221 Zero and Full-Scale Adjustments

To calibrate the bipolar output circuit three adjustments are

required The first step is to set all of the digital inputs LOW

setting the voltage at its inverting input (pin 2) to zero volts

eal

opposite that of the applied reference Finally set all of the

2047

2048

The polarity of the output will be the same as that of the

reference voltage

30 APPLICATION IDEAS

In this section the digital input word is represented by the

letter D and is equal to the decimal equivalent of the 12-bit

binary input Hence D can be any integer value between 0

and 4095

Composite Amplifier for Good DC Characteristics and Fast Output Response

bias current of the

LM11 with the fast

response of the LF351

8 mS

for a zero to full-

scale transition

High Voltage Power DAC

b

4096

R2

a

R2

R1

(

TLH5690 – 17

14