AD ADCMP350YKS-REEL Comparators and reference circuit Datasheet

Comparators and Reference Circuits
ADCMP350/ADCMP352/ADCMP354/ADCMP356
FEATURES
FUNCTIONAL BLOCK DIAGRAMS
Comparators with 0.6 V on-chip references
Output stages:
Open-drain active-low (ADCMP350)
Push-pull active-low (ADCMP352)
Open-drain active-high (ADCMP354)
Push-pull active-high (ADCMP356)
High voltage (up to 22 V) tolerance on VIN and open-drain
output pins
Low power consumption (10 µA)
10 nA input bias current
15 mV hysteresis
5 µs propagation delay
Specified over −40°C to +125°C temperature range
4-lead SC70 package
VCC
ADCMP350/ADCMP352
REF
OUT (OD/PP)
VIN
GND
VCC
ADCMP354/ADCMP356
VIN
OUT (OD/PP)
REF
Voltage detectors
Microprocessor systems
Computers
Battery monitors
Intelligent instruments
Portable equipment
04745-001
APPLICATIONS
GND
`
Figure 1.
GENERAL DESCRIPTION
The ADCMP350/ADCMP352/ADCMP354/ADCMP356 parts
are comparator and reference circuits suitable for use in
general-purpose applications. The high voltage input and
output structures will allow voltages of up to 22 V on the input
of all devices and the output of the open-drain devices. High
performance over the −40°C to +125°C temperature range
makes them suitable for use in automotive and other thermally
harsh applications, while low power consumption and spaceefficient SC70 packaging make them ideal for battery-powered
portable equipment.
Table 1. Selection Table
Part No.
ADCMP350
ADCMP352
ADCMP354
ADCMP356
Reference Voltage (V)
0.6
0.6
0.6
0.6
Input Connection
Inverting
Inverting
Noninverting
Noninverting
Output
Open Drain
Push-Pull
Open Drain
Push-Pull
Rev. 0
Information furnished by Analog Devices is believed to be accurate and reliable.
However, no responsibility is assumed by Analog Devices for its use, nor for any
infringements of patents or other rights of third parties that may result from its use.
Specifications subject to change without notice. No license is granted by implication
or otherwise under any patent or patent rights of Analog Devices. Trademarks and
registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.326.8703
© 2004 Analog Devices, Inc. All rights reserved.
ADCMP350/ADCMP352/ADCMP354/ADCMP356
TABLE OF CONTENTS
Specifications..................................................................................... 3
Applications........................................................................................9
Absolute Maximum Ratings............................................................ 4
Adding Hysteresis..........................................................................9
ESD Caution.................................................................................. 4
Voltage Detector ............................................................................9
Pin Configuration and Function Descriptions............................. 5
Outline Dimensions ....................................................................... 10
Typical Performance Characteristics ............................................. 6
Ordering Guide .......................................................................... 10
REVISION HISTORY
10/04—Revision 0: Initial Version
Rev. 0 | Page 2 of 12
ADCMP350/ADCMP352/ADCMP354/ADCMP356
SPECIFICATIONS
VCC = Full operating range, TA = –40°C to +125°C, unless otherwise noted.
Table 2.
Parameter
SUPPLY
VCC Operating Voltage Range
VIN Operating Voltage Range
Supply Current
VIN THRESHOLD RISING
VIN THRESHOLD FALLING
Min
Typ
2.25
0
10
0.6
0.6
0.585
0.585
10
170
30
5
0.579
0.579
0.564
0.564
INPUT BIAS CURRENT
THRESHOLD TEMPERATURE COEFFICIENT
VIN TO OUT DELAY
OUT VOLTAGE LOW
OUT VOLTAGE HIGH
OUTPUT RISE TIME
OUTPUT FALL TIME
OUTPUT LEAKAGE CURRENT
Max
Unit
5.5
22
15
0.621
0.624
0.606
0.609
V
V
µA
V
V
V
V
nA
µA
ppm/°C
µs
V
V
0.4
0.8 × VCC
30
45
1
Rev. 0 | Page 3 of 12
ns
ns
µA
Test Conditions/Comments
VCC = 3.3V, TA = −40°C to +85°C
VCC = 3.3V, TA = −40°C to +125°C
VCC = 3.3V, TA = −40°C to +85°C
VCC = 3.3V, TA = −40°C to +125°C
VIN = 0.6 V
VIN = 22 V
VIN = VTH to (VTH − 100 mV)
VIN < VTH min, ISINK = 1.2 mA
VIN > VTH max, ISOURCE = 500 µA,
Push-pull only
Cout = 15 pF
Cout = 15 pF
OUT = 22 V, open drain only
ADCMP350/ADCMP352/ADCMP354/ADCMP356
ABSOLUTE MAXIMUM RATINGS
TA = 25°C, unless otherwise noted.
Table 3.
