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| 型號： | TPS65820RSHT |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 電源管理 |
| 英文描述： | 8-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC56 |
| 封裝： | 7 X 7 MM, GREEN, PLASTIC, QFN-56 |
| 文件頁數(shù)： | 64/98頁 |
| 文件大?。?/td> | 2290K |
| 代理商： | TPS65820RSHT |
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FUNCTIONALITY GUIDE – ANALOG TO DIGITAL CONVERTER
ANLG 1
ANLG 2
ADC _ REF
8 CHANNEL
MUX
A/D
CONVERTER
ADC
AGND 2
OUT
A 2
SYSTEMPOWERBUS
ADC
CONTROL
LOGIC
EXTERNAL ANALOG
INPUTVOLTAGE
6INTERNAL
CHANNELS
C17
4.7 F
m
ANALOG-TO-DIGITAL CONVERTER
Overview
Input Channels
www.ti.com .............................................................................................................................................................. SLVS663B – MAY 2006 – REVISED APRIL 2008
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
s,
50
s
s: 20, 40, 60, 80, 160,
ADC off
GPIB, I2C
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
Selectable via I2C
internally
I2C
via I2C
Figure 47. Required External Components, Recommended Values, External Connections
The TPS65820 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 I2C.
A dedicated set of I2C 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 I2C register ADC_SET bits CHSEL_SET bits:
Copyright 2006–2008, Texas Instruments Incorporated
67
Product Folder Link(s): TPS65820
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