG = 0V, RG = 0Ω, (See Figure 2)
25
-
0.3
1
pC
NO/NC OFF Capacitance, COFF
f = 1MHz, VNO = VCOM = 0V, (See Figure 8)
25
-
3
-
pF
COM OFF Capacitance, COFF
f = 1MHz, VNO = VCOM = 0V, (See Figure 8)
25
-
12
-
pF
COM ON Capacitance, CCOM(ON)
f = 1MHz, VNO = VCOM = 0V, (See Figure 8)
25
-
18
-
pF
OFF Isolation
RL = 50Ω, CL = 15pF, f = 100kHz, VNO = 1VRMS,
(See Figures 5 and 7)
25
-
92
-
dB
25
-
≤110
-
dB
25
-
-105
-
dB
Full
±2
-
±6
V
25
-1
0.1
1
µA
Full
-1
-
1
µA
25
-1
0.1
1
µA
Full
-1
-
1
µA
Crosstalk, (Note 8)
All Hostile Crosstalk, (Note 8)
POWER SUPPLY CHARACTERISTICS
Power Supply Range
VS = ±5.5V, VLATCHH, VADD = 0V or V+,
Switch On or Off
Positive Supply Current, I+
Negative Supply Current, I-
NOTES:
3. VIN = logic voltage to configure the device in a given state.
4. The algebraic convention, whereby the most negative value is a minimum and the most positive a maximum, is used in this data sheet.
5. ∆RON = RON (MAX) - RON (MIN).
6. Flatness is defined as the difference between maximum and minimum value of on-resistance over the specified analog signal range.
7. Leakage parameter is 100% tested at high temp, and guaranteed by correlation at 25oC.
8. Between any two switches.
Electrical Specifications + 12V Supply
PARAMETER
Test Conditions: V+ = +10.8V to +13.2V, GND = 0V, VINH = 4V, VINL = 0.8V (Note 3),
Unless Otherwise Specified
TEST CONDITIONS
TEMP
(oC)
(NOTE 4)
MIN
TYP
Full
0
-
V+
V
25
-
37
45
Ω
Full
-
55
Ω
25
-
1.2
2
Ω
Full
-
-
2
Ω
25
-
5
7
Ω
Full
-
-
7
Ω
25
-0.1
0.002
0.1
nA
Full
-2.5
-
2.5
nA
(NOTE 4)
MAX
UNITS
ANALOG SWITCH CHARACTERISTICS
Analog Signal Range, VANALOG
V+ = 10.8V, ICOM = 1.0mA, VNO = 9V, (See Figure 6)
ON Resistance, RON
RON Matching Between Channels,
∆RON
V+ = 10.8V, ICOM = 1.0mA, VNO = 9V, (Note 5)
RON Flatness, RFLAT(ON)
V+ = 10.8V, ICOM = 1.0mA, VNO = 3V, 6V, 9V, (Note 6)
NO or NC OFF Leakage Current,
INO(OFF) or INC(OFF)
4
V+ = 13.2V, VCOM = 1V, 12V, VNO = 12V, 1V, (Note 7)
ISL43841
Electrical Specifications + 12V Supply
Test Conditions: V+ = +10.8V to +13.2V, GND = 0V, VINH = 4V, VINL = 0.8V (Note 3),
Unless Otherwise Specified (Continued)
TEST CONDITIONS
TEMP
(oC)
(NOTE 4)
MIN
TYP
COM OFF Leakage Current,
ICOM(OFF)
V+ = 13.2V, VCOM = 12V, 1V, VNO = 1V, 12V, (Note 7)
25
-0.1
0.002
0.1
nA
Full
