intersil ISL43840 DATA SHEET

®
ISL43840
Data Sheet September 2003
Low-Voltage, Single and Dual Supply, Dual 4 to 1 Multiplexer Analog Switch with Enable
The Intersil ISL43840 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 two
enable bar pins to simultaneously open all signal paths of bank A and B.
ON resistance of 39 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 .01nA at +25
2.5nA at +85
o
C.
o
C or
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 ISL43840 is a dual 4 to 1 multiplexer device. Table 1 summarizes the performance of this part.
TABLE 1. FEATURES AT A GLANCE
CONFIGURATION DUAL 4:1 MUX
±5V R
ON
±5V t
/ t
ON
OFF
12V R
ON
12V tON / t 5V R 5V t
3.3V R
3.3V t Package 20 Ld 4x4 QFN
ON
ON
ON
/ t
ON
OFF
/ t
OFF
OFF
39 32ns/18ns 32 23ns/15ns 65 38ns/19ns 125 70ns/32ns
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.”
FN6056
Features
• Fully Specified at 3.3V, 5V, ±5V, and 12V Supplies for 10% Tolerances
• ON Resistance (R
• ON Resistance (R
•R
Matching Between Channels, VS = ±5V . . . . . . . . <2
ON
• Low Charge Injection, V
) Max, VS = ±4.5V. . . . . . . . . . . 50
ON
) Max, VS = +3V . . . . . . . . . . . 155
ON
= ±5V . . . . . . . . . . . . . 1pC (Max)
S
• Single Supply Operation. . . . . . . . . . . . . . . . . . . +2V to +12V
• Dual Supply Operation . . . . . . . . . . . . . . . . . . . . . ±2V to ±6V
• Fast Switching Action (V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38ns
-t
ON
-t
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19ns
OFF
= +5V)
S
• Guaranteed Max Off-leakage. . . . . . . . . . . . . . . . . . . .2.5nA
• Guaranteed Break-Before-Make
• TTL, CMOS Compatible
Applications
• 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
• 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
Pinout
COMB
NO3B
NO2B
ENABLE A
ENABLE B
ISL43840
ISL43840 (QFN)
TOP VIEW
NO1B
NO0B
20 19 18 17 16
1
2
3
4
LOGIC LOGIC
5
789106
-V GND
N.C.
ADD2B
+V
NO1A
NO2A
15
COMA
14
NO0A
13
NO3A
12
ADD1A
11
ADD1B
ADD2A
Truth Table (Note)
ISL43840
ENABLE
ADD2 ADD1 SWITCH ON
1XX NONE 000 NO0 001 NO1 010 NO2 011 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.
GND Ground Connection
ENABLE
COM Analog Switch Common Pin
NO Analog Switch Normally Open Pin
ADD Address Input Pin
N.C. No Internal Connection
Digital Control Input. Connect to GND for Normal Operation. Connect to V+ to turn all switches off.
NC Analog Switch Normally Closed Pin
Ordering Information
PART NO.
(BRAND)
ISL43840IR (43840IR)
TEMP.
RANGE (
o
C) PACKAGE PKG. NO.
-40 to 85 20 Ld QFN L20.4x4
2
ISL43840
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
EN
, NO, ADD (Note 1) . . . . . . . . . . . . . . . . . -0.3 to ((V+) + 0.3V)
Output Voltages
COM (Note 1) . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to ((V+) + 0.3V)
Thermal Resistance (Typical, Note 2) θ
20 Ld 4x4 QFN Package . . . . . . . . . . . . . . . . . . . . . 45
Maximum Junction Temperature (Plastic Package) . . . . . . . 150
Maximum Storage Temperature Range. . . . . . . . . . . . -65
Maximum Lead Temperature (Soldering 10s). . . . . . . . . . . . 300
(Lead Tips Only)
Continuous Current (Any Terminal). . . . . . . . . . . . . . . . . . . . ±30mA
Peak Current NO, NC, or COM
(Pulsed 1ms, 10% Duty Cycle, Max) . . . . . . . . . . . . . . . . ±100mA
Operating Conditions
Temperature Range
ISL43840IR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40
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 EN is measured with the component mounted on a low effective thermal conductivity test board in free air. See Tech Brief TB379 for details.
