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TLV5638M

更新时间： 2024-11-25 11:06:51
品牌 Logo 应用领域
德州仪器 - TI /
页数 文件大小 规格书
23页 679K
描述
12 位、1 或 3.5us DAC，具有串行输入、双路 DAC，可编程内部基准电压、稳定时间和功耗

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TLV5638M 数据手册

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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  
D, JG PACKAGE  
(TOP VIEW)  
•
•
•
Dual 12-Bit Voltage Output DAC  
Programmable Internal Reference  
Programmable Settling Time:  
– 1 µs in Fast Mode,  
DIN  
SCLK  
CS  
V
DD  
1
2
3
4
8
7
6
5
OUTB  
REF  
– 3.5 µs in Slow Mode  
OUTA  
AGND  
•
Compatible With TMS320 and SPI™ Serial  
Ports  
•
•
Differential Nonlinearity <0.5 LSB Typ  
Monotonic Over Temperature  
FK PACKAGE  
(TOP VIEW)  
APPLICATIONS  
•
•
•
•
•
Digital Servo Control Loops  
Digital Offset and Gain Adjustment  
Industrial Process Control  
Machine and Motion Control Devices  
Mass Storage Devices  
3
2
1
20 19  
NC  
SCLK  
NC  
NC  
4
5
6
7
8
18  
17  
16  
15  
14  
OUTB  
NC  
CS  
REF  
NC  
NC  
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, 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.  
Copyright © 1999–2004, Texas Instruments Incorporated  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
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