ADVANCED
LINEAR
DEVICES, INC.
ALD2332A/ALD2332B/ALD2332
DUAL PRECISION CMOS VOLTAGE COMPARATOR
WITH PUSH-PULL DRIVER
GENERAL DESCRIPTION
APPLICATIONS
The ALD2332A/ALD2332B/ALD2332 is a monolithic high performance
dual precision voltage comparator built with advanced silicon gate
EPAD® CMOS technology intended for high precision analog applications. The ALD2332A/ALD2332B/ALD2332 offers ultra-low input offset
voltages and currents at its input pre-amplifier, precision voltage comparator and high-current output driver integrated on-chip, in one industry
standard pinout 8 Lead PDIP or SOIC package. Primary features include:
very high typical input impedance of 1012Ω; low input bias current of
10pA; fast response time of 520ns with only 10mV input step signal; very
low power dissipation of 175µA per comparator; single (+5V) or dual
(±5V) power supply operation; and 50mA push-pull output drivers.
• MOSFET driver
• High source impedance voltage comparison
circuits
• Multiple limit window comparator
• Power supply voltage monitor
• Photo-detector sensor circuit
• High speed LED driver
• Oscillators
• Battery operated instruments
• Remote signal detection
• Multiple relay drivers
The input voltage range includes ground, which makes these comparators ideal for single supply low level signal detection with high source
impedance. The outputs can source and sink current allowing for
application flexibility. They can be used in either wired-OR connection
without pull-up resistor or push-pull configuration. ALD2332A/ALD2332B/
ALD2332 can also be used in wired-OR connection with other open
drain circuits such as the ALD2331/ALD2303 voltage comparators.
BENEFITS
The ALD2332A/ALD2332B/ALD2332 voltage comparators are ideal for
a great variety of precision analog voltage comparator applications,
especially in low level signal detection circuits which require low standby
power and high output current.
• Simple precision reference voltage setting
• On-chip input pre-amplifier and output
buffers
• Precision voltage comparison without
pre-amplifier
• Eliminate need for second power supply
• Eliminate pull-up resistor
PIN CONFIGURATION
FEATURES
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Guaranteed to drive 200Ω loads
Fanout of 30LS TTL loads
Low supply current of 175µA each comparator
Pinout of LM193 type industry standard voltage comparators
Extremely low input bias currents -- typically 10pA
Virtually eliminates source impedance effects
Low operating supply voltage of 4V to 10V
Single (+5V) and dual supply (±5V) operation
High speed for both large and small signals -180ns for TTL inputs and 400ns for 20mV overdrive
CMOS, NMOS and TTL compatible
Push-pull outputs-current sourcing/ sinking
High output sinking current -- typically 50mA
Low supply current spikes
High gain -- 100V/mV
OUT 1
1
8
V+
-IN 1
2
7
OUT 2
+IN 1
3
6
-IN 2
GND
4
5
+IN 2
SAL, PAL PACKAGES
BLOCK DIAGRAM
(8) V+
ORDERING INFORMATION (“L” suffix for lead free version)
Operating Temperature Range *
0°C to +70°C
0°C to +70°C
8-Pin Small Outline
Package (SOIC)
ALD2332ASAL
ALD2332BSAL
ALD2332SAL
8-PinPlastic
Dip Package
ALD2332APAL
ALD2332BPAL
ALD2332PAL
INVERTING INPUT
-IN 1 (2)
(1) OUT 1
NONINVERTING INPUT
+IN 1 (3)
V+
INVERTING INPUT
-IN 2 (6)
(7) OUT 2
NONINVERTING INPUT
+IN 2 (5)
(4) GND
* Contact factory for leaded (non-RoHS) or high temperature versions.
