BUF01900 Datasheet, PDF (1/25 Pages) Texas Instruments – Programmable Voltage Source with Memory

BUF01900
BUF01901
SBOS337A − OCTOBER 2006 − REVISED OCTOBER 2006
Programmable Voltage Source
with Memory
FEATURES
D 10-BIT RESOLUTION
D RAIL-TO-RAIL OUTPUT
D ONBOARD NONVOLATILE MEMORY
D I_OUT: 100mA
D LOW SUPPLY CURRENT: 900µA
D SUPPLY VOLTAGE: 7V to 18V
D DIGITAL SUPPLY: 2.0V to 5.5V
D INDUSTRY-STANDARD, TWO-WIRE
INTERFACE
D HIGH ESD RATING:
2kV HBM, 500V CDM
APPLICATIONS
D LCD PANEL V_COM CALIBRATION
D LCD PANEL BRIGHTNESS AND CONTRAST
CONTROL
D POTENTIOMETER REPLACEMENT
D MOTOR DRIVE
D PROGRAMMABLE POWER SUPPLY
D PROGRAMMABLE OFFSET ADJUSTMENT
D ACTUATOR CONTROL
DESCRIPTION
The BUF01900 and BUF01901 provide a programmable
voltage output with 10-bit resolution. Programming of the
output occurs through an industry-standard, two-wire
serial interface. Once the correct V_COM voltage is
established it can easily be stored into the integrated
nonvolatile memory.
An initial output voltage and adjustment range can be set
by an external resistor-divider. With its large output current
capability (up to 100mA), the BUF01900 and BUF01901
are ideally suited as programmable V_COM calibrators in
LCD panels.
The BUF01901 has the digital-to-analog converter (DAC)
output brought out directly. It has a slightly lower cost than
the BUF01900, and works very well with the integrated
V_COM in traditional gamma buffers such as the BUFxx702,
BUFxx703, BUFxx704 and BUF11705.
The BUF01900 and BUF01901 are both available in
TSSOP-8 and 3mm x 3mm DFN-10 packages. The
DFN-10 package (only 0.9mm in height) is especially
well-suited for notebook computers. Both devices are
specified from −40°C to +85°C.
Digital
2V to 5.5V
Analog
7V to 18V
BIAS
BUF01900
Voltage
Regulator
BUF01900, BUF01901 RELATED PRODUCTS
FEATURES
22V High Supply Voltage Gamma Buffers
12--Channel Programmable Buffer, 10-Bit, V_COM
20-Channel Programmable Buffer, 10-Bit, V_COM
16-Channel Programmable Buffer with Memory
20-Channel Programmable Buffer with Memory
PRODUCT
BUF11705
BUF12800
BUF20800
BUF16820
BUF20820
4 x OTP Switch
ROM Control
10−Bit
DAC
250kΩ
Buffer
V_COM
Input Control Logic
SDA SCL A0
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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.
Copyright  2006, Texas Instruments Incorporated
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