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...
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 DIN NC VDD NC
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
NC OUTA
NC AGND
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 overa...
