ALD ALD2301SA Dual precision cmos voltage comparator with open drain driver Datasheet

ADVANCED
LINEAR
DEVICES, INC.
ALD2301A/ALD2301B
ALD2301/ALD2301C
DUAL PRECISION CMOS VOLTAGE COMPARATOR WITH OPEN DRAIN DRIVER
GENERAL DESCRIPTION
APPLICATIONS
The ALD2301A/ALD2301B/ALD2301/ALD2301C is a monolithic high
performance dual voltage comparator built with advanced silicon gate
CMOS technology. It features very high typical input impedance of
10 12Ω; low input bias current of 10pA; fast response time of 300ns; very
low power dissipation of 55µA per comparator; and single +5V or dual
±5V power supply operation.
• High source impedance voltage
comparison circuits
• Dual limit window comparator
• Power supply voltage monitor
• Photo-detector sensor circuit
• Relay or LED driver
• Oscillators
• Battery operated instruments
• Remote signal detection
The input voltage range includes ground, making this comparator ideal
for low level signal detection with high source impedance. The outputs
are open-drain configuration, allowing maximum application flexibility,
such as wired-OR connection. The outputs can be connected to a
higher external voltage than V +.
PIN CONFIGURATION
The ALD2301A/ALD2301B/ALD2301/ALD2301C is ideal for a great
variety of voltage comparator applications, especially low level signal
detection circuits requiring low standby power, yet retaining high
output current capability as needed.
FEATURES
• Fanout of 30 LS TTL loads
• Low supply current of 110µA typical
• Functional equivalent to LM193 industry
standard comparators
• Extremely low input bias currents -- 10pA typical
• 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 signal and low level
signals -- 300ns typical for TTL inputs
• CMOS, NMOS and TTL compatible
• Wired-OR open drain outputs
• High output sinking current -- 60mA typical
• Low supply current spikes
OUT1
1
8
V+
-IN 1
2
7
OUT 2
+IN 1
3
6
-IN 2
GND
4
5
+IN 2
TOP VIEW
DA, PA, SA PACKAGE
BLOCK DIAGRAM
(8) V+
ORDERING INFORMATION
INVERTING INPUT
-IN 1 (2)
Operating Temperature Range *
-55°C to +125°C
0°C to +70°C
0°C to +70°C
(1) OUT 1
NONINVERTING INPUT
+IN 1 (3)
V+
8-Pin
CERDIP
Package
8-Pin
Small Outline
Package (SOIC)
8-Pin
Plastic Dip
Package
INVERTING INPUT
-IN 2 (6)
(7) OUT 2
NONINVERTING INPUT
+IN 2 (5)
(4) GND
ALD 2301A DA
ALD 2301B DA
ALD 2301 DA
ALD 2301C DA
ALD2301A SA
ALD 2301B SA
ALD 2301 SA
ALD 2301C SA
ALD2301A PA
ALD2301B PA
ALD2301 PA
ALD2301C PA
* Contact factory for industrial temperature range
© 1998 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 PA, SA package
DA 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
TA = 25°C V+ = +5V unless otherwise specified
Parameter
Symbol Min
2301
Typ
Max
Min
2301A
Typ
Max
Min
2301B
Typ Max
Voltage
Supply
V+
Supply
Current
IS
Voltage Gain
AVD
Input Offset
Voltage
VOS
Input Offset
Current1
IOS
10
200
10
200
10
200
Input Bias
Current1
IB
10
200
10
200
10
200
Common
Mode Input
Voltage
Range2
VICR
3
12
110
50
3
180
150
12
110
50
V+ -1.5
-0.3
Low Level
VOL
Output Voltage
0.15
180
150
10
3
12
110
50
V + -1.5
-0.3
0.4
0.15
2301C
Typ
Max
3
12
180
150
2
Min
110
50
V + -1.5
0.4
0.15
0.4
V
µA
20
mV
10
400
pA
10
400
pA
-0.3
0.15
Test
Conditions
RLOAD = ∞
V/mV RLOAD ≥ 15KΩ
150
5
-0.3
180
Unit
RLOAD ≥ 1.5KΩ
V + -1.5
V
0.4
V
ISINK = 12mA
VINPUT = 1V
Differential
mA
VOL = 1.0 V
nA
VOH = 5.0 V
Low Level
Output
Current
IOL
High Level
Leakage
Current
IOH
.01
tRP
650
650
650
650
ns
RL = 5.1KΩ
CL = 15pF
100mV Input
Step/5mV
Overdrive
300
300
300
300
ns
RL = 5.1KΩ
Response
Time2
24
60
24
20
60
.01
24
20
60
.01
24
20
60
.01
20
CL =15pF
TTL - Level
Input Step
Notes :
1
2
7-2
Consists of junction leakage currents.
