Download ALD2331 - Advanced Linear Devices

ADVANCED
LINEAR
DEVICES, INC.
ALD2331A/ALD2331B/ALD2331
DUAL PRECISION CMOS VOLTAGE COMPARATOR
WITH OPEN DRAIN OUTPUT DRIVER
GENERAL DESCRIPTION
APPLICATIONS
The ALD2331A/ALD2331B/ALD2331 is a monolithic high performance
dual precision voltage comparator built with advanced silicon gate EPAD®
CMOS technology intended for high precision analog applications. The
ALD2331A/ALD2331B/ALD2331 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 750ns with only 10mV input step signal; very low power
dissipation of 55µA per comparator; and single (+5V) or dual (±5V) power
supply operation; and 50mA open drain output drivers.
• Simple precision reference voltage setting
• High source impedance voltage
comparison circuits
• MOSFET driver
• 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 configurations, allowing maximum application flexibility, such as
wired-OR connection and various different output loads. An external pullup resistor is required for each output, although the value of the pull-up
resistor can vary over a wide range in order to suit the application needs.
The outputs can be connected to a higher external voltage than V+.
BENEFITS
The ALD2331A/ALD2331B/ALD2331 is ideal for a great variety of precison
analog voltage comparator applications, especially low level signal detection circuits requiring low standby power, yet retaining high output current
capability as needed.
• Simple precision reference voltage setting
• On-chip input pre-amplifier and output
buffers
• Precision voltage comparison without
pre-amplifier
• Eliminates need for second power supply
• Wide range of pull-up resistor values
PIN CONFIGURATION
FEATURES
•
•
•
•
•
•
•
•
•
•
•
•
•
Fanout of 30LS TTL loads
Guaranteed to drive 200Ω loads
Low supply current of 55µA typical
Pinout of LM193 industry standard voltage comparators
Extremely low input bias currents -- typically 10pA
Virtually eliminates source impedance effects
Low operating supply voltage of 3V to 10V
Single (+5V) and dual supply (±5V) operation
High speed for both large and small level signals
-- 300ns typical for TTL inputs
CMOS, NMOS and TTL compatible
Wired-OR open drain outputs
High output sink current -- typically 50mA
Low supply current spike
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)
8-PinPlastic
Dip Package
ALD2331ASAL
ALD2331BSAL
ALD2331SAL
ALD2331APAL
ALD2331BPAL
ALD2331PAL
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+
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 SAL, PAL 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
2331A
Parameter
Symbol
Min
Supply
Voltage
VS
V+
±1.5
3
Supply
Current
IS
Typ
±5
10
110
Voltage Gain
AVD
Input Offset Voltage
VOS
0.2
Input Offset Current1
IOS
IB
Input Bias Current1
Common Mode Input
2
Voltage Range
