Datasheet

ADC1173
www.ti.com SNAS025F –FEBRUARY 1999–REVISED APRIL 2013
PIN DESCRIPTIONS AND EQUIVALENT CIRCUITS
Pin
Symbol Equivalent Circuit Description
No.
19 V
IN
Analog signal input. Conversion range is V
RB
to V
RT
.
Reference Top Bias with internal pull-up resistor. Short this
16 V
RTS
pin to V
RT
to self bias the reference ladder.
Analog Input that is the high (top) side of the reference ladder
of the ADC. Nominal range is 1.0V to AV
DD
. Voltage on V
RT
17 V
RT
and V
RB
inputs define the V
IN
conversion range. Bypass well.
For more information, see REFERENCE INPUTS.
Analog Input that is the low (bottom) side of the reference
ladder of the ADC. Nominal range is 0V to 2.0V. Voltage on
23 V
RB
V
RT
and V
RB
inputs define the V
IN
conversion range. Bypass
well. For more information, see REFERENCE INPUTS.
Reference Bottom Bias with internal pull down resistor. Short
22 V
RBS
to V
RB
to self bias the reference ladder.
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