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MAX2037CCQ-D

Ultrasound Variable-Gain Amplifier

Maxim Integrated 

Ultrasound Variable-Gain Amplifier

Pin Description

PIN

1, 2, 5, 6, 7, 10,

11, 12, 19, 20,

21, 24, 25, 26,

29, 30, 31, 34,

35, 36, 41, 43,

44, 45, 47, 48,

51, 55, 58, 59,

64, 65, 66, 69,

73, 76, 79, 80,

81, 83, 84, 85,

88–92, 96, 97,

98

3

4

8

9

13

14

15

16, 39, 42, 46,

54, 72, 82, 87

17

18

22

23

27

28

32

33

37, 93

38

40

49

50

52

53

56

57

60

NAME

FUNCTION

GND

Ground

VGIN3-

VGIN3+

VGIN4-

VGIN4+

EXT_C1

EXT_C2

EXT_C3

VCC

VGIN5-

VGIN5+

VGIN6-

VGIN6+

VGIN7-

VGIN7+

VGIN8-

VGIN8+

VREF

EXT_RES

PD

VGOUT8+

VGOUT8-

VGOUT7+

VGOUT7-

VGOUT6+

VGOUT6-

VGOUT5+

VGA Channel 3 Inverting Differential Input

VGA Channel 3 Noninverting Differential Input

VGA Channel 4 Inverting Differential Input

VGA Channel 4 Noninverting Differential Input

External Compensation. Connect a 4.7µF capacitor to ground.

External Compensation. Connect a 4.7µF capacitor to ground.

External Compensation. Connect a 4.7µF capacitor to ground.

5V Power Supply. Bypass each VCC supply to ground with 0.1µF capacitors as close to the

pins as possible.

VGA Channel 5 Inverting Differential Input

VGA Channel 5 Noninverting Differential Input

VGA Channel 6 Inverting Differential Input

VGA Channel 6 Noninverting Differential Input

VGA Channel 7 Inverting Differential Input

VGA Channel 7 Noninverting Differential Input

VGA Channel 8 Inverting Differential Input

VGA Channel 8 Noninverting Differential Input

5V Reference Supply. Bypass to GND with a 0.1µF capacitor as close to the pins as

possible. Note that noise performance of the device is dependent on the noise contribution

from the supply to VREF. Use a low noise supply for VREF. VCC and VREF can be connected

together to share the same supply voltage if the supply for VCC exhibits low noise.

External Resistor. Connect a 7.5kΩ resistor to ground.

Power-Down Switch. Drive PD high to set the device in power-down mode. Drive PD low for

normal operation.

VGA Channel 8 Noninverting Differential Output

VGA Channel 8 Inverting Differential Output

VGA Channel 7 Noninverting Differential Output

VGA Channel 7 Inverting Differential Output

VGA Channel 6 Noninverting Differential Output

VGA Channel 6 Inverting Differential Output

VGA Channel 5 Noninverting Differential Output

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