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參數資料
| 型號： | AD7898AR-3 |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | ADC |
| 英文描述： | 5 V, 12-Bit, Serial 220 kSPS ADC in an 8-Lead Package |
| 中文描述： | 1-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO8 |
| 封裝： | SOIC-8 |
| 文件頁數： | 1/16頁 |
| 文件大小： | 184K |
| 代理商： | AD7898AR-3 |
AD7898
a
REV. 0
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
5 V, 12-Bit, Serial 220 kSPS
ADC in an 8-Lead Package
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
World Wide Web Site: http://www.analog.com
Fax: 781/326-8703
Analog Devices, Inc., 2000
FUNCTIONAL BLOCK DIAGRAM
SIGNAL
SCALING
*
12-BIT
ADC
TRACK/HOLD
AD7898
V
DD
REF IN
V
IN
CONVST
GND
VDRIVE
SCLK
SDATA
*
AD7898-10, AD7898-3
OUTPUT
REGISTER
FEATURES
Fast 12-Bit ADC with 220 kSPS Throughput Rate
8-Lead SOIC
Single 5 V Supply Operation
High-Speed, Flexible, Serial Interface that Also
Allows Interfacing to 3 V Processors
On-Chip Track/Hold Amplifier
Selection of Input Ranges
10 V for AD7898-10
2.5 V for AD7898-3
High Input Impedance
Low Power: 22.5 mW Max
GENERAL DESCRIPTION
The AD7898 is a fast 12-bit ADC that operates from a single
5 V supply and is housed in a small 8-lead SOIC package. The
part contains a successive approximation A/D converter, an on-
chip track/hold amplifier, an on-chip clock, and a high-speed
serial interface.
The AD7898 offers two modes of operation. In Mode 0, con-
version is initiated by the
CONVST
input and the conversion
process is controlled by an internal clock oscillator. In this mode,
the serial interface consists of three wires and the AD7898 is
capable of throughput rates up to 220 kSPS. In Mode 1, the
conversion process is controlled by an externally-applied SCLK
with data being accessed from the part during conversion. In
this mode, the serial interface consists of three wires and the
AD7898 is capable of throughput rates up to 220 kSPS.
In addition to the traditional dc accuracy specifications such as
linearity and full-scale and offset errors, the AD7898 is specified
for dynamic performance parameters, including harmonic dis-
tortion and signal-to-noise ratio.
The part accepts an analog input range of
±
10 V (AD7898-10)
and
±
2.5 V (AD7898-3), and operates from a single 5 V supply,
consuming only 22.5 mW max.
The part is available in an 8-lead small outline IC (SOIC).
PRODUCT HIGHLIGHTS
1. Fast, 12-Bit ADC in 8-Lead Package
The AD7898 contains a 220 kSPS ADC, a track/hold ampli-
fier, control logic, and a high-speed serial interface, all in an
8-lead package. This offers considerable space saving over
alternative solutions.
2. Low Power, Single Supply Operation
The AD7898 operates from a single 5 V supply and con-
sumes only 22.5 mW. The V
DRIVE
function allows the serial
interface to connect directly to either 3 V or 5 V processor
systems independent of V
DD
.
3. Flexible, High-Speed Serial Interface
The part provides a flexible, high-speed serial interface that
has two distinct modes of operation. Mode 0 provides a three-
wire interface with data being accessed from the AD7898
when conversion is complete. Mode 1 offers a three-wire
interface with data being accessed during conversion.
4. Power-Down Mode
The AD7898 offers a proprietary power-down capability
when operated in Mode 1, making the part ideal for portable
or hand-held applications.
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相關代理商/技術參數 |
參數描述 |
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| AD7898AR-3REEL | 功能描述:IC ADC 12BIT SRL HS 5V 8-SOIC RoHS:否 類別:集成電路 (IC) >> 數據采集 - 模數轉換器 系列:- 標準包裝:1,000 系列:- 位數:16 采樣率（每秒）:45k 數據接口:串行 轉換器數目:2 功率耗散（最大）:315mW 電壓電源:模擬和數字 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應商設備封裝:28-SOIC W 包裝:帶卷 (TR) 輸入數目和類型:2 個單端，單極 |
| AD7898AR-3REEL7 | 功能描述:IC ADC 12BIT SRL HS 5V 8-SOIC RoHS:否 類別:集成電路 (IC) >> 數據采集 - 模數轉換器 系列:- 標準包裝:1,000 系列:- 位數:16 采樣率（每秒）:45k 數據接口:串行 轉換器數目:2 功率耗散（最大）:315mW 電壓電源:模擬和數字 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應商設備封裝:28-SOIC W 包裝:帶卷 (TR) 輸入數目和類型:2 個單端，單極 |
| AD7898ARZ-10 | 功能描述:IC ADC 12BIT SRL HS 5V 8-SOIC RoHS:是 類別:集成電路 (IC) >> 數據采集 - 模數轉換器 系列:- 標準包裝:1,000 系列:- 位數:16 采樣率（每秒）:45k 數據接口:串行 轉換器數目:2 功率耗散（最大）:315mW 電壓電源:模擬和數字 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應商設備封裝:28-SOIC W 包裝:帶卷 (TR) 輸入數目和類型:2 個單端，單極 |
| AD7898ARZ-10REEL | 功能描述:IC ADC 12BIT SRL HS 5V 8-SOIC RoHS:是 類別:集成電路 (IC) >> 數據采集 - 模數轉換器 系列:- 標準包裝:1,000 系列:- 位數:16 采樣率（每秒）:45k 數據接口:串行 轉換器數目:2 功率耗散（最大）:315mW 電壓電源:模擬和數字 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應商設備封裝:28-SOIC W 包裝:帶卷 (TR) 輸入數目和類型:2 個單端，單極 |
| AD7898ARZ-10REEL7 | 功能描述:IC ADC 12BIT SRL HS 5V 8-SOIC RoHS:是 類別:集成電路 (IC) >> 數據采集 - 模數轉換器 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:- 位數:12 采樣率（每秒）:3M 數據接口:- 轉換器數目:- 功率耗散（最大）:- 電壓電源:- 工作溫度:- 安裝類型:表面貼裝 封裝/外殼:SOT-23-6 供應商設備封裝:SOT-23-6 包裝:帶卷 (TR) 輸入數目和類型:- |
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