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| 型号： | EVAL-ADUC7122QSPZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 20/96页 |
| 文件大小： | 0K |
| 描述： | BOARD EVALUATION FOR ADUC7122 |
| 设计资源： | EVAL-ADUC7122 Schematic ADUC7122 Gerber Files ADUC7122 BOM |
| 标准包装： | 1 |
| 系列： | MicroConverter® ADuC7xxx |
| 类型： | MCU |
| 适用于相关产品： | ADUC7122 |
| 所含物品： | 板 |
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ADuC7122
Rev. 0 | Page 27 of 96
ADC CIRCUIT OVERVIEW
The analog-to-digital converter (ADC) incorporates a fast,
multichannel, 12-bit ADC. It can operate from 3.0 V to 3.6 V
supplies and is capable of providing a throughput of up to 1 MSPS
when the clock source is 41.78 MHz. This block provides the
user with a multichannel multiplexer, differential track-and-
hold, on-chip reference, and ADC.
The ADC consists of a 12-bit successive approximation converter
based around two capacitor DACs. Depending on the input
signal configuration, the ADC can operate in one of the
following three modes:
Fully differential mode for small and balanced signals
Single-ended mode for any single-ended signals
Pseudo differential mode for any single-ended signals,
taking advantage of the common-mode rejection offered
by the pseudo differential input
The converter accepts an analog input range of 0 to VREF when
operating in single-ended mode or pseudo differential mode. In
fully differential mode, the input signal must be balanced around
a common-mode voltage, VCM, in the range 0 V to AVDD, and
AVDD
VCM
0
2VREF
0
87
55
-01
2
Figure 12. Examples of Balanced Signals for Fully Differential Mode
A high precision, low drift, and factory-calibrated 2.5 V reference
is provided on chip. An external reference can also be connected
as described in the Band Gap Reference section.
Single or continuous conversion modes can be initiated in
software. An external CONVST pin, an output generated from
the on-chip PLA, or a Timer0 or Timer1 overflow can also be
used to generate a repetitive trigger for ADC conversions.
If the signal has not been deasserted by the time the ADC
conversion is complete, a second conversion begins
automatically.
A voltage output from an on-chip band gap reference propor-
tional to absolute temperature can also be routed through the
front-end ADC multiplexer, effectively an additional ADC
channel input. This facilitates an internal temperature sensor
channel, measuring die temperature to an accuracy of 3C.
For the ADuC7122, a number of modifications have been made
to the ADC input structure that appears in the ADuC702x
family.
The PADC0 and PADC1 inputs connect to a PGA in pseudo
differential mode and allow for selectable gains from 1 to 5 with
32 steps. The remaining ADC channels can be configured as
single, differential, or pseudo differential. A buffer is provided
before the ADC for measuring internal channels.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| EVAL-ADUC7124QSPZ | 功能描述:BOARD EVALUATION FOR ADUC7124 RoHS:是 类别:编程器，开发系统 >> 通用嵌入式开发板和套件（MCU、DSP、FPGA、CPLD等） 系列:MicroConverter® ADuC7xxx 标准包装:1 系列:PICDEM™ 类型:MCU 适用于相关产品:PIC10F206，PIC16F690，PIC16F819 所含物品:板，线缆，元件，CD，PICkit 编程器 产品目录页面:659 (CN2011-ZH PDF) |
| EVAL-ADUC7126QSPZ | 功能描述:BOARD EVALUATION FOR ADUC7126 RoHS:是 类别:编程器，开发系统 >> 通用嵌入式开发板和套件（MCU、DSP、FPGA、CPLD等） 系列:MicroConverter® ADuC7xxx 标准包装:1 系列:PICDEM™ 类型:MCU 适用于相关产品:PIC10F206，PIC16F690，PIC16F819 所含物品:板，线缆，元件，CD，PICkit 编程器 产品目录页面:659 (CN2011-ZH PDF) |
| EVAL-ADUC7128QSPZ | 功能描述:KIT DEV FOR ADUC7128 RoHS:是 类别:编程器，开发系统 >> 通用嵌入式开发板和套件（MCU、DSP、FPGA、CPLD等） 系列:QuickStart™ PLUS 套件 产品培训模块:Blackfin® Processor Core Architecture Overview Blackfin® Device Drivers Blackfin® Optimizations for Performance and Power Consumption Blackfin® System Services 特色产品:Blackfin? BF50x Series Processors 标准包装:1 系列:Blackfin® 类型:DSP 适用于相关产品:ADSP-BF548 所含物品:板，软件，4x4 键盘，光学拨轮，QVGA 触摸屏 LCD 和 40G 硬盘 配用:ADZS-BFBLUET-EZEXT-ND - EZ-EXTENDER DAUGHTERBOARDADZS-BFLLCD-EZEXT-ND - BOARD EXT LANDSCAP LCD INTERFACE 相关产品:ADSP-BF542BBCZ-4A-ND - IC DSP 16BIT 400MHZ 400CSBGAADSP-BF544MBBCZ-5M-ND - IC DSP 16BIT 533MHZ MDDR 400CBGAADSP-BF542MBBCZ-5M-ND - IC DSP 16BIT 533MHZ MDDR 400CBGAADSP-BF542KBCZ-6A-ND - IC DSP 16BIT 600MHZ 400CSBGAADSP-BF547MBBCZ-5M-ND - IC DSP 16BIT 533MHZ MDDR 400CBGAADSP-BF548BBCZ-5A-ND - IC DSP 16BIT 533MHZ 400CSBGAADSP-BF547BBCZ-5A-ND - IC DSP 16BIT 533MHZ 400CSBGAADSP-BF544BBCZ-5A-ND - IC DSP 16BIT 533MHZ 400CSBGAADSP-BF542BBCZ-5A-ND - IC DSP 16BIT 533MHZ 400CSBGA |
| EVAL-ADUC7128QSPZ2 | 制造商:AD 制造商全称:Analog Devices 功能描述:Precision Analog Microcontroller ARM7TDMI MCU with 12-Bit ADC and DDS DAC |
| EVAL-ADUC7129QSPZ | 制造商:Analog Devices 功能描述:- Bulk |
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