TLV5638
2.7 V TO 5.5 V LOW POWER DUAL 12-BIT DIGITAL-TO-ANALOG
CONVERTER WITH INTERNAL REFERENCE AND POWER DOWN
SLAS225A – JUNE 1999 – REVISED JANUARY 2000
D, JG PACKAGE
(TOP VIEW)
features
Dual 12-Bit Voltage Output DAC
DIN
SCLK
CS
V
DD
OUTB
REF
1
2
3
4
8
7
6
5
Programmable Internal Reference
Programmable Settling Time:
1 µs in Fast Mode,
OUTA
AGND
3.5 µs in Slow Mode
Compatible With TMS320 and SPI Serial
Ports
FK PACKAGE
(TOP VIEW)
Differential Nonlinearity <0.5 LSB Typ
Monotonic Over Temperature
applications
3
4
2
1
20 19
Digital Servo Control Loops
Digital Offset and Gain Adjustment
Industrial Process Control
NC
SCLK
NC
NC
18
17
16
15
14
OUTB
NC
5
6
7
Machine and Motion Control Devices
Mass Storage Devices
CS
REF
NC
NC
8
9
10 11 12 13
description
The TLV5638 is a dual 12-bit voltage output DAC
with a flexible 3-wire serial interface. The serial
interface allows glueless interface to TMS320 and
SPI , QSPI , and Microwire serial ports. It is programmed with a 16-bit serial string containing 4 control and
12 data bits.
The resistor string output voltage is buffered by a x2 gain rail-to-rail output buffer. The buffer features a Class
AB output stage to improve stability and reduce settling time. The programmable settling time of the DAC allows
the designer to optimize speed vs power dissipation. With its on-chip programmable precision voltage
reference, the TLV5638 simplifies overall system design.
Because of its ability to source up to 1 mA, the reference can also be used as a system reference. Implemented
with a CMOS process, the device is designed for single supply operation from 2.7 V to 5.5 V. It is available in
an 8-pin SOIC package to reduce board space in standard commercial, industrial, and automotive temperature
ranges. It is also available in JG and FK packages in the military temperature range.
AVAILABLE OPTIONS
PACKAGE
T
A
SOIC
(D)
CERAMIC DIP
(JG)
20 PAD LCCC
(FK)
0°C to 70°C
TLV5638CD
TLV5638ID
—
—
—
—
–40°C to 85°C
TLV5638QD
TLV5638QDR
–40°C to 125°C
–55°C to 125°C
—
—
—
TLV5638MJG
TLV5638MFK
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
SPI and QSPI are trademarks of Motorola, Inc.
Microwire is a trademark of National Semiconductor Corporation.
Copyright 2000, Texas Instruments Incorporated
On products compliant to MIL-PRF-38535, all parameters are tested
unless otherwise noted. On all other products, production
processing does not necessarily include testing of all parameters.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
1
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