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參數(shù)資料
| 型號： | AD7863AR-10 |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | ADC |
| 英文描述： | RECTIFIER SCHOTTKY DUAL 30A 30V 275A-ifsm 0.55V-vf 1mA-ir TO-3P 30/TUBE |
| 中文描述： | 4-CH 14-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PDSO28 |
| 封裝： | MS-013AE, SOIC-28 |
| 文件頁數(shù)： | 1/18頁 |
| 文件大?。?/td> | 207K |
| 代理商： | AD7863AR-10 |
REV. A
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.
a
AD7863
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., 1999
Simultaneous Sampling
Dual 175 kSPS 14-Bit ADC
FUNCTIONAL BLOCK DIAGRAM
DGND
DB0
BUSY
CS
CONVST
AD7863
AGND
V
REF
2k
AGND
TRACK/
HOLD
V
DD
DB13
A0
14-BIT
ADC
TRACK/
HOLD
MUX
SIGNAL
SCALING
+2.5V
REFERENCE
OUTPUT
LATCH
RD
CONVERSION
CONTROL LOGIC
SIGNAL
SCALING
SIGNAL
SCALING
SIGNAL
SCALING
MUX
14-BIT
ADC
CLOCK
V
A1
V
B1
V
A2
V
B2
FEATURES
Two Fast 14-Bit ADCs
Four Input Channels
Simultaneous Sampling and Conversion
5.2 s Conversion Time
Single Supply Operation
Selection of Input Ranges
10 V for AD7863-10
2.5 V for AD7863-3
0 V to 2.5 V for AD7863-2
High Speed Parallel Interface
Low Power, 70 mW Typ
Power Saving Mode, 105 W Max
Overvoltage Protection on Analog Inputs
14-Bit Lead Compatible Upgrade to AD7862
APPLICATIONS
AC Motor Control
Uninterrupted Power Supplies
Data Acquisition Systems
Communications
GENERAL DESCRIPTION
The AD7863 is a high speed, low power, dual 14-bit A/D con-
verter that operates from a single +5 V supply. The part contains
two 5.2
μ
s successive approximation ADCs, two track/hold amplifi-
ers, an internal +2.5 V reference and a high speed parallel inter-
face. Four analog inputs are grouped into two channels (A and
B) selected by the A0 input. Each channel has two inputs (V
A1
and V
A2
or V
B1
and V
B2
), which can be sampled and converted
simultaneously thus preserving the relative phase information of
the signals on both analog inputs. The part accepts an analog
input range of
±
10 V (AD7863-10),
±
2.5 V (AD7863-3) and
0 V
–
2.5 V (AD7863-2). Overvoltage protection on the analog
inputs for the part allows the input voltage to go to
±
17 V,
±
7 V
or +7 V respectively, without causing damage.
A single conversion start signal (
CONVST
) simultaneously
places both track/holds into hold and initiates conversion on
both channels. The BUSY signal indicates the end of conversion
and at this time the conversion results for both channels are
available to be read. The first read after a conversion accesses
the result from V
A1
or V
B1
, while the second read accesses the
result from V
A2
or V
B2
, depending on whether the multiplexer
select A0 is low or high respectively. Data is read from the part
via a 14-bit parallel data bus with standard
CS
and
RD
signals.
In addition to the traditional dc accuracy specifications such as
linearity, gain and offset errors, the part is also specified for
dynamic performance parameters including harmonic distortion
and signal-to-noise ratio.
The AD7863 is fabricated in Analog Devices
’
Linear Compat-
ible CMOS (LC
2
MOS) process, a mixed technology process
that combines precision bipolar circuits with low power CMOS
logic. It is available in 28-lead SOIC and SSOP.
PRODUCT HIGHLIGHTS
1. The AD7863 features two complete ADC functions allowing
simultaneous sampling and conversion of two channels.
Each ADC has a two-channel input mux. The conversion
result for both channels is available 5.2
μ
s after initiating
conversion.
2. The AD7863 operates from a single +5 V supply and
consumes 70 mW typ. The automatic power-down mode,
where the part goes into power down once conversion is
complete and
“
wakes up
”
before the next conversion cycle,
makes the AD7863 ideal for battery-powered or portable
applications.
3. The part offers a high speed parallel interface for easy
connection to microprocessors, microcontrollers and digital
signal processors.
4. The part is offered in three versions with different analog
input ranges. The AD7863-10 offers the standard industrial
input range of
±
10 V; the AD7863-3 offers the common
signal processing input range of
±
2.5 V, while the AD7863-2
can be used in unipolar 0 V
–
2.5 V applications.
5. The part features very tight aperture delay matching between
the two input sample and hold amplifiers.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AD7863BR-10 | RECTIFIER FAST-RECOVERY SINGLE 1A 400V 30A-ifsm 1.3V-vf 50ns 5uA-ir DO-41 1K/BULK |
| AD7863BR-3 | RECTIFIER FAST-RECOVERY SINGLE 1A 600V 30A-ifsm 1.7V-vf 75ns 5uA-ir DO-41 1K/BULK |
| AD7863ARS-10 | Simultaneous Sampling Dual 175 kSPS 14-Bit ADC |
| AD7863ARS-2 | Simultaneous Sampling Dual 175 kSPS 14-Bit ADC |
| AD7863ARS-3 | Simultaneous Sampling Dual 175 kSPS 14-Bit ADC |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD7863AR-10REEL | 功能描述:IC ADC 14BIT DUAL 2CH 28-SOIC RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標準包裝:1 系列:- 位數(shù):14 采樣率（每秒）:83k 數(shù)據(jù)接口:串行，并聯(lián) 轉(zhuǎn)換器數(shù)目:1 功率耗散（最大）:95mW 電壓電源:雙 ± 工作溫度:0°C ~ 70°C 安裝類型:通孔 封裝/外殼:28-DIP（0.600"，15.24mm） 供應(yīng)商設(shè)備封裝:28-PDIP 包裝:管件 輸入數(shù)目和類型:1 個單端，雙極 |
| AD7863AR-10REEL7 | 制造商:Analog Devices 功能描述:ADC Dual SAR 175ksps 14-bit Parallel 28-Pin SOIC W T/R |
| AD7863AR-2 | 功能描述:IC ADC 14BIT DUAL 2CH 28-SOIC RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:- 位數(shù):12 采樣率（每秒）:3M 數(shù)據(jù)接口:- 轉(zhuǎn)換器數(shù)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(yīng)商設(shè)備封裝:SOT-23-6 包裝:帶卷 (TR) 輸入數(shù)目和類型:- |
| AD7863AR-2REEL | 制造商:Analog Devices 功能描述:ADC Dual SAR 175ksps 14-bit Parallel 28-Pin SOIC W T/R |
| AD7863AR-2REEL7 | 功能描述:IC ADC 14BIT DUAL 2CH 28-SOIC RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:- 位數(shù):12 采樣率（每秒）:3M 數(shù)據(jù)接口:- 轉(zhuǎn)換器數(shù)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(yīng)商設(shè)備封裝:SOT-23-6 包裝:帶卷 (TR) 輸入數(shù)目和類型:- |
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