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TLV5638 Datasheet Preview

TLV5638 Datasheet

Low Power Dual 12-Bit DAC

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TLV5638
www.ti.com
SLAS225C – JUNE 1999 – REVISED JANUARY 2004
2.7-V TO 5.5-V LOW-POWER DUAL 12-BIT DIGITAL-TO-ANALOG CONVERTER WITH
INTERNAL REFERENCE AND POWER DOWN
FEATURES
Dual 12-Bit Voltage Output DAC
Programmable Internal Reference
Programmable Settling Time:
– 1 µs in Fast Mode,
– 3.5 µs in Slow Mode
Compatible With TMS320 and SPI™ Serial
Ports
Differential Nonlinearity <0.5 LSB Typ
Monotonic Over Temperature
APPLICATIONS
Digital Servo Control Loops
Digital Offset and Gain Adjustment
Industrial Process Control
Machine and Motion Control Devices
Mass Storage Devices
D, JG PACKAGE
(TOP VIEW)
DIN 1
SCLK 2
CS 3
OUTA 4
8 VDD
7 OUTB
6 REF
5 AGND
FK PACKAGE
(TOP VIEW)
NC
SCLK
NC
CS
NC
3 2 1 20 19
4
18
5
17
6
16
7
15
8
14
9 10 11 12 13
NC
OUTB
NC
REF
NC
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, 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.
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, QSPI are trademarks of Motorola, Inc.
Microwire is a trademark of National Semiconductor Corporation.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 1999–2004, Texas Instruments Incorporated




etcTI

TLV5638 Datasheet Preview

TLV5638 Datasheet

Low Power Dual 12-Bit DAC

No Preview Available !

TLV5638
SLAS225C – JUNE 1999 – REVISED JANUARY 2004
www.ti.com
This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated
circuits be handled with appropriate precautions. Failure to observe proper handling and installation
procedures can cause damage.
ESD damage can range from subtle performance degradation to complete device failure. Precision
integrated circuits may be more susceptible to damage because very small parametric changes could
cause the device not to meet its published specifications.
TA
0°C to 70°C
40°C to 85°C
40°C to 125°C
55°C to 125°C
AVAILABLE OPTIONS
SOIC
(D)
TLV5638CD
TLV5638ID
TLV5638QD
TLV5638QDR
PACKAGE
CERAMIC DIP
(JG)
TLV5638MJG
20 PAD LCCC
(FK)
TLV5638MFK
FUNCTIONAL BLOCK DIAGRAM
REF AGND VDD
PGA With
Output Enable
Voltage
Bandgap
Power-On
Reset
Power
and Speed
Control
2
DIN
SCLK
CS
2
2-Bit
Control
Latch
Serial
Interface
12
and
Control
12
12-Bit
12
DAC A
Latch
Buffer
12
12
12-Bit
DAC B
Latch
x2
OUTA
x2
OUTB
2


Part Number TLV5638
Description Low Power Dual 12-Bit DAC
Maker etcTI
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TLV5638 Datasheet PDF






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