BUF20800-Q1 Datasheet, PDF (22/32 Pages) Texas Instruments – 18-CHANNEL GAMMA VOLTAGE GENERATOR WITH TWO PROGRAMMABLE VCOM CHANNELS

BUF20800-Q1
SBOS571 – AUGUST 2011
Voltage
Output
High Current
Voltage Output
0.3V to17V
2V to 16V, 100mA
Control Loop
Set Point
420 mA
420 mA
Generator
+18V
+5V
BU F 2 0 8 0 0 - Q 1
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+5V
Sensor Excitation/Linearization
+5V
+2.5V Bias
Bias Voltage
Generator
Offset
Adjustment
Comparator
Threshold
Reference
for MDAC
INA
Ref
Ref
MDAC
SDA SCL
mC
LED Driver
+4.3V
+7.5 V
+4V
Supply Voltage
Generator
Figure 18. Industrial Applications for the BUF20800-Q1
EVALUATION BOARD AND SOFTWARE
An evaluation board is available for the BUF20800-Q1. The evaluation board features easy-to-use software that
allows individual channel voltages to be set (see Figure 19). Configurations can be quickly evaluated to
determine optimal codes for a given application. Contact your local TI representative for more information
regarding the evaluation board.
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