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參數資料
| 型號： | DEM-ADS7864 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | ADC EVALUATION BOARD(ADC評估板) |
| 中文描述： | ADC的評估板（ADC的評估板） |
| 文件頁數： | 8/32頁 |
| 文件大?。?/td> | 1878K |
| 代理商： | DEM-ADS7864 |
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Introduction
1-2
1.1
Introduction
The ADS7864 is a high speed, low power, dual 12-bit A/D converter that
operates from a single 5-V supply. The input channels are fully
differential with a typical common-mode rejection of 80 dB. The part
contains dual 2-
μ
s successive approximation ADCs, six differential
sample-and-hold amplifiers, an internal 2.5-V reference with REF
IN
and REF
OUT
pins and a high-speed parallel interface.
There are six analog inputs that are grouped into three channels (A, B
and C). Each A/D converter has three inputs (A0, B0, C0 or A1, B1, C1)
that can be sampled and converted simultaneously. This preserves the
relative phase information of the signals on the analog inputs. Each pair
of channels has a hold signal (HOLDA, HOLDB, and HOLDC) that
when strobed together, allows simultaneous sampling on all 6
channels. The part accepts an analog input voltage in the range of
–
V
REF
to +V
REF
,
centered on the internal 2.5-V reference. The part will
also accept bipolar input ranges when a level shift circuit is used in the
analog front-end circuitry (see Figure 1
–
1).
Conversion time for the ADS7864 is 1.75
μ
s when an 8-MHz external
clock is used. The corresponding acquisition time is 0.25
μ
s. To achieve
maximum output rate (500 kHz), the read function can be performed
during the start of the next conversion.
The evaluation board provides analog input flexibility, permitting
evaluation of the user
’
s own application. The digital interface of the
DEM-ADS7864 provides direct connection to the computer interface
board (CIB), allowing the user to evaluate device performance with the
BBEval
software.
In the factory default configuration, a 5-V analog and 5-V digital supply
are required for proper operation of the DEM-ADS7864 board. The
analog buffer amplifiers are socketed, allowing the user to easily
change input configurations. The input power circuit can be modified
to allow up to
±
15-V analog supply operation.
1.2
Features
Full-featured evaluation board for the ADS7864 500 kHz, 12-Bit,
6-channel simultaneous sampling analog to digital converter
Operates with a single 5-V power supply
—
can be configured for
±
15 V
operation
Accepts wide range of operational amplifiers in different configurations
Direct interface to CIB board
High-speed parallel interface to the PC
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相關代理商/技術參數 |
參數描述 |
|---|---|
| DEM-ADS7870 | 功能描述:DEMO BOARD FOR ADS7870 RoHS:是 類別:編程器，開發系統 >> 評估板 - 模數轉換器 (ADC) 系列:- 產品培訓模塊:Obsolescence Mitigation Program 標準包裝:1 系列:- ADC 的數量:1 位數:12 采樣率（每秒）:94.4k 數據接口:USB 輸入范圍:±VREF/2 在以下條件下的電源（標準）:- 工作溫度:-40°C ~ 85°C 已用 IC / 零件:MAX11645 已供物品:板，軟件 |
| DEM-ADS78DIP | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:DEM-ADS78DIP - EVALUATION FIXTURE |
| DEM-ADS807E | 功能描述:數據轉換 IC 開發工具 Demo Fixture RoHS:否 制造商:Texas Instruments 產品:Demonstration Kits 類型:ADC 工具用于評估:ADS130E08 接口類型:SPI 工作電源電壓:- 6 V to + 6 V |
| DEM-ADS80XU | 制造商:Texas Instruments 功能描述:DEMO BRD-ADS803/4/5 - Bulk |
| DEM-ADS822E | 功能描述:數據轉換 IC 開發工具 ADS82XE Eval Fixture RoHS:否 制造商:Texas Instruments 產品:Demonstration Kits 類型:ADC 工具用于評估:ADS130E08 接口類型:SPI 工作電源電壓:- 6 V to + 6 V |
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