-2.5
-
2.5
nA
COM ON Leakage Current,
ICOM(ON)
V+ = 13.2V, VCOM = 1V, 12V, VNO = 1V, 12V, or
floating, (Note 7)
25
-0.1
0.002
0.1
nA
Full
-2.5
-
2.5
nA
Input Voltage High, VLATCHH,
VADDH
Full
3.7
3.3
-
V
Input Voltage Low, VLATCHL,
VADDL
Full
-
2.7
0.8
V
V+ = 13.2V, VLATCHH, VADD = 0V or V+
Full
-0.5
0.03
0.5
µA
V+ = 10.8V, VNO = 10V, RL = 300Ω, CL = 35pF,
VIN = 0 to 4, (See Figure 1)
25
-
27
50
ns
Full
-
55
ns
PARAMETER
(NOTE 4)
MAX
UNITS
DIGITAL INPUT CHARACTERISTICS
Input Current, LATCHH, LATCHL,
IADDH, IADDL
DYNAMIC CHARACTERISTICS
Address Transition Time, tTRANS
Break-Before-Make Time Delay, tD
V+ = 13.2V, RL = 300Ω, CL = 35pF, VNO = 10V,
VIN = 0 to 4, (See Figure 3)
Full
2
5
-
ns
Latch Setup Time, tS
(See Figure 4)
25
25
-
-
ns
Full
35
-
-
ns
25
0
-
-
ns
Full
0
-
-
ns
25
15
-
-
ns
Full
25
-
-
ns
Latch Hold Time, tH
(See Figure 4)
Latch Pulse Width, tWPW
(See Figure 4)
Charge Injection, Q
CL = 1.0nF, VG = 0V, RG = 0Ω, (See Figure 2)
25
-
2.7
5
pC
OFF Isolation
RL = 50Ω, CL = 15pF, f = 100kHz, VNO = 1VRMS,
(See Figures 5 and 7)
25
-
92
-
dB
25
-
≤110
-
dB
All Hostile Crosstalk, (Note 8)
25
-
-105
-
dB
NO or NC OFF Capacitance, COFF f = 1MHz, VNO = VCOM = 0V, (See Figure 8)
25
-
3
-
pF
COM OFF Capacitance,
CCOM(OFF)
f = 1MHz, VNO = VCOM = 0V, (See Figure 8)
25
-
12
-
pF
COM ON Capacitance, CCOM(ON)
f = 1MHz, VNO = VCOM = 0V, (See Figure 8)
25
-
18
-
pF
Full
2
-
12
V
Full
-1
-
1
µA
Full
-1
-
1
µA
Crosstalk, (Note 8)
POWER SUPPLY CHARACTERISTICS
Power Supply Range
Positive Supply Current, I+
V+ = 13.2V, VLATCHH, VADD = 0V or V+,
all channels On or Off
Positive Supply Current, I-
5
ISL43841
Electrical Specifications: 5V Supply
Test Conditions: V+ = +4.5V to +5.5V, V- = GND = 0V, VINH = 2.4V, VINL = 0.8V (Note 3),
Unless Otherwise Specified
TEMP
(oC)
MIN
(NOTE 4)
TYP
Full
0
-
V+
V
25
-
81
90
Ω
Full
-
-
120
Ω
25
-
2.2
4
Ω
Full
-
-
6
Ω
25
-
11.5
17
Ω
Full
-
-
24
Ω
25
-0.1
0.002
0.1
nA
Full
-2.5
-
2.5
nA
25
-0.1
0.002
0.1
nA
Full
-2.5
-
2.5
nA
25
-0.1
0.002
0.1
nA
Full
-2.5
-
2.5
nA
Input Voltage High, VLATCHH,
VADDH
Full
2.4
-
-
V
Input Voltage Low, VLATCHL,
VADDL
Full
-
-
0.8
V
V+ = 5.5V, VLATCHH, VADD = 0V or V+
Full
-0.5
0.03
0.5
µA
V+ = 4.5V, VNO = 3V, RL = 300Ω, CL = 35pF,
VIN = 0 to 3V, (See Figure 1)
25
-
51
70
ns
Full