Rev 2.0 ©2010 Advanced Linear Devices, Inc. 415 Tasman Drive, Sunnyvale, CA 94089-1706 Tel: (408) 747-1155 Fax: (408) 747-1286
www.aldinc.com
ABSOLUTE MAXIMUM RATINGS
Supply voltage, V+
Differential input voltage range
Power dissipation
Operating temperature range PAL, SAL packages
Storage temperature range
Lead temperature, 10 seconds
+10.6V
-0.3V to V+ +0.3V
600 mW
0°C to +70°C
-65°C to +150°C
+260°C
OPERATING ELECTRICAL CHARACTERISTICS
TA = 25°C V+ = +5V unless otherwise specified
2332A
Parameter
Symbol
Supply
Voltage
VS
V+
Supply
Current
IS
Min
Typ
±2
4
350
50
2332B
Max
Min
±5
10
±2
4
500
150
Typ
±5
10
350
50
2332
Max
Min
±2
4
500
350
AVD
Input Offset Voltage
VOS
0.02
0.5
0.5
1.0
1.0
Input Offset Current1
IOS
0.01
20
0.01
20
Input Bias Current1
IB
0.01
20
0.01
20
V+ -1.5
50
V+ -1.5
500
150
Unit
Test Conditions
V
V
Dual Supply
Single Supply
µA
No Load
Two Comparators
V/mV
RLOAD ≥ 15K
2.0
mV
RLOAD ≥ 1.5KΩ
0.01
20
pA
0.01
20
pA
V+ -1.5
V
0.4
V
Common Mode Input
2
Voltage Range
VICR
Low Level Sink
Output Voltage
VOL
Low Level Sink
Output Current
IOL
24
50
24
50
24
50
mA
High Level Source
Output Voltage
VOH
3.5
4.5
3.5
4.5
3.5
4.5
V
ISOURCE = -2mA
SOURCE OUTPUT ON
Response Time
2
0.15
-0.3
Max
±5
10
Voltage Gain
-0.3
150
Typ
0.4
0.15
-0.3
0.4
0.15
ISINK = 12mA
VINPUT = 1V Differential
VOL = 1.0 V
SINK OUTPUT ON
tRP
1.1
1.1
1.1
µs
RL = 5.1KΩ, CL = 15pF
5mV Input Step/
0mV Overdrive
tRP
2.4
2.4
2.4
µs
RL = 5.1KΩ ,CL =15pF
1mVInput Step/
0mV Overdrive
tRP
400
400
400
ns
RL = 5.1KΩ, CL = 15pF
100mV Input Step/
20mV Overdrive
tRP
180
180
180
ns
RL = 5.1KΩ ,CL =15pF
TTL-Level Input Step
Common Mode
Rejection Ratio
CMRR
80
80
80
dB
VINPUT = 0V to 2.5V
Power Supply
Rejection Ratio
PSRR
75
75
75
dB
V+ = 4V to 5V
Notes:
1
2
Consists of junction leakage currents
Sample test parameter
ALD2332A/ALD2332B/ALD2332
Advanced Linear Devices
2 of 11
TYPICAL PERFORMANCE CHARACTERISTICS
COMMON - MODE VOLTAGE REFERRED
TO SUPPLY VOLTAGE
COMMON - MODE VOLTAGE LIMITS (V)
TRANSFER FUNCTION
OUTPUT VOLTAGE (V)
+5.0
TA = 25°C
0.0
-5.0
-2.5
0.5
V+
VS = ± 2.5 V
-0.5
-1.0
≈
V-0.5
-55
+2.5
0.0
≈
0.5
-25
0
25
50
75
100
125
TEMPERATURE (°C)
DIFFERENTIAL INPUT VOLTAGE (mV)
TOTAL SUPPLY CURRENT vs.
