Datasheet
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FUNCTIONALITY GUIDE – ANALOG TO DIGITAL CONVERTER
ANLG1
ANLG2
ADC _ REF
8 CHANNEL
MUX
A/D
CONVERTER
ADC
AGND 2
OUT
A 2
A 2
SYSTEMPOWERBUS
ADC
CONTROL
LOGIC
EXTERNAL ANALOG
INPUTVOLTAGE
6INTERNAL
CHANNELS
C17
4.7 Fm
ANALOG-TO-DIGITAL CONVERTER
Overview
Input Channels
TPS65810
TPS65811
SLVS658B – MARCH 2006 – REVISED FEBRUARY 2007
10 BIT SUCCESSIVE APPROXIMATION ADC
ADC Input Channels Trigger Mode Conversion Converter Mode Trigger Delay Wait Time, Multiple Power Up
Count Conversions Default
Internal External Range Min Step
Charge ANLG1 and 1, 4, 8, 16, 32, Single, Average, 0-750 µ s, 50 µ s µ s: 20, 40, 60, 80, 160, ADC off
GPIB, I
2
C
Current, ANLG2 64, 128, 256 Find max value, 16 steps 240, 320, 640
driven, Repeat
Thermistor voltages Find min value
ms: 1.28, 1.92, 2.56,
temperature,
5.12, 10.24, 15.36, 20.48
IC junction
temperature,
RTC_OUT
voltage, OUT
voltage,
Battery
voltage
Fixed Selectable via Selectable via Selectable via Selectable via Selectable Selectable
Selectable via I
2
C
internally
I
2
C I
2
C I
2
C I
2
C via I
2
C via I
2
C
Figure 46. Required External Components, Recommended Values, External Connections
The TPS65810 has a 10 bit integrated successive approximation A/D, capable of running A/D conversions on
eight distinct channels in a variety of modes. Two of the eight channels are connected to uncommitted pins
ANLG1 and ANLG2, and can be used to convert external voltages. The other six channels monitor system
parameters which are critical to the overall system monitoring. The channel selection is set via I
2
C.
A dedicated set of I
2
C registers enables configuration of the ADC to perform a conversion cycle with either a
single conversion or a multiple conversions. The ALU generates a data set containing maximum value detection,
minimum value detection and average value calculation for each conversion cycle. Each cycle can be performed
a single time or multiple times.
The following channels are available for selection via the I
2
C register ADC_SET bits CHSEL_SET bits:
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