AME811R 查看數據表（PDF） - AME, Inc

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AME811R

3-1/2 Digit A/D Converter - Low Power With HOLD And Differential Reference Inputs

AME, Inc 

Analog Microelectronics, Inc.

AME811/AME811A/AME811R

3-1/2 Digit A/D Converter - Low Power

With HOLD And Differential Reference Inputs

n Electrical Characteristics

Unless otherwise noted, AME811 is specified at TA = 25oC, fclock = 48KHz. Supply voltage = 9V (V+ to V-)

Parameter

Zero Input Reading

Conditions

Min Typ Max

Unit

Vin = 0V

-0 w 0 +0 Digital Reading

Full-Scale = 200.0mV

Ratiometric Reading

Vin = Vref = 100.0mV 999 999/1000 1000 Digital Reading

Roll-Over Error

(Difference in Reading for

-Vin = +Vin ≈ 200.0mV -1 –0.2 +1

Equal Positive and Negative

Counts

Reading Near Full-Scale)

Linearity (Max. Deviation

Full-Scale = 200.0mV -1 –0.2 +1

From Best Straight Line Fit)

Counts

Common-Mode

Rejection Ratio

Vcm = –1V, Vin =0V

50

Full-Scale = 200.0mV

µV/V

Noise (Pk-Pk Value Not

Vin = 0V

15

Exceeded 95% of Time)

Full-Scale = 200.0mV

µV

Leakage Current at Input

Zero Reading Drift

Analog Common Voltage

(With respect to V+)

Vin = 0V

1

10

Vin = 0V, 0oC to 70oC

0.2 1

25KΩ Between

Common and V+

2.8 3 3.2

pA

µV/oC

V

Temp. Coeff. of Analog

25KΩ Between

Common (With respect to V+) Common and V+

0oC m TA m 70oC

50 75

ppm/oC

Low Battery Flag

V+ to V-

6.3 7.0 7.7

V

Test Pin Voltage

With respect to V+

4

5

6

V

LCD Segment Drive Voltage V+ to V- = 9V

4

5

6

V

Backplane Drive Voltage

V+ to V- = 9V

4

5

6

V

Notes: 1. Input voltage may exceed the supply voltages provided the input current is limited to ±100µA.

2. Dissipation rating assumes a device is mounted with all leads soldered to printed circuit board.

3

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