ALD ALD4302ASB Quad precision cmos voltage comparator with push-pull driver Datasheet

ADVANCED
LINEAR
DEVICES, INC.
ALD4302A/ALD4302
QUAD PRECISION CMOS VOLTAGE COMPARATOR WITH PUSH-PULL DRIVER
GENERAL DESCRIPTION
APPLICATIONS
The ALD4302 is a monolithic high performance quad voltage comparator
built with advanced silicon gate CMOS technology. It features very high
typical input impedance of 1012Ω; low input bias current of 10pA; fast
response time of 120ns; very low power dissipation of 150µA per comparator; and single +5V or dual ±5V power supply operation.
• 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, making this comparator ideal for
single supply low level signal detection with high source impedance. The
outputs can source and sink current, allowing application flexibility, and can
be used in either wired-OR connection without pull up resistor or push-pull
configuration. The ALD4302 can be used in wired-OR connection with
other open drain circuits such as the ALD2301 and ALD2303 voltage
comparators.
PIN CONFIGURATION
The ALD4302 is ideal for a great variety of precision voltage comparator
applications, especially low level signal detection circuits requiring low
standby power, yet retaining high output current capability.
FEATURES
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Guaranteed to drive 200Ω loads
Fanout of 30 LS TTL loads
Low supply current of 150µA each comparator
Extremely low input bias currents -- 10pA
Virtually eliminates source impedance effects
Low operating supply voltage of 3V to 12V
Single +5V and dual supply ±5V operation
High speed for both large and small signals 120ns for TTL inputs and 400ns for 5mV overdrive
CMOS, NMOS and TTL compatible
Push-pull outputs
High output sinking current -- 60mA
Low supply current spikes
High gain -- 100V/mV
02
1
14
03
01
2
13
04
V+
3
12
GND
-IN 1
4
11
+IN 4
+IN 1
5
10
-IN 4
-IN 2
6
9
+IN 3
+IN 2
7
8
-IN 3
DB, PB, SB PACKAGE
BLOCK DIAGRAM
V+
ORDERING INFORMATION
-55°C to +125°C
Operating Temperature Range*
0°C to 70°C
0°C to +70°C
14-Pin
CERDIP
Package
14-Pin
Small Outline
Package( SOIC)
14-Pin
Plastic Dip
Package
ALD4302A DB
ALD4302 DB
ALD4302A SB
ALD4302 SB
ALD4302A PB
ALD4302 PB
* Contact factory for industrial temperature range
INVERTING INPUT
- IN 1 (4)
-
NONINVERTING INPUT
+ IN 1 (5)
+
INVERTING INPUT
- IN 2 (6)
-
NONINVERTING INPUT
+ IN 2 (7)
+
INVERTING INPUT
- IN 3 (8)
-
NONINVERTING INPUT
+ IN 3 (9)
+
INVERTING INPUT
- IN 4 (10)
-
NONINVERTING INPUT
+ IN 4 (11)
+
(3)
(2) OUT 1
(1) OUT 2
(14) OUT 3
(13) OUT 4
(12)
© 2005.1 Advanced Linear Devices, Inc. 415 Tasman Drive, Sunnyvale, California 94089 -1706 Tel: (408) 747-1155 Fax: (408) 747-1286 http://www.aldinc.com
ABSOLUTE MAXIMUM RATINGS
Supply voltage, V+
Differential input voltage range
Power dissipation
Operating temperature range PB, SB package
DB package
Storage temperature range
Lead temperature, 10 seconds
13.2V
-0.3V to V+ +0.3V
600 mW
0°C to +70°C
-55°C to +125°C
-65°C to +150°C
+260°C
OPERATING ELECTRICAL CHARACTERISTICS
T A = 25°C V+= +5V unless otherwise specified
4302A
Symbol
Voltage
Supply
VS
V+
Supply
Current
IS
Voltage
Gain
AVD
Input Offset
Voltage
VOS
Input Offset
Current 1
I OS
10
200
800
Input Bias
Current 1
IB
10
200
1000
Common
Mode Input
Voltage
Range 2
VICR
Min
Typ
4302
Parameter
±1.5
3
600
30
Max
Min
±6
12
±1.5
3
1000
100
Typ
Unit
Conditions
±6
12
V
V
Dual Supply
Single Supply
µA
RLOAD = ∞
V/mV
RLOAD ≥15KΩ
10
mV
RLOAD =1.5KΩ
10
200
800
pA
10
200
1000
pA
0°C ≤ TA ≤ 70°C
V+ -1.5
V
0°C ≤ TA ≤ 70°C
0.4
V
ISINK =12mA
VINPUT =1V
Differential
600
30
V+ -1.5
1000
100
5
-0.3
Test
Max
-0.3
Low Level
Output
Voltage
VOL
Low Level
Output
Current
I OL
24
60
24
60
mA
VOL =1.0V
High Level
Output
Voltage
VOH
3.5
4.5
3.5
4.5
V
IOH = -2mA
400
400
ns
120
120
ns
Response
Time 2
Notes:
1
2
t RP
0.18
0.4
0.18
RL = 5.1KΩ
CL = 15pF
100mV Input
Step/5mV
Overdrive
RL = 5.1KΩ
CL = 15pF
TTL- Level Input
Step
Consists of junction leakage currents
Sample tested parameters
ALD4302/ALD4302
Advanced Linear Devices
2
TYPICAL PERFORMANCE CHARACTERISTICS
SATURATION VOLTAGE
vs. TEMPERATURE
TRANSFER FUNCTION
+6.0
VS = ± 2.5V
ISINK = 50mA
1.2
OUTPUT VOLTAGE (V)
SATURATION VOLTAGE (V)
1.4
1.0
0.8
0.6
0.4
0.2
TA = 25°C
VS = ±6V
RL = 5.1K
0.0
-6.0
0
-55
-25
0
25
50
75
100
-2.5
125
TEM PERATURE (°C)
RESPONSE TIME FOR VARIOUS
INPUT OVERDRIVES
COMMON - MODE LIMITS (V)
0.5
VS = ± 2.5V
-0.5
-1.0
≈
≈
0.5
V-0.5
-55
-25
0
25
50
75
100
OUTPUT
VOLTAGE (V)
INPUT
VOLTAGE (mV)
COMMON - MODE VOLTAGE REFERRED
TO SUPPLY VOLTAGE
V+
0
VIN
100
≈
+2.5
V+
0V
≈
V-
TTL
5mV
50mV
0.0
10mV
20mV
-2.5
0.0
125
0.1
0.2
INPUT
VOLTAGE (mV)
1.2
0.9
125°C
85°C
100
25°C
-25°C
-55°C
0.3
0.0
45
0
VIN
60
V+
+
-
≈
0.6
0V
VOUT
0.7
≈
V-
5mV
10mV
20mV
50mV
TTL
0.0
-2.5
75
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
TIM E (µs)
OUTPUT SINK CURRENT (mA)
ALD4302/ALD4302
0.5
TA = 25°C
VS = ±2.5V
+2.5
OUTPUT
VOLTAGE (V)
OUTPUT SATURATION
VOLTAGE (V)
VS = ±2.5V
30
0.4
RESPONSE TIME FOR VARIOUS
INPUT OVERDRIVES
1.5
15
0.3
TIM E (µs)
SATURATION VOLTAGE vs.