-
-
85
ns
PARAMETER
TEST CONDITIONS
MAX
(NOTE 4) UNITS
ANALOG SWITCH CHARACTERISTICS
Analog Signal Range, VANALOG
V+ = 4.5V, ICOM = 1.0mA, VNO = 3.5V, (See Figure 6)
ON Resistance, RON
RON Matching Between Channels,
∆RON
V+ = 4.5V, ICOM = 1.0mA, VNO = 3V, (Note 5)
RON Flatness, RFLAT(ON)
V+ = 4.5V, ICOM = 1.0mA, VNO = 1V, 2V, 3V, (Note 6)
NO or NC OFF Leakage Current,
INO(OFF) or INC(OFF)
V+ = 5.5V, VCOM = 1V, 4.5V, VNO = 4.5V, 1V, (Note 7)
COM OFF Leakage Current,
ICOM(OFF)
V+ = 5.5V, VCOM = 1V, 4.5V, VNO = 4.5V, 1V, (Note 7)
COM ON Leakage Current,
ICOM(ON)
V+ = 5.5V, VCOM = VNO = 4.5V, (Note 7)
DIGITAL INPUT CHARACTERISTICS
Input Current, LATCHH, LATCHL,
IADDH, IADDL
DYNAMIC CHARACTERISTICS
Address Transition Time, tTRANS
Break-Before-Make Time, tBBM
V+ = 5.5V, VNO = 3V, RL = 300Ω, CL = 35pF,
VIN = 0 to 3V, (See Figure 3)
Full
2
9
-
ns
Latch Setup Time, tS
(See Figure 4)
25
25
-
-
ns
Full
35
-
-
ns
25
0
-
-
ns
Full
0
-
-
ns
25
15
-
-
ns
Full
25
-
-
ns
(See Figure 4)
Latch Hold Time, tH
(See Figure 4)
Latch Pulse Width, tWPW
Charge Injection, Q
CL = 1.0nF, VG = 0V, RG = 0Ω, (See Figure 2)
25
-
0.6
1.5
pC
OFF Isolation
RL = 50Ω, CL = 15pF, f = 100kHz, VNO = 1VRMS,
(See Figures 5 and 7)
25
-
92
-
dB
25
-
≤110
-
dB
25
-
-105
-
dB
Crosstalk, (Note 8)
All Hostile Crosstalk, (Note 8)
6
ISL43841
Electrical Specifications: 5V Supply
Test Conditions: V+ = +4.5V to +5.5V, V- = GND = 0V, VINH = 2.4V, VINL = 0.8V (Note 3),
Unless Otherwise Specified (Continued)
PARAMETER
TEST CONDITIONS
TEMP
(oC)
MIN
(NOTE 4)
TYP
Full
2
-
12
V
25
-1
-0.1
1
µA
Full
-1
-
1
µA
25
-1
-0.1
1
µA
Full
-1
-
1
µA
MAX
(NOTE 4) UNITS
POWER SUPPLY CHARACTERISTICS
Power Supply Range
V+ = 5.5V, V- = 0V, VLATCHH, VADD = 0V or V+,
Switch On or Off
Positive Supply Current, I+
Positive Supply Current, I-
Electrical Specifications: 3.3V Supply
PARAMETER
Test Conditions: V+ = +3.0V to +3.6V, V- = GND = 0V, VINH = 2.4V, VINL = 0.8V (Note 3),
Unless Otherwise Specified
TEST CONDITIONS
TEMP
(oC)
MIN
(NOTE 4)
TYP
Full
0
-
V+
V
25
-
135
155
Ω
MAX
(NOTE 4) UNITS
ANALOG SWITCH CHARACTERISTICS
Analog Signal Range, VANALOG
ON Resistance, RON
V+ = 3.0V, ICOM = 1.0mA, VNO = 1.5V, (See Figure 6)
RON Matching Between Channels,
∆RON
V+ = 3.0V, ICOM = 1.0mA, VNO = 1.5V, (Note 5)
