AD7680

–4–

REV. PrE

PRELIMINARY TECHNICAL DATA

PIN FUNCTION DESCRIPTION

Pin

Mnemonic

Function

G N D

Analog Ground. Ground reference point for all circuitry on the AD7680. All analog input

signals should be referred to this GND voltage.

SCLK

Serial Clock. Logic input. SCLK provides the serial clock for accessing data from the part.

This clock input is also used as the clock source for the AD7680's conversion process.

SDATA

Data Out. Logic Output. The conversion result from the AD7680 is provided on this output

as a serial data stream. The bits are clocked out on the falling edge of the SCLK input.

The

data stream from the AD7680 consists of 4 leading zeros followed by 16 bits of conversion

data which is provided MSB first. This will be followed by 4 trailing zeroes if

CS is held low

for a total of 24 SCLK cycles. See serial Interface section.

CS

Chip Select. Active low logic input. This input provides the dual function of initiating con-

versions on the AD7680 and framing the serial data transfer.

N C

No Connect. This pin should be left unconnected.

AD7680 PIN CONFIGURATIONS

ORDERING GUIDE

Linearity

Package

Model

Range

Error (LSB)

Branding

AD7680BRJ

-40°C to +85°C

±2 typ

RJ-6

C Q B

AD7680BRM -40°C to +85°C

±2 typ

RM-8

C Q B

NOTES

MSOP

SOT-23

AD7680

TOP VIEW

1

2

3

4

5

6

+5

SDATA

SCLK

VDD

GND

VIN

(Not to Scale)

AD7680

TOP VIEW

1

2

3

4

5

6

7

8

+5

SDATA

SCLK

VDD

GND

VIN

(Not to Scale)

GND

NC