SINK CURRENT
0
TA = 25°C
VS = ±2.5V
VOUT
+
-
TEMPERATURE (°C)
0.6
+2.5
0.0
DIFFERENTIAL INPUT VOLTAGE (mV)
Advanced Linear Devices
3
TYPICAL PERFORMANCE CHARACTERISTICS
SUPPLY CURRENT vs. TEMPERATURE
TOTAL SUPPLY CURRENT vs.
TOTAL SUPPLY VOLTAGE
1000
+
1000
VS = ±2.5V
No Load
All comparators
900
TA = 25°C
RL = ∞
SUPPLY CURRENT (µA)
SUPPLY CURRENT ( µA)
V+
800
600
400
200
800
700
600
500
400
300
2.0
6.0
4.0
-55
12.0
10.0
8.0
0
-25
100
75
125
6
INPUT OFFSET VOLTAGE (mV)
+3
NORMALIZED INPUT OFFSET
VOLTAGE (mV)
50
INPUT OFFSET VOLTAGE vs. SUPPLY
VOLTAGE REPRESENTATIVE SAMPLES
NORMALIZED INPUT OFFSET VOLTAGE
vs. TEMPERATURE
VCM = 0V
VS = ±2.5V
+2
+1
0
-1
-2
-3
TA = 25°C
4
2
0
-2
-4
-6
-55
-25
0
25
50
75
100
125
2
4
TEMPERATURE (°C)
OUTPUT HIGH VOLTAGE
vs. SUPPLY VOLTAGE
6
8
SUPPLY VOLTAGE (V)
10
12
OUTPUT LOW VOLTAGE
vs. SUPPLY VOLTAGE
V+ -0.6
0.6
TA = 25°C
IOH = -2mA
V+ -0.5
OUTPUT LOW VOLTAGE (V)
OUTPUT HIGH VOLTAGE FROM V+ (V)
25
TEMPERATURE (°C)
SUPPLY VOLTAGE (V)
V+ -0.4
V+ -0.3
V+ -0.2
V+ -0.1
V+
TA = 25°C
IOL= 12mA
0.5
0.4
0.3
0.2
0.1
0.0
2
ALD4302/ALD4302
4
6
8
SUPPLY VOLTAGE (V)
10
12
Advanced Linear Devices
2
4
6
8
SUPPLY VOLTAGE (V)
10
12
4
TYPICAL APPLICATIONS
ZERO CROSSING DETECTOR
DOUBLE DUAL LIMIT WINDOW COMPARATOR
+5V
+12V
+12V
VOUT
VIN
+
50K
+12V
VH2
+
-5V
1/4 ALD4302
VH1
+
+12V
47K
MULTIPLE RELAY DRIVE
VIN
+
+5V
+5V
VL1
VREF
VIN
+
+
VL2
1/4 ALD4302
50K
ALD4302
VL1 and VH1 first limit window send warning.
VL2 and VH2 second limit window execute system cutoff.
VOLTAGE LEVEL TRANSLATOR
V+ = +10V
VREF
VOUT
VIN
+
1/4 ALD4302
VREF
= 1.4V for TTL input
VREF
=
V+
2
for CMOS input
Output VOUT swings from rail- to- rail
ALD4302/ALD4302
Advanced Linear Devices
5
TYPICAL APPLICATIONS
PUSH-PULL COMPLEMENTARY POWER MOSFET DRIVER
+12V
1/4 ALD4302
+12V
P- Channel VP 02
Power MOSFET
+12V
10K
+
V1
2A Source
VIN
2A Sink
40K
+12V
+
V2
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.
N - Channel VN 01
Power MOSFET
10K
1/4 ALD4302
TIME DELAY GENERATOR
V+
RF1
1/4 ALD4302
1/4 ALD4302
V1
V+
VREF
VIN
+
RT
RF2
1/4 ALD4302
V2
+
+
CT
RF3
1/4 ALD4302
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 ALD4302 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.
These 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.
ALD4302/ALD4302
Advanced Linear Devices
6
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