RON Flatness, RFLAT(ON)
V+ = 3.0V, ICOM = 1.0mA, VNO = 0.5V, 1V, 2V, (Note 6)
NO or NC OFF Leakage Current,
INO(OFF) or INC(OFF)
V+ = 3.6V, VCOM = 0V, 4.5V, VNO = 3V, 1V, (Note 7)
COM OFF Leakage Current,
ICOM(OFF)
V+ = 3.6V, VCOM = 0V, 4.5V, VNO = 3V, 1V, (Note 7)
COM ON Leakage Current,
ICOM(ON)
V+ = 3.6V, VCOM = VNO = 3V, (Note 7)
Full
-
-
200
Ω
25
-
3.4
8
Ω
Full
-
-
10
Ω
25
-
34
40
Ω
Full
-
-
50
Ω
25
-0.1
0.002
0.1
nA
Full
-2.5
-
2.5
nA
25
-0.1
0.002
0.1
nA
Full
-2.5
-
2.5
nA
25
-0.1
0.002
0.1
nA
Full
-2.5
-
2.5
nA
Input Voltage High, VLATCHH,
VADDH
Full
2.4
-
-
V
Input Voltage Low, VLATCHL,
VADDL
Full
-
-
0.8
V
V+ = 3.6V, VLATCHH, VADD = 0V or V+
Full
-0.5
0.03
0.5
µA
V+ = 3.0V, VNO = 1.5V, RL = 300Ω, CL = 35pF,
VIN = 0 to 3V, (See Figure 1)
25
-
96
120
ns
Full
-
-
145
ns
DIGITAL INPUT CHARACTERISTICS
Input Current, LATCHH, LATCHL,
IADDH, IADDL
DYNAMIC CHARACTERISTICS
Address Transition Time, tTRANS
Break-Before-Make Time, tBBM
V+ = 3.6V, VNO = 1.5V, RL = 300Ω, CL = 35pF,
VIN = 0 to 3V, (See Figure 3)
Full
3
13
-
ns
Latch Setup Time, tS
(See Figure 4)
25
50
-
-
ns
Full
60
-
-
ns
25
0
-
-
ns
Full
0
-
-
ns
(See Figure 4)
Latch Hold Time, tH
7
ISL43841
Electrical Specifications: 3.3V Supply
PARAMETER
Test Conditions: V+ = +3.0V to +3.6V, V- = GND = 0V, VINH = 2.4V, VINL = 0.8V (Note 3),
Unless Otherwise Specified (Continued)
TEST CONDITIONS
Latch Pulse Width, tWPW
(See Figure 4)
TEMP
(oC)
MIN
(NOTE 4)
TYP
25
30
-
-
ns
Full
40
-
-
ns
0.3
1
pC
MAX
(NOTE 4) UNITS
Charge Injection, Q
CL = 1.0nF, VG = 0V, RG = 0Ω, (See Figure 2)
25
-
OFF Isolation
RL = 50Ω, CL = 15pF, f = 100kHz, VNO = 1VRMS,
(See Figures 5 and 7)
25
-
92
-
dB
25
-
≤110
-
dB
25
-
-105
-
dB
Full
2
-
12
V
Crosstalk, (Note 8)
All Hostile Crosstalk, (Note 8)
POWER SUPPLY CHARACTERISTICS
Power Supply Range
V+ = 3.6V, V- = 0V, VLATCHH, VADD = 0V or V+,
Switch On or Off
Positive Supply Current, I+
Positive Supply Current, I-
25
-1
0.1
1
µA
Full
-1
-
1
µA
25
-1
0.1
1
µA
Full
-1
-
1
µA
Test Circuits and Waveforms
3V
LOGIC
INPUT
V+
tr < 20ns
tf < 20ns
50%
C
V-
C
C
0V
tTRANS
NO0 LATCH
V+
V-
VOUT
VNO0
NO3
C
COM
NO1, NO2
90%
ADD1, 2 GND
SWITCH
OUTPUT
VOUT
RL
300Ω
0V
LOGIC
INPUT
10%
VNOX
tTRANS
Logic input waveform is inverted for switches that have the opposite
logic sense.