2. θ
JA
exceeding V+ or V- are clamped by internal diodes. Limit forward diode current to maximum current ratings.
o
C to 85oC
(oC/W)
JA
o
C to 150oC
o
o
C
C
Electrical Specifications: ±5V Supply Test Conditions: V
Unless Otherwise Specified
PARAMETER TEST CONDITIONS
ANALOG SWITCH CHARACTERISTICS
Analog Signal Range, V ON Resistance, R
R
Matching Between Channels,
ON
R
ON
R
Flatness, R
ON
NO or NC OFF Leakage Current, I
NO(OFF)
or I
NC(OFF)
COM OFF Leakage Current, I
COM(OFF)
COM ON Leakage Current, I
COM(ON)
DIGITAL INPUT CHARACTERISTICS
Input Voltage High, V Input Voltage Low, V Input Current, I
I
ADDL
ENH
DYNAMIC CHARACTERISTICS
Enable Turn-ON Time, t
Enable Turn-OFF Time, t
ON
FLAT(ON)
ENH
ENL
, I
ENL
ANALOG
, V
ADDH
, V
ADDL
, I
ADDH
ON
OFF
VS = ±4.5V, I
VS = ±4.5V, I
VS = ±4.5V, I
VS = ±5.5V, V
VS = ±5.5V, V
VS = ±5.5V, V
,
VS = ±5.5V, V
= 2mA, VNO = 3V, (See Figure 5) 25 - 44 50
COM
= 2mA, VNO = 3V, (Note 5) 25 - 1.3 4
COM
= 2mA, VNO = ±3V, 0V, (Note 6) 25 - 7.5 9
COM
= ±4.5V, VNO = +4.5V, (Note 7) 25 -0.1 0.002 0.1 nA
COM
= ±4.5V, VNO = +4.5V, (Note 7) 25 -0.1 0.002 0.1 nA
COM
= VNO = ±4.5V, (Note 7) 25 -0.1 0.002 0.1 nA
COM
, V
ENH
= 0V or V+ Full -0.5 0.03 0.5 µA
ADD
VS = ±4.5V, VNO = ±3V, RL = 300Ω, CL = 35pF, V
= 0 to 3, (See Figure 1)
IN
VS = ±4.5V, VNO = ±3V, RL = 300Ω, CL = 35pF, V
= 0 to 3, (See Figure 1)
IN
= ±4.5V to ±5.5V, GND = 0V, V
SUPPLY
TEMP
o
(
C)
INH
(NOTE 4)
MIN TYP
= 2.4V, V
= 0.8V (Note 3),
INL
(NOTE 4)
MAX UNITS
Full V- - V+ V
Full - - 80
Full - - 6
Full - - 12
Full -2.5 - 2.5 nA
Full -2.5 - 2.5 nA
Full -2.5 - 2.5 nA
Full 2.4 - - V Full - - 0.8 V
25 - 35 50 ns
Full - - 60 ns
25 - 22 35 ns
Full - - 40 ns
3
ISL43840
Electrical Specifications: ±5V Supply Test Conditions: V
= ±4.5V to ±5.5V, GND = 0V, V
SUPPLY
= 2.4V, V
INH
= 0.8V (Note 3),
INL
Unless Otherwise Specified (Continued)
PARAMETER TEST CONDITIONS
Address Transition Time, t
Break-Before-Make Time, t
TRANSVS
BBM
V
VS = ±5.5V, VNO = 3V, RL = 300Ω, CL = 35pF, V
= ±4.5V, VNO = ±3V, RL = 300Ω, CL = 35pF,
= 0 to 3, (See Figure 1)
IN
= 0 to 3V, (See Figure 3)
IN
TEMP
(NOTE 4)
o
(
C)
MIN TYP
(NOTE 4)
MAX UNITS
25 - 43 60 ns Full - - 70 ns Full 2 7 - ns
Charge Injection, Q CL = 1.0nF, VG = 0V, RG = 0, (See Figure 2 25 - 0.3 1 pC NO/NC OFF Capacitance, C COM OFF Capacitance, C COM ON Capacitance, C
OFF
OFF
COM(ON)
OFF Isolation R Crosstalk, (Note 8) 25 - 110 - dB
f = 1MHz, VNO = V f = 1MHz, VNO = V f = 1MHz, VNO = V
= 50Ω, CL = 15pF, f = 100kHz, VNO = 1V
L
= 0V, (See Figure 7) 25 - 3 - pF
COM
= 0V, (See Figure 7) 25 - 12 - pF
COM
= 0V, (See Figure 7) 25 - 18 - pF
COM
(See Figures 4 and 6)
RMS
,
25 - 92 - dB
All Hostile Crosstalk, (Note 8) 25 - -105 - dB
POWER SUPPLY CHARACTERISTICS
Power Supply Range Full ±2-±6V Positive Supply Current, I+ V
= ±5.5V, V
S
ENH
, V
= 0V or V+, Switch On or Off 25 -1 0.1 1 µA
ADD
Full -1 - 1 µA
Negative Supply Current, I- 25 -1 0.1 1 µA
Full -1 - 1 µA
NOTES:
3. V
= logic voltage to configure the device in a given state.