Sample tested parameters.
Advanced Linear Devices
ALD2301A/ALD2301B
ALD2301/ALD2301C
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
-25
0
25
50
75
100
COMMON - MODE VOLTAGE REFERRED
TO SUPPLY VOLTAGE
RESPONSE TIME FOR VARIOUS
INPUT OVERDRIVES
INPUT
VOLTAGE (mV)
VS = ± 2.5V
V+
-0.5
≈
≈
0.5
V-0.5
-55
-25
0
25
50
75
100
TA = 25°C
VS = ±2.5V
V+
100
VIN
5.1K
+
-
≈
0V
+2.5
VOUT
5mV
10mV
20mV
2mV
-2.5
125
0.0
0.2
0.4
INPUT
VOLTAGE (mV)
VS = ±2.5V
0.9
100
1.0
1.2
1.4
OUTPUT
VOLTAGE (V)
85°C
25°C
-25°C
-55°C
0.0
15
30
45
60
OUTPUT SINK CURRENT (mA)
TA = 25°C
VS = ±2.5V
V+
VIN
0
5.1K
+
-
≈
125°C
ALD2301A/ALD2301B
ALD2301/ALD2301C
0.8
RESPONSE TIME FOR VARIOUS
INPUT OVERDRIVES
1.2
0
0.6
TIM E (µs)
1.5
0.3
≈
V-
50mV
0.0
SATURATION VOLTAGE vs.
SINK CURRENT
0.6
7
0
TEMPERATURE (°C)
OUTPUT SATURATION
VOLTAGE (V)
+2.5
0.0
DIFFERENTIAL INPUT VOLTAGE (mV)
0.5
-1.0
-2.5
125
TEM PERATURE (°C)
OUTPUT
VOLTAGE (V)
COMMON - MODE VOLTAGE LIMITS (V)
-55
0V
VOUT
V-
2mV
+2.5
≈
5mV
10mV
20mV
50mV
0.0
-2.5
75
Advanced Linear Devices
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
TIME ( µS)
7-3
TYPICAL PERFORMANCE CHARACTERISTICS
TOTAL SUPPLY CURRENT vs.
TOTAL SUPPLY VOLTAGE
SUPPLY CURRENT vs. TEMPERATURE
200
+
160
VS = ±2.5V
No Load
All comparators
180
TA = 25°C
RL = ∞
SUPPLY CURRENT (µA)
SUPPLY CURRENT ( µA)
V+
140
120
100
80
160
140
120
100
80
60
2.0
6.0
4.0
-55
12.0
10.0
8.0
-25
SUPPLY VOLTAGE (V)
0
25
50
75
100
125
TEMPERATURE (°C)
INPUT OFFSET VOLTAGE vs.
TEMPERATURE
OFFSET VOLTAGE (mV)
3.0
2.8
VCM = 0V
VS = ± 2.5V
2.6
2.4
2.2
2.0
1.8
-55
0
-25
25
50
75
100
125
TEMPERATURE (°C)
TYPICAL APPLICATIONS
DUAL LIMIT WINDOW COMPARATOR
DUAL LIMIT PHOTO-DETECTOR
MONITOR
VExternal
V+
V+
1/2 ALD2301
VREF(HIGH)
V+
RLOAD
+
VOLTAGE COMPARATOR WITH
COMPLEMENTARY OUTPUTS
BUZZER
+
Q
-
1/2 ALD2301
1/2 ALD2301
LED
-
VLIMIT2
+
VREF
VOUT
-
+
VIN
VIN
VLIMIT 1
LIGHT
VREF(LOW)
1/2 ALD2301
MINIMUM RLOAD = 1.5KΩ
PHOTODETECTOR
+
+
-
Q
1/2 ALD2301
1/2 ALD2301
OUTPUT HIGH FOR VIN < VREF(HIGH)
AND VIN > VREF(LOW)
LED turns on as photo-detector voltage
reaches V LIMIT1. Both LED and horn turns on
as photo-detector voltage reaches VLIMIT2.
V EXTERNAL = +12V V+ = +5V.
7-4
Advanced Linear Devices
ALD2301A/ALD2301B
ALD2301/ALD2301C
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