Repeat test for other switches. CL includes fixture and stray
capacitance.
RL
V OUT = V
-----------------------------(NO) R + R
L
FIGURE 1A. ADDRESS tTRANS MEASUREMENT POINTS
FIGURE 1B. ADDRESS tTRANS TEST CIRCUIT
FIGURE 1. SWITCHING TIMES
8
( ON )
CL
35pF
ISL43841
Test Circuits and Waveforms (Continued)
V+
V-
C
C
3V
LOGIC
INPUT
OFF
OFF
ON
VOUT
LATCH
RG
0V
NO
COM
0Ω
SWITCH
OUTPUT
VOUT
∆VOUT
ADD1, 2
GND
VG
CL
1nF
LOGIC
INPUT
Q = ∆VOUT x CL
Repeat test for other switches.
FIGURE 2B. Q TEST CIRCUIT
FIGURE 2A. Q MEASUREMENT POINTS
FIGURE 2. CHARGE INJECTION
V+
tr < 20ns
tf < 20ns
3V
C
C
LOGIC
INPUT
VOUT
LATCH
COM
0V
CL
35pF
RL
300Ω
NO0-NO3
V+
ADD1, 2
80%
SWITCH
OUTPUT
VOUT
V-
C
LOGIC
INPUT
0V
tBBM
GND
Repeat test for other switches. CL includes fixture and stray
capacitance.
FIGURE 3B. tBBM TEST CIRCUIT
FIGURE 3A. tBBM MEASUREMENT POINTS
FIGURE 3. BREAK-BEFORE-MAKE TIME
tr < 20ns
tf < 20ns
tMPW
LOGIC
INPUT
LATCH
V+
3V
50%
50%
C
C
50%
0V
tH
ADD1, 2
tH
3V
50%
50%
LOGIC
INPUT
LATCH
0V
tON, tOFF
VNOX
SWITCH
OUTPUT
0V
VOUT
NO0
GND
COM
VOUT
RL
300Ω
LOGIC
INPUT
90%
Logic input waveform is inverted for switches that have the opposite
logic sense.
Repeat test for other switches. CL includes fixture and stray
capacitance.
RL
-----------------------------V OUT = V
(NO) R + R
L
FIGURE 4A. LATCH tS, tH, tMPW MEASUREMENT POINTS
( ON )
FIGURE 4B. LATCH tS, tH, tMPW TEST CIRCUIT
FIGURE 4. LATCH SETUP AND HOLD TIMES
9
V+
NO1-NO3
tS
LOGIC
INPUT
ADDX
V-
C
CL
35pF
ISL43841
Test Circuits and Waveforms (Continued)
V+
SIGNAL
GENERATOR
V+
V-
C
RON = V1/1mA
LATCH
V-
C
C
C
LATCH
NOX
NOX
VNX
1mA
0V or V+
ADDX
COMX
ANALYZER
0V or V+
V1
ADDX
COMX
GND
GND
RL
FIGURE 6. RON TEST CIRCUIT
FIGURE 5. OFF ISOLATION TEST CIRCUIT
V+
C
V-
C
LATCH
SIGNAL
GENERATOR
V+
50Ω
NOA
C
V-
C
LATCH
COMA
NOX
0V or V+
ADDX
0V or V+
NOB
ANALYZER
ADDX
IMPEDANCE
ANALYZER
COMB
N.C.
