Low-Power, 14-Bit Analog-to-Digital Converters

with Parallel Interface

6

_______________________________________________________________________________________

Typical Operating Characteristics (continued)

TOTAL HARMONIC DISTORTION

vs. FREQUENCY

FREQUENCY (kHz)

10

1

-100

-90

-80

-70

-60

-50

-40

-30

-20

-10

0

-110

0.1

100

SAMPLE RATE = 165ksps

SPURIOUS-FREE DYNAMIC RANGE

vs. FREQUENCY

FREQUENCY (kHz)

10

1.0

10

20

30

40

50

60

70

80

90

100

110

0

0.1

100

SAMPLE RATE = 165ksps

FFT AT 1kHz

FREQUENCY (kHz)

60

40

20

-120

-100

-80

-60

-40

-20

0

-140

080

SAMPLE RATE = 165ksps

Pin Description

PIN

NAME

MAX1065

MAX1066

MAX1065

MAX1066

FUNCTION

11

D6

D4/D12

Three-State Digital Data Output

22

D7

D5/D13

Three-State Digital Data Output. D13 is the MSB.

3

3

D8

D6/0

Three-State Digital Data Output

4

4

D9

D7/0

Three-State Digital Data Output

5

—

D10

—

Three-State Digital Data Output

6

—

D11

—

Three-State Digital Data Output

7

—

D12

—

Three-State Digital Data Output

8

—

D13

—

Three-State Digital Data Output (MSB)

95

R/

C

Read/

Convert Input. Power up and put the MAX1065/MAX1066 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

6

EOC

End Of Conversion.

EOC drives low when conversion is complete.

11

7

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

12

8

AGND

Analog Ground. Primary analog ground (star ground).

13

9

AIN

Analog Input

14

10

AGND

Analog Ground. Connect Pin 14 to Pin 12 (MAX1065). Connect Pin 10 to Pin 8

(MAX1066).