TOTAL SUPPLY VOLTAGE
SUPPLY CURRENT vs. TEMPERATURE
550
500
VS = ±2.5V
No Load
All comparators
500
TA = 25°C
RL = ∞
+
SUPPLY CURRENT (µA)
SUPPLY CURRENT ( µA)
V+
400
300
200
100
450
400
350
300
250
200
2.0
6.0
4.0
12.0
10.0
8.0
0
-25
25
50
100
75
NORMALIZED INPUT OFFSET VOLTAGE
vs. TEMPERATURE
OUTPUT HIGH VOLTAGE
vs. SUPPLY VOLTAGE
VCM = 0V
VS = ±2.5V
+2
+1
0
-1
-2
-3
-55
-25
0
25
50
75
100
OUTPUT HIGH VOLTAGE FROM V+ (V)
TEMPERATURE (°C)
+3
NORMALIZED INPUT OFFSET
VOLTAGE (mV)
-55
SUPPLY VOLTAGE (V)
V+ -0.6
TA = 25°C
IOH = -2mA
V+ -0.5
V+ -0.4
V+ -0.3
V+ -0.2
V+ -0.1
V+
125
TEMPERATURE (°C)
ALD2332A/ALD2332B/ALD2332
125
Advanced Linear Devices
2
4
6
8
SUPPLY VOLTAGE (V)
10
12
3 of 11
TYPICAL PERFORMANCE CHARACTERISTICS (cont'd)
INPUT BIAS CURRENT vs. TEMPERATURE
OUTPUT LOW VOLTAGE
vs. SUPPLY VOLTAGE
1000
INPUT BIAS CURRENT (pA)
OUTPUT LOW VOLTAGE (V)
0.6
TA = 25°C
IOL= 12mA
0.5
0.4
0.3
0.2
0.1
V+ = +5V
100
10
1
0.0
2
4
8
SUPPLY VOLTAGE (V)
0
-55
12
10
6
V = +3.5V
0.2
+
V = +5V
V+ = +10V
0.0
0
25
50
75
100
OUTPUT SATURATION VOLTAGE (V)
LOW LEVEL OUTPUT VOLTAGE (V)
+
0.3
-25
V+ = +5V
2.5
TA = 250C
1.5
TA = -250C
1.0
0.5
TA = -550C
0.0
15
30
60
45
75
OUTPUT SINK CURRENT (mA)
INPUT OFFSET VOLTAGE vs. TEMPERATURE
IOH = -2mA
6.0
V+ = +5V
4.0
V+ = +4V
0.0
INPUT OFFSET VOLTAGE (mV)
HIGH LEVEL OUTPUT VOTAGE (V)
125
TA = 850C
0
10.0
2.0
100
TA = 1250C
2.0
125
HIGH LEVEL OUTPUT VOLTAGE vs.
TEMPERATURE
V+ = +10V
75
3.0
AMBIENT TEMPERATURE (°C)
8.0
50
SATURATION VOLTAGE vs. SINK CURRENT
ISINK = 12mA
VINPUT = 1V
Differential
-55
25
AMBIENT TEMPERATURE ( C)
0.5
0.1
0
0
LOW LEVEL OUTPUT VOLTAGE
vs. TEMPERATURE
0.4
-25
2.0
1.6
RL = 5.1KΩ
V+ = +2.5V
1.2
0.8
0.4
0.0
+
V = +5V
-0.4
-0.8
-1.2
-1.6
-2.0
-55
-25
0
25
50
75
100
125
-55
ALD2332A/ALD2332B/ALD2332
-25
0
25
50
75
100
125
AMBIENT TEMPERATURE (°C)
AMBIENT TEMPERATURE (°C)
Advanced Linear Devices
4 of 11
TYPICAL PERFORMANCE CHARACTERISTICS (cont'd)
RESPONSE TIME FOR VARIOUS INPUT
OVERDRIVES
90.0
6.0
V+ = +5V
RL = 5.1KΩ
85.0
OUTPUT VOLTAGE (V)
COMMON MODE REJECTION MODE
(dB)
COMMON MODE REJECTION RATIO
vs. TEMPERATURE
80.0
75.0
70.0
65.0
5.0
RL = 5.1KΩ
-55
-25
0
25
50
75
100
50mV
20mV
3.0
10mV
2.0
5mV 2mV
+
V = +5V
TIME (µS)
OUTPUT VOLTAGE (V)
5.0
1mV
4.0
RL = 5.1KΩ
CL = 15pF
Input Step
2.0
10mV
1.0
2mV
50mV
0.0
+
