ADC08D1000EVAL datasheet(3/31 Pages) NSC

Nome de Peças	ADC08D1000EVAL

Descrição Electrónicos	High Performance, Low Power, Dual 8-Bit, 1 GSPS A/D Converter

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Fabricante Electrônico	NSC [National Semiconductor (TI)]

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Pin Descriptions and Equivalent Circuits

Pin Functions

Pin No.

Symbol

Equivalent Circuit

Description

3

OutV / SCLK

Output Voltage Amplitude and Serial Interface Clock. Tie this

pin high for normal differential DCLK and data amplitude.

Ground this pin for a reduced differential output amplitude and

reduced power consumption. See Section 1.1.6. When the

extended control mode is enabled, this pin functions as the

SCLK input which clocks in the serial data. See Section 1.3

4

OutEdge / DDR

/ SDATA

DCLK Edge Select, Double Data Rate Enable and Serial Data

Input. This input sets the output edge of DCLK+ at which the

output data transitions. (See Section 1.1.5.2). When this pin is

floating or connected to 1/2 the supply voltage, DDR clocking

is enabled. When the extended control mode is enabled, this

pin functions as the (SDATA) input. See Section 1.2 for

details on the extended control mode.

15

DCLK_RST

DCLK Reset. A positive pulse on this pin is used to reset and

synchronize the DCLK outs of multiple converters. See

Section 1.5 for detailed description.

26

29

PD

PDQ

Power Down Pins. A logic high on the PD pin puts the entire

device into the Power Down Mode. A logic high on the PDQ

pin puts only the "Q" ADC into the Power Down mode.

30

CAL

Calibration Cycle Initiate. A minimum 10 input clock cycles

logic low followed by a minimum of 10 input clock cycles high

on this pin initiates the self calibration sequence. See Section

2.4.2.

14

FSR/ECE

Full Scale Range Select and Extended Control Enable. In

non-extended control mode, a logic low on this pin sets the

full-scale differential input range to 600 mV

P-P. A logic high on

this pin sets the full-scale differential input range to 800

mV

P-P. See Section 1.1.4. To enable the extended control

mode, whereby the serial interface and control registers are

employed, allow this pin to float or connect it to a voltage

equal to V

A/2. See Section 1.2 for information on the

extended control mode.

127

CalDly / DES /

SCS

Calibration Delay, Dual Edge Sampling and Serial Interface

Chip Select. With a logic high or low on pin 14, this pin

functions as Calibration Delay and sets the number of input

clock cycles after power up before calibration begins (See

Section 1.1.1). With pin 14 floating, this pin acts as the enable

pin for the serial interface input and the CalDly value

becomes "0" (short delay with no provision for a long

power-up calibration delay). When this pin is floating or

connected to a voltage equal to V

A/2, DES (Dual Edge

Sampling) mode is selected where the "I" input is sampled at

twice the input clock rate and the "Q" input is ignored. See

Section 1.1.5.1.

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Nº de peça semelhante - ADC08D1000EVAL

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National Semiconductor ...	ADC08D1000EVAL	1Mb / 37P	High Performance, Low Power, Dual 8-Bit, 1 GSPS A/D Converter

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Descrição semelhante - ADC08D1000EVAL

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