AD22001N データシートの表示（PDF） - Analog Devices

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AD22001N

5-Channel Monolithic Comparator for Lamp Monitoring

Analog Devices 

AD22001–SPECIFICATIONS (TA = +22؇C, VS = +13.5 V unless otherwise noted)

Parameter

Test Conditions Min

Typ

Max Units

DIFFERENTIAL INPUTS (Voltage Drop from Shunt Resistor: Pins 4 & 5, 8 & 9, 10 & 11, 14 & 15, 16 & 17)

VINDIFF

VINCM

Comparator Threshold Voltage1

1.5

Common-Mode Threshold Voltage1

5

Power Supply Sensitivity of VINDIFF2

9 V ≤ VS ≤ 16 V

Temperature Compensation of VINDIFF3

1.75

50

3770

IINB

Input Bias Current

IINC

Constant Current Source4

10

30

60

SINGLE-ENDED INPUTS (Fuse Monitoring: Pins 6, 19)

VINF

Fuse Input Threshold Voltage5

CHIP ENABLE CONTROL INPUT (Pin 1)

VINCE

Chip Enable, Input High

9

VINCD

Chip Disable (Stop Operation)6

OUTPUTS (Pins 7, 12, 13, 18)

VOUTL

Output Voltage, Low

Indicates No Fault in Lamp Circuit

VOUTH

Output Voltage, High

Indicates Fault in Lamp Circuit

Load = 500 µA

9 V ≤ VS ≤ VSSDH

Load = 50 µA

VOUTPS–2.5

2.0 mV

V

%

ppm/°C

µA

µA

4

V

V

6

V

0.6 V

VOUTPS V

POWER SUPPLY (Pin 2: +VS, Pin 20: GND)

VS

Supply Voltage

IS

Quiescent Supply Current

VOUTH: No Load

POWER SUPPLY OUTPUT (Pin 3)

VOUTPS

Power Supply Output Voltage

IOUTPS

Max Output Voltage

Power Supply Output Current7

OPERATING SHUTDOWN (Safety Features)

VSSDH

Operation Shutdown at High

Power Supply Voltages8

VSSDL

Operation Shutdown at Low

Power Supply Voltage9

9

Pin 1 High

1

Pin 1 Low

10 V < VS < 14.5 V VS–0.5

IOUTPS ≤ 1 mA

2

30

7

3

100

VS–0.3

16

33

30

V

5

mA

µA

VS

V

18

V

mA

36

V

9

V

TEMPERATURE RANGE

TA

Operating Temperature Range

PACKAGE

Plastic DIP (N-20)

–40

+125 °C

AD22001N

NOTES

1In the presence of a common-mode voltage greater than 5 V, if the shunt voltage applied to the comparator does not exceed the threshold (i.e., the bulb is switched

on but does not draw current), then the device will indicate a failure.

2At VS = 13.5 V, the differential input threshold voltage is typically 1.75 mV. With an increase of V S, the threshold voltage, VINDIFF, will change as well.

Power supply sensitivity of 50% means that when the power supply voltage V S increases by 10%, the threshold voltage VINDIFF will be increased by half of this per-

centage value: 5%.

3This is the temperature coefficient to compensate for any temperature influence on the external copper PCB track shunt resistors. 3770 ppm/ °C is equal to 6.6 µV/°C.

4This current source is used to test the lamp when it is switched off (cold lamp test).

5If the voltage at the input from the fuse (Pin 6 or 19) does not exceed the threshold voltage, then the output will indicate a failure.

6When the Chip Enable is open-circuited, the chip is disabled.

7Shorting VOUTPS to ground will cause the device to stop operating for that period. However, the device will not suffer any damage.

8At this voltage, or above, the internal power supply and the power output V OUTPS will be shut off.

9Below the minimum voltage, the circuit will shut down. Above the maximum, the circuit will be on if enabled.

All min and max specifications are guaranteed, although only those marked in boldface are tested on all production units at final test.

Specifications subject to change without notice.

–2–

REV. A

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