XRD66092AID データシートの表示（PDF） - Exar Corporation

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XRD66092AID

CMOS 750 KSPS, 12-Bit Analog-to-Digital Converter with Serial Logic Interface Port

Exar Corporation 

...the analog plus companyTM

FEATURES

• 12-Bit Monotonic ADC with DNL = +1 LSB, INL = +2.5 LSB

• SNR > 66 dB

• Sampling Frequency < 750 kHz

• Internal Track and Hold

• Single 5 V Supply

• Rail-to-Rail Input Range

• VREF Range: 1.5 V to VDD

• CMOS Low Power: 175 mW (typ)

• Binary and Two’s Complement Digital Output Mode

• Serial Port

• ESD: 2000 V Minimum

XRD66092

CMOS 750 KSPS, 12-Bit

Analog-to-Digital Converter

with Serial Logic Interface Port

April 1996-1

• Underflow and Overflow Outputs

• Precision Aperture Output

• 6 Reference Resistor Taps

• Latch-Up Free

APPLICATIONS

• Control Systems

• Instrumentation

• DAS

• Sonar

• Digital Radio

GENERAL DESCRIPTION

The XRD66092 is a 12-bit 750 kHz subranging

Analog-to-Digital Converter with an internal track and hold.

The XRD66092 operates with a single supply ranging from +3

V to +5 V while consuming less than 175 mW of power (typical).

Separate pins for VRT and VRB allow flexibility for analog input

(VIN) and the reference voltage range (DVREF).

Data is presented at the serial output port every clock cycle

with a 2.5 cycle pipeline delay. LINV and MINV enable binary

and 2’s complement data formatting. 6 ladder tap pins provide

for transfer function adjustment.

SIMPLIFIED BLOCK DIAGRAM

VDD

GND

(3 Pads) (3 Pads) VDD GND

LINV MINV

VRT

REF Ladder

R12

MSB

Comparators

R9

R8

R7

LSB

R5

Comparators

R4

Encoder

and

Error

Correction

Logic

Over

D11

D10-D0

Under

OFW

UFW

S/H

VRB

VIN

Clock Logic

Aperture CLK

PLOAD

SCLK

SDO

Rev. 1.00

E1996

EXAR Corporation, 48720 Kato Road, Fremont, CA 94538 z (510) 668-7000 z FAX (510) 668-7017

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