IN
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. ∆R
= RON (MAX) - RON (MIN).
ON
6. Flatness is defined as the difference between maximum and minimum value of on-resistance over the specified analog signal range.
o
7. Leakage parameter is 100% tested at high temp, and guaranteed by correlation at 25
C.
8. Between any two switches.
Electrical Specifications +12V Supply Test Conditions: V+ = +10.8V to +13.2V, GND = 0V, V
Unless Otherwise Specified
PARAMETER TEST CONDITIONS
ANALOG SWITCH CHARACTERISTICS
Analog Signal Range, V ON Resistance, R
R
Matching Between Channels,
ON
R
ON
R
Flatness, R
ON
NO or NC OFF Leakage Current, I
NO(OFF)
or I
NC(OFF)
ON
FLAT(ON)
ANALOG
V+ = 10.8V, I
V+ = 10.8V, I
V+ = 10.8V, I
V+ = 13.2V, V (Note 7)
4
TEMP
= 1.0mA, VNO = 9V, (See Figure 5) 25 - 37 45
COM
= 1.0mA, VNO = 9V, (Note 5) 25 - 1.2 2
COM
= 1.0mA, VNO = 3V, 6V, 9V, (Note 6) 25 - 5 7
COM
= 1V, 12V, VNO = 12V, 1V,
COM
(NOTE 4)
o
(
C)
MIN TYP
Full 0 - V+ V
Full - 55
Full - - 2
Full - - 7
25 -0.1 0.002 0.1 nA Full -2.5 - 2.5 nA
INH
= 4V, V
= 0.8V (Note 3),
INL
(NOTE 4)
MAX UNITS
ISL43840
Electrical Specifications +12V Supply Test Conditions: V+ = +10.8V to +13.2V, GND = 0V, V
Unless Otherwise Specified (Continued)
PARAMETER TEST CONDITIONS
COM OFF Leakage Current, I
COM(OFF)
COM ON Leakage Current, I
COM(ON)
DIGITAL INPUT CHARACTERISTICS
Input Voltage High, V Input Voltage Low, V Input Current, I
I
ADDL
ENH
, I
ENH
ENL
ENL
, V
, V
, I
ADDH
ADDL
ADDH
,
DYNAMIC CHARACTERISTICS
Enable Turn-ON Time, t
Enable Turn-OFF Time, t
Address Transition Time, t
ON
OFF
TRANS
V+ = 13.2V, V (Note 7)
V+ = 13.2V, V floating, (Note 7)
V+ = 13.2V, V
= 12V, 1V, VNO = 1V, 12V,
COM
= 1V, 12V, VNO = 1V, 12V, or
COM
, V
ENH
= 0V or V+ Full -0.5 0.03 0.5 µA
ADD
V+ = 10.8V, VNO = 10V, RL = 300Ω, CL = 35pF, V
= 0 to 4, (See Figure 1)
IN
V+ = 10.8V, VNO = 10V, RL = 300Ω, CL = 35pF, V
= 0 to 4, (See Figure 1)
IN
V+ = 10.8V, VNO = 10V, RL = 300Ω, CL = 35pF, V
= 0 to 4, (See Figure 1)
IN
TEMP
(NOTE 4)
o
(
C)
MIN TYP
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
Full 3.7 3.3 - V Full - 2.7 0.8 V
25 - 24 40 ns Full - 45 ns
25 - 15 30 ns Full - 35 ns
25 - 27 50 ns Full - 55 ns
INH
= 4V, V
= 0.8V (Note 3),
INL
(NOTE 4)
MAX UNITS
Break-Before-Make Time Delay, t
Charge Injection, Q C OFF Isolation R Crosstalk, (Note 8) 25 - 110 - dB
