MP7651AS 查看數據表（PDF） - Exar Corporation

零件编号

产品描述 (功能)

比赛名单

MP7651AS

8-Channel, Voltage Output 10 MHz Input Bandwidth 8-Bit Multiplying DACs with Serial Digital Data Port and Chip Select Decoder

Exar Corporation 

MP7651

8-Channel, Voltage Output

10 MHz Input Bandwidth 8-Bit Multiplying

DACs with Serial Digital Data Port

and Chip Select Decoder

FEATURES

• 8 Independent 2-Quadrant Multiplying 8-Bit DACs

• Serial Digital Input Data and Address Port (3-Wire

Standard) plus Internal Chip Address Decoder©

• Dual Supplies (+5 V typ.)

• High Speed:

– 12.5 MHz Digital Clock Rate

– VREF to VOUT Settling Time: 150ns to

8-bit (typ)

– Voltage Reference Input Bandwidth:

10 MHz (typ)

• Low Power: 150mW (typ)

• Low AC Voltage Reference Feedthrough

• Excellent Channel-to-Channel Isolation

• DNL = +0.8 LSB, INL = +1 LSB (typ)

• DACs Matched to +0.5% (typ)

• Low Harmonic Distortion: 0.25% typical

with VREF = 1 V p-p @ 1 MHz

• VREF/2 Output Preset Level

• Latch-Up Proof

• Greater than 2000 V ESD Protection

APPLICATIONS

• ATE

• Process Control (Low Noise)

• Convergence Adjustment for High

Resolution Monitors (Work Stations)

• Digital Gain/Attenuation/Offset Control

• Trimmer Replacement

GENERAL DESCRIPTION

The MP7651 is ideal for direct gain control of video, compos-

ite video, CCD and other high frequency analog signals. The de-

vice includes 8-channels of high speed, high bandwidth, two

quadrant, multiplying, 8-bit accurate digital-to-analog converter.

It includes an output drive buffer per channel capable of driving

+1mA (typ) to a load. DNL of better than +0.8 LSB is achieved

with a channel-to-channel matching of better than 0.5%. Stabil-

ity, matching, and precision of the DACs is achieved by using

EXAR’s thin film technology. Also, excellent channel-to-channel

isolation is achieved with EXAR’s BiCMOS process which can-

not be achieved using a typical CMOS technology.

An open loop architecture (patent pending) provides wide

small signal bandwidth from VREF to output up to 10 MHz (typ),

fast output settling time, and VREF feedthrough isolation of

–65dB or better. In addition, low distortion in the order of 0.25%

with a 1 V p–p, 1 MHz signal.

A specified and constant input impedance of each VREF+ in-

put gives flexibility for optimal system design. The serial data

3-wire standard µ-processor logic interface reduces pin count,

package size (28 pin), and board wire (space). Additionally, the

internal chip select decoder allows for easy daisy chaining with-

out the addition of separate control logic.

MP7651 is fabricated on a junction isolated, high speed, dual

metal, linear compatible BiCMOS (BiCMOS IVTM) thin film resis-

tors. This process enables precision high speed analog/digital

(mixed-mode) circuits to be fabricated on the same chip.

Rev. 2.00

1

Share Link: