AD8137(2004) データシートの表示（PDF） - Analog Devices

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AD8137
(Rev.:2004)

Low Cost, Low Power, Differential ADC Driver

Analog Devices 

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS

–IN 1

VOCM 2

VS+ 3

+OUT 4

AD8137

8 +IN

7 PD

6 VS–

5 –OUT

Figure 4. Pin Configuration

Table 6. Pin Function Descriptions

Pin No. Name Description

1

−IN

Inverting Input.

2

VOCM

An internal feedback loop drives the

output common-mode voltage to be

equal to the voltage applied to the VOCM

pin, provided the amplifier’s operation

remains linear.

3

VS+

Positive Power Supply Voltage.

4

+OUT Positive Side of the Differential Output.

5

−OUT Negative Side of the Differential Output.

6

VS−

Negative Power Supply Voltage.

7

PD

Power Down.

8

+IN

Noninverting Input.

50Ω

VTEST

TEST

50Ω

SIGNAL

SOURCE

RF

52.3Ω

RG = 1kΩ

MIDSUPPLY VOCM

52.3Ω

RG = 1kΩ

CF

+

AD8137

–

CF

RF

Figure 5. Basic Test Circuit

–

RL, dm 1kΩ VO, dm

+

50Ω

VTEST

TEST

50Ω

SIGNAL

SOURCE

RF = 1kΩ

52.3Ω

RG = 1kΩ

MIDSUPPLY VOCM

52.3Ω

RG = 1kΩ

+

AD8137

–

RF = 1kΩ

RS

–

CL, dm RL, dm VO, dm

+

RS

Figure 6. Capacitive Load Test Circuit, G = 1

Rev. A | Page 7 of 24

AD8137

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