COMX
GND
GND
RL
FIGURE 7. CROSSTALK TEST CIRCUIT
FIGURE 8. CAPACITANCE TEST CIRCUIT
Detailed Description
Supply Sequencing And Overvoltage Protection
The ISL43841 analog switch offers a precise switching
capability from a bipolar ±2V to ±6V or a single 2V to 12V
supply with low on-resistance (39Ω) and high speed
operation (tON = 38ns, tOFF = 19ns) with dual 5V supplies.
With any CMOS device, proper power supply sequencing is
required to protect the device from excessive input currents
which might permanently damage the IC. All I/O pins contain
ESD protection diodes from the pin to V+ and to V+(see
Figure 9). To prevent forward biasing these diodes, V+ and
V- must be applied before any input signals, and input signal
voltages must remain between V+ and V-. If these conditions
cannot be guaranteed, then one of the following two
protection methods should be employed.
It has an latch bar pin to lock in the last switch address.
The device is especially well suited for applications using
±5V supplies. With ±5V supplies the performance (RON,
Leakage, Charge Injection, ect.) is best in class.
High frequency applications also benefit from the wide
bandwidth, and the very high off isolation and crosstalk
rejection.
10
Logic inputs can easily be protected by adding a 1kΩ
resistor in series with the input (see Figure 9). The resistor
limits the input current below the threshold that produces
permanent damage, and the sub-microamp input current
produces an insignificant voltage drop during normal
operation.
ISL43841
This method is not applicable for the signal path inputs.
Adding a series resistor to the switch input defeats the
purpose of using a low RON switch, so two small signal
diodes can be added in series with the supply pins to provide
overvoltage protection for all pins (see Figure 9). These
additional diodes limit the analog signal from 1V below V+ to
1V above V-. The low leakage current performance is
unaffected by this approach, but the switch resistance may
increase, especially at low supply voltages.
OPTIONAL
PROTECTION
RESISTOR
FOR LOGIC
INPUTS
1kΩ
OPTIONAL PROTECTION
DIODE
LOGIC
VCOM
VOPTIONAL PROTECTION
DIODE
FIGURE 9. INPUT OVERVOLTAGE PROTECTION
Power-Supply Considerations
The ISL43841 construction is typical of most CMOS analog
switches, in that they have three supply pins: V+, V-, and
GND. V+ and V- drive the internal CMOS switches and set
their analog voltage limits, so there are no connections
between the analog signal path and GND. Unlike switches
with a 13V maximum supply voltage, the ISL43841 15V
maximum supply voltage provides plenty of room for the
10% tolerance of 12V supplies (±6V or 12V single supply),
as well as room for overshoot and noise spikes.
This switch device performs equally well when operated with
bipolar or single voltage supplies.The minimum
recommended supply voltage is 2V or ±2V. It is important to
note that the input signal range, switching times, and onresistance degrade at lower supply voltages. Refer to the
electrical specification tables and Typical Performance
Curves for details.
V+ and GND power the internal logic (thus setting the digital
switching point) and level shifters. The level shifters convert
the logic levels to switched V+ and V- signals to drive the
analog switch gate terminals.
11
V+ and GND power the internal logic stages, so V- has no
affect on logic thresholds. This switch family is TTL
compatible (0.8V and 2.4V) over a V+ supply range of 2.7V
to 10V. At 12V the VIH level is about 3.3V. This is still below
the CMOS guaranteed high output minimum level of 4V, but
noise margin is reduced. For best results with a 12V supply,
use a logic family that provides a VOH greater than 4V.
The digital input stages draw supply current whenever the
digital input voltage is not at one of the supply rails. Driving
the digital input signals from GND to V+ with a fast transition
time minimizes power dissipation.
High-Frequency Performance
V+
VNO
Logic-Level Thresholds
In 50Ω systems, signal response is reasonably flat even past
100MHz (see Figures 16 and 17). Figures 16 and 17 also
illustrates that the frequency response is very consistent
over varying analog signal levels.
An OFF switch acts like a capacitor and passes higher
frequencies with less attenuation, resulting in signal feed
through from a switch’s input to its output. Off Isolation is the
resistance to this feed through, while Crosstalk indicates the
amount of feed through from one switch to another.