V = +5V TA = 250C
-1.0
0.0 0.3 0.6 0.9
1.2 1.5 1.8
TIME (µS)
ALD2332A/ALD2332B/ALD2332
2.1 2.4 2.7
3.0
POWER SUPPLY REJECTION RATIO
(dB)
6.0
5mV
TA = 250C
-1.0
0.0 0.3 0.6 0.9 1.2 1.5 1.8 2.1 2.4 2.7 3.0
125
RESPONSE TIME FOR VARIOUS INPUT
OVERDRIVES
20mV
1mV
1.0
AMBIENT TEMPERATURE (°C)
3.0
Input Step
4.0
0.0
60.0
CL = 15pF
POWER SUPPLY REJECTION RATIO
vs.TEMPERATURE
90.0
+
V = +5V
RL = 5.1KΩ
85.0
80.0
75.0
70.0
65.0
60.0
-55
Advanced Linear Devices
-25
0
25
50
75
100
AMBIENT TEMPERATURE (0C)
125
5 of 11
TYPICAL APPLICATIONS
PRECISION SINGLE SUPPLY VOLTAGE
COMPARATOR WITH DIRECT RELAY DRIVER
PRECISION SINGLE SUPPLY VOLTAGE
COMPARATOR WITH DIRECT RELAY DRIVER
+5
+5
+5
5VRELAY
VR
VIN
VIN-
-
VIN+
+
5VRELAY
-
1K
+
-5
ZERO CROSSING DETECTOR
MULTIPLE RELAY DRIVE
+3V
+5V
+5V
50K
VIN
VREF
VOUT
+
VIN
-5V
+
DOUBLE DUAL LIMIT WINDOW COMPARATOR
+10V
+10V
50K
+10V
VH2
VH1
+
+
+10V
1K
VIN
+10V
+
VL1
+
VL2
50K
ALD2332A/ALD2332B/ALD2332
VL1 and VH1 first limit window send warning
VL2 and VH2 second limit window execute
system cutoff
Advanced Linear Devices
6 of 11
TYPICAL APPLICATIONS (cont'd)
VOLTAGE COMPARATOR WITH SINGLE
SUPPLY AND OUTPUT LEVEL SHIFT
DOUBLE DUAL PRECISON PHOTO
DETECTOR MONITOR
VExternal
VA= 0V to +10V
V+
+5V
BUZZER
VIN-
-
VIN+
+
VOUT
VOUT
+10V
LED
VLIMIT2
0
+
VLIMIT 1
LIGHT
PHOTODETECTOR
PRECISION VOLTAGE COMPARATOR WITH
COMPLEMENTARY PUSH-PULL OUTPUTS
+
-
V+
+
Q
LED turns on as photo-detector voltage
reaches VLIMIT 1. Both LED and horn turns on
as photo-detector voltage reaches VLIMIT 2.
VExternal = +10V, V+ = +5V.
VREF
+
VIN
Q
-
RESPONSE TIME MEASUREMENT CIRCUIT
Response time is defined as the interval between the application of an input step
function and the instant when the output reaches 50% of its maximum value as
measured by the following test circuit:
+5V
5.1KΩ
10X INPUT STEP
9KΩ
OUT
+
VIN
1KΩ
ALD2332A/ALD2332B/ALD2332
Advanced Linear Devices
7 of 11
TYPICAL APPLICATIONS (cont'd)
PUSH-PULL COMPLEMENTARY POWER MOSFET DRIVER
+10V
+10V
P- Channel VP 02
Power MOSFET
+10V
10K
+
V1
2A Source
VIN
2A Sink
40K
+10V
+
V2
N - Channel VN 01
Power MOSFET
10K
This circuit eliminates crossover current in the
complementary power transistors. The outputs can
be used to source and sink different loads or tied
together to provide push-pull drive of the same load.