V+ = 13.2V, RL = 300Ω, CL = 35pF, VNO = 10V,
D
V
= 0 to 4, (See Figure 3)
IN
= 1.0nF, VG = 0V, RG = 0, (See Figure 2) 25 - 2.7 5 pC
L
= 50Ω, CL = 15pF, f = 100kHz,
L
V
NO
= 1V
, (See Figures 4 and 6)
RMS
Full 2 5 ns
25 - 92 - dB
All Hostile Crosstalk, (Note 8) 25 - -105 - dB NO or NC OFF Capacitance, C COM OFF Capacitance,
C
COM(OFF)
COM ON Capacitance, C
COM(ON)
f = 1MHz, VNO = V
OFF
f = 1MHz, VNO = V
f = 1MHz, VNO = V
= 0V, (See Figure 7) 25 - 3 - pF
COM
= 0V, (See Figure 7) 25 - 12 - pF
COM
= 0V, (See Figure 7) 25 - 18 - pF
COM
POWER SUPPLY CHARACTERISTICS
Power Supply Range Full 2 - 12 V Positive Supply Current, I+ V+ = 13.2V, V Positive Supply Current, I- Full -1 - 1 µA
or Off
ENH
, V
= 0V or V+, all channels On
ADD
Full -1 - 1 µA
5
ISL43840
Electrical Specifications: 5V Supply Test Conditions: V+ = +4.5V to +5.5V, V- = GND = 0V, V
= 2.4V, V
INH
= 0.8V (Note 3),
INL
Unless Otherwise Specified
PARAMETER TEST CONDITIONS
TEMP
o
(
C)
MIN
(NOTE 4) TYP
MAX
(NOTE 4)UNITS
ANALOG SWITCH CHARACTERISTICS
Analog Signal Range, V ON Resistance, R
R
Matching Between Channels,
ON
R
ON
R
Flatness, R
ON
ON
FLAT(ON)
ANALOG
V+ = 4.5V, I
COM
(See Figure 5)
V+ = 4.5V, I
V+ = 4.5V, I
COM
COM
= 1.0mA, VNO = 3.5V,
= 1.0mA, VNO = 3V, (Note 5) 25 - 2.2 4
= 1.0mA, VNO = 1V, 2V, 3V, (Note 6) 25 - 11.5 17
Full 0 - V+ V
25 - 81 90 Full - - 120
Full - - 6
Full - - 24
NO or NC OFF Leakage Current, I
NO(OFF)
or I
NC(OFF)
COM OFF Leakage Current, I
COM(OFF)
COM ON Leakage Current, I
COM(ON)
V+ = 5.5V, V
V+ = 5.5V, V
V+ = 5.5V, V
= 1V, 4.5V, VNO = 4.5V, 1V, (Note 7) 25 -0.1 0.002 0.1 nA
COM
Full -2.5 - 2.5 nA
= 1V, 4.5V, VNO = 4.5V, 1V, (Note 7) 25 -0.1 0.002 0.1 nA
COM
Full -2.5 - 2.5 nA
= VNO = 4.5V, (Note 7) 25 -0.1 0.002 0.1 nA
COM
Full -2.5 - 2.5 nA
DIGITAL INPUT CHARACTERISTICS
Input Voltage High, V Input Voltage Low, V Input Current, I
I
ADDL
ENH
, I
ENH
ENL
ENL
, V
, V
, I
ADDH
ADDL
ADDH
,
V+ = 5.5V, V
ENH
Full 2.4 - - V Full - - 0.8 V
, V
= 0V or V+ Full -0.5 0.03 0.5 µA
ADD
DYNAMIC CHARACTERISTICS
Enable Turn-ON Time, t
Enable Turn-OFF Time, t
Address Transition Time, t
Break-Before-Make Time, t
ON
OFF
TRANS
BBM
Charge Injection, Q C OFF Isolation R Crosstalk, (Note 8) 25 - 110 - dB
V+ = 4.5V, VNO = 3V, RL = 300Ω, CL = 35pF, V
= 0 to 3V, (See Figure 1)
IN
V+ = 4.5V, VNO = 3V, RL = 300Ω, CL = 35pF, V
