ADC08D502 datasheet(4/43 Pages) TI1

номер детали	ADC08D502

подробное описание детали	ADC08D502 High Performance, Low Power, Dual 8-Bit, 500 MSPS A/D Converter

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GND

VA

50k

GND

VA

50k

200k

8 pF

GND

VA

50 k:

GND

VA

GND

VA

50k

200k

8 pF

VA

SDATA

DDR

ADC08D502

SNOSC85 – AUGUST 2012

www.ti.com

Pin Functions

Pin No.

Symbol

Equivalent Circuit

Description

DCLK Edge Select, Double Data Rate Enable and Serial Data

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

OutEdge / DDR /

4

data transitions. When this pin is floating or connected to 1/2 the

SDATA

supply voltage, DDR clocking is enabled. When the extended

control mode is enabled, this pin functions as the SDATA input.

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

15

DCLK_RST

synchronize the DCLK outs of multiple converters.

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

26

PD

into the Power Down Mode.

Calibration Cycle Initiate. A minimum 80 input clock cycles logic low

30

CAL

followed by a minimum of 80 input clock cycles high on this pin

initiates the self calibration sequence.

A logic high on the PDQ pin puts only the "Q" ADC into the Power

29

PDQ

Down mode.

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 650 mVP-P. A logic high on this pin sets

14

FSR/ECE

the full-scale differential input range to 870 mVP-P. 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 VA/2.

Calibration Delay 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 clock cycles after power up before calibration

127

CalDly / SCS

begins. With pin 14 floating, this pin acts as the enable pin for the

serial interface input and the CalDly value becomes 0b (short delay

with no provision for a long power-up calibration delay). When this

pin is floating or connected to a voltage equal to VA/2,

4

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Аналогичный номер детали - ADC08D502

производитель	номер детали	датащи	подробное описание детали
Texas Instruments	ADC08D502	902Kb / 48P	[Old version datasheet] High Performance, Low Power, Dual 8-Bit, 500 MSPS A/D Converter
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	ADC08D502CIYB/NOPB	902Kb / 48P	[Old version datasheet] High Performance, Low Power, Dual 8-Bit, 500 MSPS A/D Converter
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