VICR
Low Level Sink
Output Voltage
VOL
Low Level Sink
Output Current
IOL
High Level Sink Output
Leakage Current
2
Response Time
50
Min
Typ
±1.5
3
180
150
±5
10
110
50
2331
Max
Min
±1.5
3
180
150
Typ
110
50
Max
Unit
V
V
Dual Supply
Single Supply
180
µA
No Load
Two Comparators
150
V/mV
RLOAD ≥ 15K
RLOAD ≥ 1.5KΩ
0.5
1.0
1.0
2.0
mV
0.01
20
0.01
20
0.01
20
pA
0.01
20
0.01
20
0.01
20
pA
V+-1.5
V
V+-1.5
0.15
0.4
50
IL
0.01
tRP
1.1
0.15
24
20
V+-1.5
-0.3
0.4
50
0.01
-0.3
0.15
24
20
0.4
50
0.01
Test Conditions
±5
10
0.5
-0.3
24
2331B
Max
20
V
ISINK = 12mA
VINPUT = 1V Differential
mA
VOL = 1.0 V
SINK OUTPUT ON
nA
VOUT = 5.0 V
SINK OUTPUT OFF
1.1
1.1
µs
RL = 5.1KΩ, CL = 15pF
5mV Input Step/
5mV Overdrive
tRP
2.4
2.4
2.4
µs
RL = 5.1KΩ ,CL =15pF
1mVInput Step/
1mV Overdrive
tRP
600
600
600
ns
RL = 5.1KΩ, CL = 15pF
100mV Input Step/
5mV Overdrive
tRP
300
300
300
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
ALD2331A/ALD2331B/ALD2331
Advanced Linear Devices
2 of 8
TYPICAL PERFORMANCE CHARACTERISTICS
COMMON - MODE VOLTAGE LIMITS (V)
TRANSFER FUNCTION
OUTPUT VOLTAGE (V)
+5.0
TA = 25°C
0.0
-5.0
-2.5
+2.5
0.0
COMMON - MODE VOLTAGE REFERRED
TO SUPPLY VOLTAGE
0.5
V+
VS = ± 2.5 V
-0.5
-1.0
≈
≈
0.5
V-0.5
-55
-25
0
DIFFERENTIAL INPUT VOLTAGE (mV)
SUPPLY CURRENT vs.TEMPERATURE
50
75
100
125
SUPPLY CURRENT vs. SUPPLY VOLTAGE
200
200
V+ = +5V
No Load
Two Comparators
180
160
180
SUPPLY CURRENT (µA)
SUPPLY CURRENT (µA)
25
TEMPERATURE (°C)
140
120
100
80
No Load
Two Comparators
160
TA = -550C
140
120
TA = 250C
100
80
60
TA = 1250C
40
20
60
0
-55
-25
0
25
50
75
100
125
2
4
6
8
10
INPUT BIAS CURRENT vs. TEMPERATURE
LOW LEVEL OUTPUT VOLTAGE
vs. TEMPERATURE
LOW LEVEL OUTPUT VOLTAGE (V)
SUPPLY VOLTAGE (V)
1000
INPUT BIAS CURRENT (pA)
0
AMBIENT TEMPERATURE (°C)
V+ = +5V
100
10
1
0
-55
-25
0
25
50
75
100
125
0.5
ISINK = 12mA
VINPUT = 1V
Differential
0.4
V+ = +3.5V
0.3
V+ = +5V
0.2
0.1
V+ = +10V
0.0
-55
-25
0
25
50
75
100
125
AMBIENT TEMPERATURE (°C)
AMBIENT TEMPERATURE (0C)
ALD2331A/ALD2331B/ALD2331
12
Advanced Linear Devices
3 of 8
TYPICAL PERFORMANCE CHARACTERISTICS (cont'd)
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
COMMON MODE REJECTION RATIO
vs. TEMPERATURE
COMMON MODE REJECTION MODE
(dB)
INPUT OFFSET VOLTAGE (mV)
INPUT OFFSET VOLTAGE vs. TEMPERATURE
75
100
90.0
V+ = +5V
RL = 5.1KΩ
85.0
80.0
75.0
70.0
65.0
60.0
-55
125
0
V = +5V
TA = 125 C
TA = 850C
2.0
TA = 250C
1.5
TA = -250C
1.0
0.5
TA = -550C
0.0
0
15
30
60
45
75
100.0
VOH = V+
100
125
TA = 1250C
TA = 850C
1.0
0.1
TA = 250C
0.0
3
4
5
6
7
8
9
10
11
OUTPUT OFF-STATE VOLTAGE (V)
POWER SUPPLY REJECTION RATIO
vs.TEMPERATURE
RESPONSE TIME FOR VARIOUS INPUT
OVERDRIVES
90.0
6.0
+
V = +5V
RL = 5.1KΩ
OUTPUT VOLTAGE (V)
POWER SUPPLY REJECTION RATIO
(dB)
75
10.0
OUTPUT SINK CURRENT (mA)
85.0
50
OUTPUT OFF-STATE VOLTAGE vs.