Figure 18 details the high Off Isolation and Crosstalk
rejection provided by this family. At 10MHz, Off Isolation is
about 55dB in 50Ω systems, decreasing approximately 20dB
per decade as frequency increases. Higher load
impedances decrease Off Isolation and Crosstalk rejection
due to the voltage divider action of the switch OFF
impedance and the load impedance.
Leakage Considerations
Reverse ESD protection diodes are internally connected
between each analog-signal pin and both V+ and V-. One
of these diodes conducts if any analog signal exceeds V+
or V-.
Virtually all the analog leakage current comes from the ESD
diodes to V+ or V-. Although the ESD diodes on a given
signal pin are identical and therefore fairly well balanced,
they are reverse biased differently. Each is biased by either
V+ or V- and the analog signal. This means their leakages
will vary as the signal varies. The difference in the two diode
leakages to the V+ and V- pins constitutes the analog-signalpath leakage current. All analog leakage current flows
between each pin and one of the supply terminals, not to the
other switch terminal. This is why both sides of a given
switch can show leakage currents of the same or opposite
polarity. There is no connection between the analog signal
paths and GND.
ISL43841
Typical Performance Curves TA = 25oC, Unless Otherwise Specified
70
VCOM = (V+) - 1V
ICOM = 1mA
V- = -5V
60
50
85oC
40
25oC
30
-40oC
RON (Ω)
RON (Ω)
20
400
V- = 0V
300
200
85oC
VS = ±2V
85oC
25oC
-40oC
VS = ±3V
85oC
25oC
-40oC
50
25oC
-40oC
VS = ±5V
85oC
25oC
30
-40oC
20
3
2
4
5
6
7
V+ (V)
8
9
10
11
-5
12
-4
-3
-1
-2
1
0
VCOM (V)
3
2
FIGURE 11. ON RESISTANCE vs SWITCH VOLTAGE
225
200
60
V+ = 12V
V- = 0V
ICOM = 1mA
55
5
4
FIGURE 10. ON RESISTANCE vs SUPPLY VOLTAGE
175
150
ICOM = 1mA
85oC
50
25oC
V+ = 2.7V
V- = 0V
-40oC
75
160
140
120
100
80
60
100
90
80
70
60
50
40
45
RON (Ω)
125
100
RON (Ω)
ICOM = 2mA
40
100
0
120
110
100
90
80
70
60
50
90
80
70
60
50
40
30
60
85oC
25oC
V+ = 3.3V
-40oC
V- = 0V
85oC
40
35
25oC
30
V+ = 5V
85oC
V- = 0V
25
25oC
-40oC
-40oC
1
0
3
2
VCOM (V)
20
0
5
4
4
6
8
12
FIGURE 13. ON RESISTANCE vs SWITCH VOLTAGE
250
VCOM = (V+) - 1V
VCOM = (V+) - 1V
V- = 0V
250
10
VCOM (V)
FIGURE 12. ON RESISTANCE vs SWITCH VOLTAGE
300
2
200
tRANS (ns)
tRANS (ns)
200
150
100
150
100
25oC
25oC
85oC
85oC
50
50
-40oC
-40oC
0
0
2
3
4
5
6
7
8
V+ (V)
9
10
11
12
FIGURE 14. ADDRESS TRANS TIME vs SINGLE SUPPLY
VOLTAGE
12
13
2
3
4
V± (V)
5
FIGURE 15. ADDRESS TRANS TIME vs DUAL SUPPLY
VOLTAGE
6
ISL43841
VIN = 0.2VP-P to 5VP-P
GAIN
0
-3
0
PHASE
45
90
135
180
VS = ±3V
GAIN
0
-3
0
PHASE
45
90
135
180
RL = 50Ω
1
VIN = 0.2VP-P to 4VP-P
3
RL = 50Ω
10
100
600
1
10
FREQUENCY (MHz)
100
600
FREQUENCY (MHz)
FIGURE 16. FREQUENCY RESPONSE
-10
FIGURE 17. FREQUENCY RESPONSE
3
10
