SPT5400 查看數據表（PDF） - Signal Processing Technologies

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SPT5400

13-BIT, OCTAL VOLTAGE-OUTPUT DAC WITH PARALLEL INTERFACE

Signal Processing Technologies 

SPT

SIGNAL PROCESSING TECHNOLOGIES

SPT5400

13-BIT, OCTAL VOLTAGE-OUTPUT DAC

WITH PARALLEL INTERFACE

FEATURES

• Full 13-bit performance without external adjustments

• Eight DACs in one package

• Buffered voltage outputs

• Guaranteed monotonic to 13 bits

• Unipolar or bipolar output swing to ±4.5 V

• Output settling time of 7 µs to ±1/2 LSB

• Double-buffered digital inputs

APPLICATIONS

• Automatic test equipment

• Flat-panel displays

• Arbitrary function generators

• Instrumentation

• Process control

DESCRIPTION

The SPT5400 has eight 13-bit voltage output digital-to-

analog converters on one chip. It operates from ±5 V

power supplies and has maximum voltage output swings

of up to ±4.5 V without the addition of external compo-

nents. Novel circuit topology allows for a guaranteed

monotonicity of 13 bits without the need for additional

circuitry. The SPT5400 has four separate reference volt-

age inputs, one for each pair of DACs. Four separate

analog ground pins allow for separate offset voltages for

each DAC pair. Each DAC can be asynchronously loaded

through a common 13-bit bus into a double-buffered set

of latches. All logic inputs are TTL/CMOS compatible.

The SPT5400 is available in a 44-lead PLCC package

over the commercial temperature range of 0 °C to

+70 °C.

BLOCK DIAGRAM

VDD

REFAB REFCD REFEF REFGH

–

INPUT

LATCH A

DAC

LATCH A

DAC A

+

–

INPUT

LATCH B

DAC

LATCH B

DAC B

+

–

INPUT

LATCH C

DAC

LATCH C

DAC C

+

–

INPUT

LATCH D

DAC

LATCH D

DAC D

+

D12–D0 DATA BUS

–

INPUT

LATCH E

DAC

LATCH E

DAC E

+

–

INPUT

LATCH F

DAC

LATCH F

DAC F

+

–

INPUT

LATCH G

DAC

LATCH G

DAC G

+

–

INPUT

LATCH H

DAC

LATCH H

DAC H

+

VOUTA

AGNDAB

VOUTB

VOUTC

AGNDCD

VOUTD

VOUTE

AGNDEF

VOUTF

VOUTG

AGNDGH

VOUTH

CS

CONTROL

WR

LOGIC

A0–A2

LDAB

LDCD

LDEF

LDGH

CLR

VSS GND

Signal Processing Technologies, Inc.

4755 Forge Road, Colorado Springs, Colorado 80907, USA

Phone: (719) 528-2300 FAX: (719) 528-2370 Website: http://www.spt.com E-Mail: sales@spt.com

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