Parameter
VCC
VIN
OUT (Open Drain)
OUT (Push-Pull)
Operating Temperature Range
Storage Temperature Range
θJA Thermal Impedance, SC70
Lead Temperature
Soldering (10 sec)
Vapor Phase (60 sec)
Infrared (15 sec)
Rating
−0.3 V to +6 V
−0.3 V to +25 V
−0.3 V to +25 V
−0.3 V to (VCC + 0.3 V)
−40°C to +125°C
−65°C to +150°C
146°C/W
Stresses above those listed under Absolute Maximum Ratings
may cause permanent damage to the device. This is a stress
rating only and functional operation of the device at these or
any other conditions above those indicated in the operational
section of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
device reliability.
300°C
215°C
220°C
ESD CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the
human body and test equipment and can discharge without detection. Although this product features
proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy
electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance
degradation or loss of functionality.
Rev. 0 | Page 4 of 12
ADCMP350/ADCMP352/ADCMP354/ADCMP356
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
1
GND 2
ADCMP350/
ADCMP352/
ADCMP354/
ADCMP356
4 VCC
3 OUT
04745-002
VIN
Figure 2. Pin Configuration
Table 4. Pin Function Descriptions
Pin No.
1
2
3
4
Mnemonic
VIN
GND
OUT
VCC
Description
Monitors Analog Input Voltage. Connected to inverting or noninverting input, depending on model number.
Ground.
Digital Output. Open-drain or push-pull options, depending on model number.
Power Supply.
Rev. 0 | Page 5 of 12
ADCMP350/ADCMP352/ADCMP354/ADCMP356
TYPICAL PERFORMANCE CHARACTERISTICS
20
11.0
18
10.5
TA +125°C
TA +85°C
16
TA +25°C
SUPPLY CURRENT (µA)
10.0
ICC (µA)
9.5
9.0
TA –40°C
8.5
8.0
14
12
10
8
6
4
7.5
VCC (V)
0
05112-003
7.0
2.25 2.55 2.85 3.15 3.45 3.75 4.05 4.35 4.65 4.95 5.25 5.55
0
2
180
660
160
640
140
620
VTRIP TRIP RISING
600
VTRIP TRIP FALLING
560
65
80
95
110
125
TEMPERATURE (°C)
TA = +125°C
60
0
2
6
8
10
12
14
16
18
20
22
Figure 7. Input Leakage vs. Input Voltage
1.0
18
0.9
16
0.8
12
10
8
6
0.7
0.6
TA = 25°C
0.5
0.4
0.3
4
0.2
2
0.1
–25
–10
5
20
35
50
65
80
95
TEMPERATURE (°C)
110
125
0
0
0.3
0.6
0.9
1.2
1.5
1.8
VIN (V)
2.1
2.4
2.7
3.0
Figure 8. VIN Leakage Current vs. VIN Voltage (VCC = 3.8 V)
Figure 5. VIN Trip Hysteresis vs. Temperature
Rev. 0 | Page 6 of 12
3.3
05112-019
VIN LEAKAGE (µA)
HYSTERESIS
05112-005
HYSTERESIS (mV)
4
VIN (V)
20
0
–40
22
TA = +85°C
Figure 4. VIN Trip Threshold vs. Temperature.(VCC = 3.3V)
14
20
0
05112-004
50
18
TA = –40°C
40
35
16
80
20
20
14
100
520
5
12
TA = +25°C
120
540
–10
10
05112-007
IN LEAKAGE (µA)
VTRIP (mV)
200
680
–25
8
Figure 6. Supply Current vs. Input Voltage
700
500
–40
6
VIN (V)
Figure 3. ICC vs. VCC over Temperature.
580
4
05112-006
2
ADCMP350/ADCMP352/ADCMP354/ADCMP356
10000
200
190
TA = +25°C
TA = +125°C
1000
OUTPUT VOLTAGE (mV)
180
IN LEAKAGE (µA)
170
160
150
140
TA = +85°C
TA = +25°C
TA = –40°C
130
TA = +85°C
100
TA = +125°C
TA = –40°C
10
1
120
VCC (V)
0.1
0.01
05112-008
100
2.25 2.55 2.85 3.15 3.45 3.75 4.05 4.35 4.65 4.95 5.25 5.55
0.1
10
1
OUTPUT SINK CURRENT (mA)
Figure 9. Input Leakage vs. Supply Voltage (VIN = 22 V)
05112-010
110
Figure 12. Output Voltage vs. Output Sink Current (Isink = 500 mA)
700
120
680
OUTPUT LOW VOLTAGE (mV)
660
620
VTRIP RISING
600
580
VTRIP FALLING
560
540
100
80
60
40
20
VCC (V)
0
2.25 2.40 2.70 3.00 3.30 3.60 3.90 4.20 4.50 4.80 5.20 5.50
05112-009
500
2.25 2.55 2.85 3.15 3.45 3.75 4.05 4.35 4.65 4.95 5.25 5.55
SUPPLY VOLTAGE (V)
05112-011
520
Figure 13. Output Low Voltage vs. Supply Voltage (Isink = 500 mA)
Figure 10. VIN Trip Threshold vs. VCC
200
18
180
16
160
14
140
FALL TIME (ns)
20
12
HYSTERESIS
10
8
120
100
80
6
60
4
40
2
20
RISE TIME