V+ = 3V to 12V or
-20 VS = ±2V to ±5V
RL = 50Ω
-30
20
2
30
40
-50
50
-60
60
ISOLATION
-70
70
CROSSTALK
-80
80
-90
90
-100
100
V+ = 3.3V
V- = 0V
1
V+ = 12V
V- = 0V
0
Q (pC)
-40
OFF ISOLATION (dB)
CROSSTALK (dB)
PHASE (DEGREES)
NORMALIZED GAIN (dB)
VS = ±5V
3
PHASE (DEGREES)
NORMALIZED GAIN (dB)
Typical Performance Curves TA = 25oC, Unless Otherwise Specified (Continued)
V+ = 5V
V- = 0V
-1
VS = ±5V
-2
-3
ALL HOSTILE CROSSTALK
-110
1k
10k
100k
1M
10M
110
100M 500M
FREQUENCY (Hz)
FIGURE 18. CROSSTALK AND OFF ISOLATION
Die Characteristics
SUBSTRATE POTENTIAL (POWERED UP):
GND
TRANSISTOR COUNT:
193
PROCESS:
Si Gate CMOS
13
-4
-5
-2.5
0
2.5
5
7.5
10
VCOM (V)
FIGURE 19. CHARGE INJECTION vs SWITCH VOLTAGE
12
ISL43841
Quad Flat No-Lead Plastic Package (QFN)
Micro Lead Frame Plastic Package (MLFP)
L20.4x4
20 LEAD QUAD FLAT NO-LEAD PLASTIC PACKAGE
(COMPLIANT TO JEDEC MO-220VGGD-1 ISSUE C)
MILLIMETERS
SYMBOL
MIN
NOMINAL
MAX
NOTES
A
0.80
0.90
1.00
-
A1
-
-
0.05
-
A2
-
-
1.00
A3
b
0.18
D
0.23
9
0.30
5, 8
4.00 BSC
D1
D2
9
0.20 REF
-
3.75 BSC
1.95
2.10
9
2.25
7, 8
E
4.00 BSC
-
E1
3.75 BSC
9
E2
1.95
e
2.10
2.25
7, 8
0.50 BSC
-
k
0.25
-
-
-
L
0.35
0.60
0.75
8
L1
-
-
0.15
10
N
20
Nd
2
5
3
Ne
5
5
3
P
-
-
0.60
9
θ
-
-
12
9
Rev. 1 10/02
NOTES:
1. Dimensioning and tolerancing conform to ASME Y14.5-1994.
2. N is the number of terminals.
3. Nd and Ne refer to the number of terminals on each D and E.
4. All dimensions are in millimeters. Angles are in degrees.
5. Dimension b applies to the metallized terminal and is measured
between 0.15mm and 0.30mm from the terminal tip.
6. The configuration of the pin #1 identifier is optional, but must be
located within the zone indicated. The pin #1 identifier may be
either a mold or mark feature.
7. Dimensions D2 and E2 are for the exposed pads which provide
improved electrical and thermal performance.
8. Nominal dimensions are provided to assist with PCB Land Pattern
Design efforts, see Intersil Technical Brief TB389.
9. Features and dimensions A2, A3, D1, E1, P & θ are present when
Anvil singulation method is used and not present for saw
singulation.
10. Depending on the method of lead termination at the edge of the
package, a maximum 0.15mm pull back (L1) maybe present. L
minus L1 to be equal to or greater than 0.3mm.
All Intersil U.S. products are manufactured, assembled and tested utilizing ISO9000 quality systems.
Intersil Corporation’s quality certifications can be viewed at www.intersil.com/design/quality
Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without
notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and
reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result
from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries.
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14