= 0 to 3V, (See Figure 1)
IN
V+ = 4.5V, VNO = 3V, RL = 300Ω, CL = 35pF, V
= 0 to 3V, (See Figure 1)
IN
V+ = 5.5V, VNO = 3V, RL = 300Ω, CL = 35pF, V
= 0 to 3V, (See Figure 3)
IN
= 1.0nF, VG = 0V, RG = 0Ω, (See Figure 2) 25 - 0.6 1.5 pC
L
= 50Ω, CL = 15pF, f = 100kHz,
L
V
NO
= 1V
, (See Figures 4 and 6)
RMS
25 - 43 60 ns Full - - 70 ns
25 - 20 35 ns Full - - 40 ns
25 - 51 70 ns Full - - 85 ns Full 2 9 - ns
25 - 92 - dB
All Hostile Crosstalk, (Note 8) 25 - -105 - dB
POWER SUPPLY CHARACTERISTICS
Power Supply Range Full 2 - 12 V Positive Supply Current, I+ V+ = 5.5V, V- = 0V, V
Switch On or Off
ENH
, V
ADD
= 0V or V+,
25 -1 -0.1 1 µA Full -1 - 1 µA
Positive Supply Current, I- 25 -1 -0.1 1 µA
Full -1 - 1 µA
6
ISL43840
Electrical Specifications: 3.3V Supply Test Conditions: V+ = +3.0V to +3.6V, V- = GND = 0V, V
= 2.4V, V
INH
= 0.8V (Note 3),
INL
Unless Otherwise Specified
PARAMETER TEST CONDITIONS
TEMP
o
(
C)
MIN
(NOTE 4) TYP
MAX
(NOTE 4)UNITS
ANALOG SWITCH CHARACTERISTICS
Analog Signal Range, V ON Resistance, R
R
Matching Between Channels,
ON
R
ON
R
Flatness, R
ON
ON
FLAT(ON)
ANALOG
V+ = 3.0V, I
COM
(See Figure 5)
V+ = 3.0V, I
V+ = 3.0V, I
COM
COM
= 1.0mA, VNO = 1.5V,
= 1.0mA, VNO = 1.5V, (Note 5) 25 - 3.4 8
= 1.0mA, VNO = 0.5V, 1V, 2V, (Note 6) 25 - 34 40
Full 0 - V+ V
25 - 135 155 Full - - 200
Full - - 10
Full - - 50
NO or NC OFF Leakage Current, I
NO(OFF)
or I
NC(OFF)
COM OFF Leakage Current, I
COM(OFF)
COM ON Leakage Current, I
COM(ON)
V+ = 3.6V, V (Note 7)
V+ = 3.6V, V (Note 7)
V+ = 3.6V, V
= 0V, 4.5V, VNO = 3V, 1V,
COM
25 -0.1 0.002 0.1 nA Full -2.5 - 2.5 nA
= 0V, 4.5V, VNO = 3V, 1V,
COM
25 -0.1 0.002 0.1 nA Full -2.5 - 2.5 nA
= VNO = 3V, (Note 7) 25 -0.1 0.002 0.1 nA
COM
Full -2.5 - 2.5 nA
DIGITAL INPUT CHARACTERISTICS
Input Voltage High, V Input Voltage Low, V Input Current, I
I
ADDL
ENH
, I
ENH
ENL
ENL
, V
, V
, I
ADDH
ADDL
ADDH
,
V+ = 3.6V, V
ENH
Full 2.4 - - V Full - - 0.8 V
, V
= 0V or V+ Full -0.5 0.03 0.5 µA
ADD
DYNAMIC CHARACTERISTICS
Enable Turn-ON Time, t
Enable Turn-OFF Time, t
Address Transition Time, t
Break-Before-Make Time, t
ON
OFF
TRANS
BBM
Charge Injection, Q C OFF Isolation R Crosstalk, (Note 8) 25 - 110 - dB
V+ = 3.0V, VNO = 1.5V, RL = 300Ω, CL = 35pF, V
= 0 to 3V, (See Figure 1)
IN
V+ = 3.0V, VNO = 1.5V, RL = 300Ω, CL = 35pF, V
= 0 to 3V, (See Figure 1)
IN