OUTPUT LEAKAGE CURRENT
OUTPUT LEAKAGE CURRENT (nA)
OUTPUT SATURATION VOLTAGE (V)
3.0
2.5
25
AMBIENT TEMPERATURE (°C)
SATURATION VOLTAGE vs. SINK CURRENT
+
0
-25
AMBIENT TEMPERATURE (°C)
80.0
75.0
70.0
65.0
5.0
RL = 5.1KΩ
CL = 15pF
Input Step
50mV
4.0
20mV
3.0
10mV
2.0
5mV 2mV
1mV
1.0
0.0
60.0
-55
-25
0
25
50
75
100
AMBIENT TEMPERATURE (0C)
ALD2331A/ALD2331B/ALD2331
125
0
V+ = +5V TA = 25 C
-1.0
0.0 0.3 0.6 0.9 1.2 1.5 1.8 2.1 2.4 2.7 3.0
TIME (µS)
Advanced Linear Devices
4 of 8
TYPICAL PERFORMANCE CHARACTERISTICS (cont'd)
RESPONSE TIME FOR VARIOUS INPUT
OVERDRIVES
OUTPUT LOW VOLTAGE
vs. SUPPLY VOLTAGE
6.0
OUTPUT LOW VOLTAGE (V)
0.6
OUTPUT VOLTAGE (V)
5.0
1mV
4.0
RL = 5.1KΩ
CL = 15pF
Input Step
3.0
2.0
20mV
5mV
10mV
1.0
2mV
50mV
0.0
+
V = +5V TA = 250C
-1.0
TA = 25°C
IOL= 12mA
0.5
0.4
0.3
0.2
0.1
0.0
0.0 0.3 0.6 0.9
1.2 1.5 1.8
2.1 2.4 2.7
3.0
2
4
6
8
SUPPLY VOLTAGE (V)
TIME (µS)
12
10
TYPICAL APPLICATIONS
PRECISION SINGLE SUPPLY VOLTAGE
VOLTAGE COMPARATOR WITH
COMPARATOR WITH DIRECT RELAY DRIVER
COMPLEMENTARY OUTPUTS
V+
+
Q
+5
-
+5
5VRELAY
VR
-
VIN
+
VREF
VIN
+
Q
-
VOLTAGE COMPARATOR
VOLTAGE COMPARATOR WITH SINGLE
WITH +/-5V SUPPLY AND +5V RELAY DRIVE
SUPPLY AND OUTPUT LEVEL SHIFT
VA= 0V to +10V
+5
+5V
VINVIN+
-
5VRELAY
+
1K
VIN-
-
VIN+
+
+10V
0
-5
ALD2331A/ALD2331B/ALD2331
VOUT
VOUT
Advanced Linear Devices
5 of 8
TYPICAL APPLICATIONS (cont'd)
VOLTAGE COMPARATOR WITH +/-5V
VOLTAGE COMPARATOR WITH OUTPUT LEVEL
SUPPLY AND OUTPUT LEVEL SHIFT
SHIFT AND HIGH CURRENT LOAD DRIVER
+5V
+5V
+5V
100K
15K
R1= 15K
+5V
VIN-
VOUT
+
100K
+5V
VOUT
-
0.1µF
15K
VOUT
-
VOUT
0.066V
0
VIN+
0.1µF
200Ω
R2=50
+
RLoad
-5V
-4V
-5V
RESPONSE TIME MEASUREMENT CIRCUIT
Response time is defined as the internal 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
DUAL LIMIT PHOTO DETECTOR MONITOR
DUAL LIMIT WINDOW COMPARATOR
VExternal
V+
VREF(HIGH)
+
V+
BUZZER
RLOAD
LED
VLIMIT2
VOUT
+
+
N
VREF(LOW)
MINIMUM RLOAD = 1.5KΩ
LIGHT
VLIMIT 1
PHOTODETECTOR
LED turns on as photo-detector
voltage reaches VLIMIT1. Both LED
and horn turns on as photo-detector
voltage reaches VLIMIT2.
VEXTERNAL= +10V, V+ = +5V
OUTPUT HIGH FOR VIN < VREF(HIGH)
AND VIN > VREF(LOW)
ALD2331A/ALD2331B/ALD2331
+
Advanced Linear Devices
6 of 8
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
ALD2331A/ALD2331B/ALD2331
C
ø
Advanced Linear Devices
7 of 8
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
ALD2331A/ALD2331B/ALD2331
Advanced Linear Devices
8 of 8