TIME DELAY GENERATOR
V+
RF1
V1
V+
VREF
VIN
+
RT
RF2
V2
+
+
CT
RF3
V3
+
RF4
Design & Operating Notes:
1. As each output sources up to 10mA in the output high state, the output stage of a wired - OR low output circuit must be able to sink this current and still
provide desired output voltage levels. For TTL output levels, this consideration limits the number to a maximum of three ALD2302 outputs wired-OR
together.
2. In order to minimize stray oscillation, all unused inputs must be tied to ground.
3. The input bias and offset currents are essentially input protection diode reverse bias leakage currents, and are typically less than 1 pA at room
temperature. The currents are a function of ambient temperature, and would have to be considered in applications where very high source impedance
or high accuracy are involved.
4. The high output sinking current of 60mA for each output offers flexibility in many applications, as a separate buffer or driver would not be necessary to
drive the intended load. However, as the circuit normally operates close to ambient temperature due to its very low power consumption, thermal effects
caused by large output current transients must be considered in certain applications.
ALD2332A/ALD2332B/ALD2332
Advanced Linear Devices
8 of 11
TYPICAL APPLICATIONS (cont'd)
VOLTAGE LEVEL TRANSLATOR
PRECISION DUAL LIMIT WINDOW COMPARATAOR
V+
V+ = +10V
RLOAD
+
VREF(HIGH)
VREF
-
VOUT
VIN
VOUT
+
+
VIN
VREF(LOW)
RLOAD = 1.5KΩ
OUTPUT HIGH FOR VIN VREF(LOW)
VREF
= 1.4V for TTL input
VREF
=
V+
2
for CMOS input
Output VOUT swings from rail-to-rail
PRECISON VOLTAGE COMPARATOR WITH +/-5V
SUPPLY AND OUTPUT LEVEL SHIFT
+5V
+5V
100K
15K
VOUT
-
0.1µF
+5V
VOUT
+
100K
15K
0
0.1µF
-5V
PRECISION VOLTAGE COMPARATOR WITH OUTPUT LEVEL
SHIFT AND HIGH CURRENT LOAD DRIVER
+5V
+5V
VIN-
R1= 15K
VOUT
-
VOUT
0.066V
VIN+
R2=50
+
200Ω
RLoad
-4V
-5V
ALD2332A/ALD2332B/ALD2332
Advanced Linear Devices
9 of 11
SOIC-8 PACKAGE DRAWING
8 Pin Plastic SOIC Package
E
Millimeters
Dim
S (45°)
D
A
Min
1.35
Max
1.75
Min
0.053
Max
0.069
A1
0.10
0.25
0.004
0.010
b
0.35
0.45
0.014
0.018
C
0.18
0.25
0.007
0.010
D-8
4.69
5.00
0.185
0.196
E
3.50
4.05
0.140
0.160
1.27 BSC
e
A
A1
e
Inches
0.050 BSC
H
5.70
6.30
0.224
0.248
L
0.60
0.937
0.024
0.037
ø
0°
8°
0°
8°
S
0.25
0.50
0.010
0.020
b
S (45°)
H
L
ALD2332A/ALD2332B/ALD2332
C
ø
Advanced Linear Devices
10 of 11
PDIP-8 PACKAGE DRAWING
8 Pin Plastic DIP Package
E
E1
Millimeters
D
S
A2
A1
e
b
b1
A
L
Inches
Dim
Min
Max
Min
Max
A
3.81
5.08
0.105
0.200
A1
0.38
1.27
0.015
0.050
A2
1.27
2.03
0.050
0.080
b
0.89
1.65
0.035
0.065
b1
0.38
0.51
0.015
0.020
c
0.20
0.30
0.008
0.012
D-8
9.40
11.68
0.370
0.460
E
5.59
7.11
0.220
0.280
E1
7.62
8.26
0.300
0.325
e
2.29
2.79
0.090
0.110
e1
L
7.37
7.87
0.290
0.310
2.79
3.81
0.110
0.150
S-8
1.02
2.03
0.040
0.080
0°
15°
0°
15°
ø
c
e1
ø
ALD2332A/ALD2332B/ALD2332
Advanced Linear Devices
11 of 11
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