V+ = 3.0V, VNO = 1.5V, RL = 300Ω, CL = 35pF, V
= 0 to 3V, (See Figure 1)
IN
V+ = 3.6V, VNO = 1.5V, RL = 300Ω, CL = 35pF, V
= 0 to 3V, (See Figure 3)
IN
= 1.0nF, VG = 0V, RG = 0Ω, (See Figure 2) 25 - 0.3 1 pC
L
= 50Ω, CL = 15pF, f = 100kHz, VNO = 1V
L
(See Figures 4 and 6)
RMS
,
25 - 82 100 ns Full - - 120 ns
25 - 37 50 ns Full - - 60 ns
25 - 96 120 ns Full - - 145 ns Full 3 13 - ns
25 - 92 - dB
All Hostile Crosstalk, (Note 8) 25 - -105 - dB
POWER SUPPLY CHARACTERISTICS
Power Supply Range Full 2 - 12 V Positive Supply Current, I+ V+ = 3.6V, V- = 0V, V
Switch On or Off
ENH
, V
ADD
= 0V or V+,
25 -1 -0.1 1 µA Full -1 - 1 µA
Positive Supply Current, I- 25 -1 -0.1 1 µA
Full -1 - 1 µA
7
Test Circuits and Waveforms
ISL43840
tr < 20ns
< 20ns
t
f
90%
LOGIC INPUT
SWITCH
OUTPUT
VNO0
0V
3V
0V
t
OFF
50%
90%
t
ON
V
OUT
Logic input waveform is inverted for switches that have the opposite logic sense.
FIGURE 1A. ENABLE t
3V
LOGIC
INPUT
0V
VNO0
SWITCH
OUTPUT
VNO
0V
X
ON
t
TRANS
/ t
MEASUREMENT POINTS
OFF
50%
t
TRANS
V
OUT
10%
tr < 20ns t
< 20ns
f
90%
Logic input waveform is inverted for switches that have the opposite logic sense.
V+
C
V+
LOGIC
INPUT
NO0 NO1-NO3
ENABLE
GND
Repeat test for other switches. C capacitance.
V
OUT
V
(NO)
FIGURE 1B. ENABLE t
V+
NO0 NO3
NO1-NO2
GND
V-
LOGIC
INPUT
C
V+
C
ADD1, 2
Repeat test for other switches. C capacitance.
V
OUT
V
(NO)
V-
C
ADD1, 2
includes fixture and stray
L
------------------------------=
RLR
/ t
ON
C
ENABLE
includes fixture and stray
L
------------------------------=
RLR
C
COM
R
L
+
ON()
TEST CIRCUIT
OFF
V-
COM
R
L
+
ON()
C
V
OUT
RL
300
V
OUT
RL
300
C
L
35pF
C
L
35pF
FIGURE 1C. ADDRESS t
OUT
OFF
Q = ∆V
OUT
LOGIC
INPUT
SWITCH
OUTPUT
V
FIGURE 2A. Q MEASUREMENT POINTS
MEASUREMENT POINTS
TRANS
ON
x C
L
8
FIGURE 1. SWITCHING TIMES
3V
0V
V
OFF
OUT
FIGURE 2. CHARGE INJECTION
FIGURE 1D. ADDRESS t
R
G
NOX
0
ADDX
V
G
Repeat test for other switches.
FIGURE 2B. Q TEST CIRCUIT
V+
GND
TRANS
C
COMX
ENABLE
TEST CIRCUIT
V-
C
LOGIC
INPUT
C
1nF
V
OUT
L
Test Circuits and Waveforms (Continued)
ISL43840
LOGIC
INPUT
SWITCH
OUTPUT
V
OUT
FIGURE 3A. t
SIGNAL GENERATOR
ANALYZER
3V
0V
V-
C
COM
ENABLE
includes fixture and stray
L
C
V
OUT
R
L
300
TEST CIRCUIT
C
35pF
L
0V
t
BBM
MEASUREMENT POINTS
BBM
tr < 20ns
< 20ns
t
f
80%
V+
C
V+
LOGIC
INPUT
NO0-NO3
ADD1. 2
GND
Repeat test for other switches. C capacitance.
