16-Bit, 135ksps, Single-Supply ADCs with

Bipolar Analog Input Range

6

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SINAD vs. FREQUENCY

FREQUENCY (kHz)

10

10

20

30

40

50

60

70

80

90

100

0

1

100

SPURIOUS-FREE DYNAMIC RANGE

vs. FREQUENCY

FREQUENCY (kHz)

10

20

40

60

80

100

120

0

1

100

TOTAL HARMONIC DISTORTION

vs. FREQUENCY

FREQUENCY (kHz)

10

-100

-90

-80

-70

-60

-50

-40

-30

-20

-10

0

-110

1

100

Pin Description

PIN

NAME

FUNCTION

1

D8

Three-State Digital Data Output

2

D9

Three-State Digital Data Output

3

D10

Three-State Digital Data Output

4

D11

Three-State Digital Data Output

5

D12

Three-State Digital Data Output

6

D13

Three-State Digital Data Output

7

D14

Three-State Digital Data Output

8

D15

Three-State Digital Data Output (MSB)

9R/C

Read/Convert Input. Power up and place the MAX1179/MAX1187/MAX1189 in acquisition mode by

holding R/C low during the first falling edge of CS. During the second falling edge of CS, the level

on R/C determines whether the reference and reference buffer power down or remain on after

conversion. Set R/C high during the second falling edge of CS to power down the reference and

buffer, or set R/C low to leave the reference and buffer powered up. Set R/C high during the third

falling edge of CS to put valid data on the bus.

10

EOC

End of Conversion. EOC drives low when conversion is complete.

11

Analog Supply Input. Bypass with a 0.1µF capacitor to AGND.

12

AGND

Analog Ground. Primary analog ground (star ground).

13

AIN

Analog Input

14

AGND

Analog Ground. Connect pin 14 to pin 12.

Typical Operating Characteristics (continued)