0
2.25 2.55 2.85 3.15 3.45 3.75 4.05 4.35 4.65 4.95 5.25 5.55
VCC (V)
0
2.25 2.40 2.70 3.00 3.30 3.60 3.90 4.20 4.50 4.80 5.20 5.50
SUPPLY VOLTAGE (V)
Figure 14. Fall Time vs. Supply Voltage
Figure 11. VIN Trip Hysteresis vs. VCC
Rev. 0 | Page 7 of 12
05112-012
FALL TIME
05112-020
HYSTERESIS (mV)
VTRIP (mV)
640
ADCMP350/ADCMP352/ADCMP354/ADCMP356
100
80
1
CH1 = VIN
70
60
50
40
30
20
CH2 = VOUT
0
2.25 2.40 2.70 3.00 3.30 3.60 3.90 4.20 4.50 4.80 5.20 5.50
SUPPLY VOLTAGE (V)
CH1 20mV/DIV
Figure 15. Short-Circuit Sink Current vs. Supply Voltage
(Vcc = 3.3, PUSH-PULL Only)
CH2 1.00V/DIV
TIMEBASE: 10µs/DIV
05112-015
2
10
05112-013
SHORT-CIRCUIT SINK CURRENT (mA)
90
Figure 17. Propagation Delay Timing, 10 mV Overdrive
25
PROPAGATION DELAY (µs)
20
1
CH1 = VIN
tPLH
15
10
tPHL
5
CH2 = VOUT
10
20
30
40
50
60
70
80
90
INPUT OVERDRIVE (mV)
100 110 120 130
CH1 100mV/DIV
05112-014
0
Figure 16. Propagation Delay vs. Input Overdrive (Vcc = 3.3, PUSH-PULL Only)
Rev. 0 | Page 8 of 12
CH2 1.00V/DIV
TIMEBASE: 10µs/DIV
Figure 18. Propagation Delay Timing, 100 mV Overdrive
05112-016
2
ADCMP350/ADCMP352/ADCMP354/ADCMP356
APPLICATIONS
ADDING HYSTERESIS
VOLTAGE DETECTOR
To prevent oscillations at the output caused by noise or slowly
moving signals passing the switching threshold, positive
feedback can be used to add hysteresis to the noninverting parts
(ADCMP354 and ADCMP356).
The ADCMP35x parts can be used to monitor voltages, such as
battery monitoring or threshold detectors. Using a resistor
divider at the input to select the appropriate trip voltage, the
comparator can be configured to give a logic output when the
input passes that threshold. Figure 20 shows the typical
configuration of the ADCMP354 for monitoring a supply to
indicate that the voltage is above a certain level.
For the noninverting configuration shown in Figure 19, two
resistors are used to create different switching thresholds,
depending on whether the input signal is increasing or
decreasing in magnitude. When the input voltage is increasing,
the threshold is above VREF, and when it’s decreasing, the
threshold is below VREF.
VCC = 5V
ADM331
ADCMP354
The upper input threshold level is given by
VIN
V IN_HI =
VREF (R1 + R2 ) − VCC R1
VREF = 0.6V
R1
R2
RPULLUP
OUT
VIN
R1
05112-018
where VREF = 0.6 V.
The lower input threshold level is given by
V IN_LO =
Figure 20. Voltage Detector Application
VREF (R1 + R2 )
R2
The hysteresis is the difference between these voltage levels and
is given by
∆V IN =
VCC R1
R2
VCC = 5V
ADM331
ADCMP354
VREF = 0.6V
OUT
VIN
RLOAD
R1
05112-017
VIN
RPULLUP
R2
Figure 19. Noninverting Comparator Configuration with Hysteresis
Rev. 0 | Page 9 of 12
ADCMP350/ADCMP352/ADCMP354/ADCMP356
OUTLINE DIMENSIONS
2.20
1.80
1.35
1.15
3
4
1
2.40
1.80
2
PIN 1
0.65 BSC
*0.50 BSC
1.10
0.80
1.00
0.80
0.18
0.10
0.10 MAX
0.30
0.15
SEATING
0.70 PLANE
0.50
0.30
0.10
0.10 COPLANARITY
*PACKAGE OUTLINE CORRESPONDS IN FULL TO EIAJ SC82
EXCEPT FOR WIDTH OF PIN-2 AS SHOWN
Figure 21. 4-Lead Thin Shrink Small Outline Transistor Package [SC70]
(EIAJ SC82 body)
(KS-4)
Dimensions shown in millimeters
ORDERING GUIDE
Model
ADCMP350YKS-REEL7
ADCMP352YKS-REEL7
ADCMP354YKS-REEL7
ADCMP356YKS-REEL7
Temperature Range
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
Package Description
4-Lead SC70
4-Lead SC70
4-Lead SC70
4-Lead SC70
Rev. 0 | Page 10 of 12
Branding
M0Z
M11
M13
M15
Package Option
KS-4
KS-4
KS-4
KS-4
ADCMP350/ADCMP352/ADCMP354/ADCMP356
NOTES
Rev. 0 | Page 11 of 12
ADCMP350/ADCMP352/ADCMP354/ADCMP356
NOTES
© 2004 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective owners.
D05112-0-10/04(0)
Rev. 0 | Page 12 of 12
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