FIGURE 3B. t
BBM
FIGURE 3. BREAK-BEFORE-MAKE TIME
C
ADDX
ENABLE
V-
C
0V or V+
0V or V+
V
NX
RON = V1/1mA
1mA
C
ADDX
ENABLE
V-
C
0V or V+
V+
NOX
V
1
COMX
GND
V+
NOX
COMX
GND
R
L
FIGURE 4. OFF ISOLATION TEST CIRCUIT FIGURE 5. R
SIGNAL GENERATOR
ANALYZER
C
COM
NO
ENABLE
V-
A
B
0V or V+
R
L
NO
A
ADDX
COM
V+
B
GND
FIGURE 6. CROSSTALK TEST CIRCUIT
9
TEST CIRCUIT
ON
C
50
IMPEDANCE
ANALYZER
N.C.
NOX
COMX
V+
GND
C
ADDX
ENABLE
V-
0V or V+
C
FIGURE 7. CAPACITANCE TEST CIRCUIT
ISL43840
Detailed Description
The ISL43840 analog switch offers a precise switching capability from a bipolar supply with low on-resistance (39) and high speed operation (t
ON
=38ns, t
It has an enable bar pin to simultaneously open all signal paths.
The device is especially well suited for applications using
±5V supplies. With ±5V supplies the performance (R
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.
Supply Sequencing And Overvoltage Protection
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 8). 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.
Logic inputs can easily be protected by adding a 1k resistor in series with the input (see Figure 8). 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.
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 R diodes can be added in series with the supply pins to provide overvoltage protection for all pins (see Figure 8). 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
1k
±2V to ±6V or a single 2V to 12V
= 19ns) with dual 5V supplies.
OFF
switch, so two small signal
ON
OPTIONAL PROTECTION DIODE
V+
LOGIC
V
NO
V-
OPTIONAL PROTECTION DIODE
V
COM
ON
,
Power-Supply Considerations
The ISL43840 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 ISL43840 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 lo gic (thu s se tting the d igit al 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.
Logic-Level Thresholds
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 V
level is about 3.3V. This is still below
IH
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 V
greater than 4V.
OH
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
In 50 systems, signal response is reasonably flat even past 100MHz (see Figures 17 and 18). Figures 17 and 18 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 19 details the high Off Isolation and Crosstalk rejection provided by this family. At 10MHz, Off Isolation is about 55dB in 50 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.
FIGURE 8. INPUT OVERVOLTAGE PROTECTION
10
ISL43840
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-.
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
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,
switch can show leakage currents of the same or opposite polarity. There is no connection between the analog signal paths and GND.
they are reverse biased differently. Each is biased by either
Typical Performance Curves T
70 60 50 40 30 20
400
(Ω)
ON
R
300
200
100
85oC
25oC
-40oC
0
2
4681012357911
FIGURE 9. ON RESISTANCE vs SUPPLY VOLTAGE FIGURE 10. ON RESISTANCE vs SWITCH VOLTAGE
V- = -5V
V- = 0V
V+ (V)
= 25oC, Unless Otherwise Specified
A
V
= (V+) - 1V
COM
I
= 1mA
COM
85oC
25oC
-40oC
120 110
I
= 2mA
COM
100
90 80 70 60 50
90 80
70
(Ω)
60
ON
50
R
40 30 60
50 40 30 20
-5 -3 -1 1 3 5
85oC
25oC
-40oC
25oC
-40oC
-4 -2 0 2 4
85oC
V
COM
(V)
85oC
25oC
-40oC
VS = ±5V
VS = ±2V
VS = ±3V
225 200
175 150
125 100
75 160 140
(Ω)
120
ON
100
R
80
60
100
90
80
70
60
50
40
024
85oC
25oC
135
V+ = 5V
V
COM
85oC 25oC
-40oC
V- = 0V
(V)
85oC
25oC
-40oC
I
COM
V+ = 2.7V V- = 0V
V+ = 3.3V
V- = 0V
-40oC
= 1mA
60
55
50
45
40
(Ω)
ON
R
35
30
25
20
024681012
25oC
V
COM
V+ = 12V
V- = 0V
85oC
(V)
I
COM
-40oC
FIGURE 11. ON RESISTANCE vs SWITCH VOLTAGE FIGURE 12. ON RESISTANCE vs SWITCH VOLTAGE
11
= 1mA
ISL43840
Typical Performance Curves T
500 400
-40oC
300 200 100
(ns)
ON
t
25oC
25oC
85oC
-40oC
0
250 200
85oC
150 100
50
-40oC
0
24681012357911
25oC
V- = -5V
V- = 0V
V+ (V)
= 25oC, Unless Otherwise Specified (Continued)
A
V
COM
= (V+) - 1V
200
-40oC
150
100
(ns)
100
OFF
t
25oC
25oC
50
-40oC
0
80
85oC
60 40 20
-40oC
0
24681012
357911
85oC
25oC
V- = -5V
V- = 0V
V+ (V)
V
COM
= (V+) - 1V
FIGURE 13. ENABLE TURN - ON TIME vs SUPPLY VOLTAGE FIGURE 14. ENABLE TURN - OFF TIME vs SUPPLY VOLTAGE
300
250
200
(ns)
150
RANS
t
100
50
0
35791113
24681012
25oC
85oC
-40oC
V+ (V)
V
COM
= (V+) - 1V
V- = 0V
FIGURE 15. ADDRESS TRANS TIME vs SINGLE SUPPLY
VOLTAGE
250
200
150
(ns)
RANS
t
100
50
0
23456
25oC
85oC
-40oC
V± (V)
V
COM
= (V+) - 1V
FIGURE 16. ADDRESS TRANS TIME vs DUAL SUPPLY
VOLTAGE
VS = ±5V
3
GAIN
0
-3
NORMALIZED GAIN (dB)
PHASE
RL = 50
1 10 100 600
FREQUENCY (MHz)
VIN = 0.2V
P-P
to 5V
FIGURE 17. FREQUENCY RESPONSE FIGURE 18. FREQUENCY RESPONSE
12
P-P
0
45
90
135
180
VS = ±3V
3
GAIN
0
-3
NORMALIZED GAIN (dB)
PHASE
PHASE (DEGREES)
RL = 50
1 10 100 600
FREQUENCY (MHz)
VIN = 0.2V
P-P
to 4V
P-P
0
45
90
135
180
PHASE (DEGREES)
ISL43840
Typical Performance Curves T
-10 V+ = 3V to 12V or
-20
VS = ±2V to ±5V
RL = 50
-30
-40
-50
-60
-70
CROSSTALK (dB)
-80
-90
-100
-110 1k 100k 1M 100M 500M10k 10M
ISOLATION
ALL HOSTILE CROSSTALK
FREQUENCY (Hz)
A
CROSSTALK
FIGURE 19. CROSSTALK AND OFF ISOLATION
Die Characteristics
SUBSTRATE POTENTIAL (POWERED UP):
GND
= 25oC, Unless Otherwise Specified (Continued)
10
20
30
40
50
60
70
80
90
100 110
OFF ISOLATION (dB)
3
2
1
0
-1
Q (pC)
-2
-3
-4
-5 0 5 10 12
V+ = 3.3V
V- = 0V
-2.5 2.5 7.5
FIGURE 20. CHARGE INJECTION vs SWITCH VOLTAGE
VS = ±5V
V+ = 5V V- = 0V
V
COM
V+ = 12V
V- = 0V
(V)
TRANSISTOR COUNT:
193
PROCESS:
Si Gate CMOS
13
ISL43840
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
A 0.80 0.90 1.00 ­A1 - - 0.05 ­A2 - - 1.00 9 A3 0.20 REF 9
b 0.18 0.23 0.30 5, 8
D 4.00 BSC ­D1 3.75 BSC 9 D2 1.95 2.10 2.25 7, 8
E 4.00 BSC ­E1 3.75 BSC 9 E2 1.95 2.10 2.25 7, 8
e 0.50 BSC -
k0.25 - - -
L 0.35 0.60 0.75 8 L1 - - 0.15 10
N202 Nd 5 3 Ne 5 5 3
P- -0.609
θ --129
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.
NOTESMIN NOMINAL MAX
Rev. 1 10/02
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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 she ets are current before placin g orders. Information furn ished 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 othe rwise under any patent or patent rights of Intersil or its subsidia ries.
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14
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