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參數資料
型號: AD7886JD
廠商: ANALOG DEVICES INC
元件分類: ADC
英文描述: LC2MOS 12-Bit, 750 kHz/1 MHz, Sampling ADC
中文描述: 1-CH 12-BIT FLASH METHOD ADC, PARALLEL ACCESS, CDIP28
封裝: SIDE BRAZED, CERAMIC, DIP-28
文件頁數: 1/16頁
文件大小: 400K
代理商: AD7886JD
LC
2
MOS
12-Bit, 750 kHz/1 MHz, Sampling ADC
FUNCTIONAL BLOCK DIAGRAM
SEGMENT SELECT
CLOCK
OSCILLATOR
AND TIMER
CONTROL
TIMER
AD7886
CS
RD
CONVST
V
DD
BUSY
DB11
DB0
DGND
V
SS
VIN1
+
T/H
VIN2
+5REF
SUM
AGND
R3
R4
R5
R1
9k
R2
6.3k
4-BIT
LATCH
THREE
STATE
OUTPUTS
4-BIT
LATCH
4-BIT
LATCH
4096
RESISTOR
DAC
15
COMPARATORS
AND
4-BIT FLASH
LOGIC
10k
10k
3.5k
V
REF
FEATURES
750 kHz/1 MHz Throughput Rate
1
m
s/750 ns Conversion Time
12-Bit No Missed Codes Over Temperature
67 dB SNR at 100 kHz Input Frequency
Low Power—250 mW typ
Fast Bus Access Time—57 ns max
APPLICATIONS
Digital Signal Processing
Speech Recognition and Synthesis
Spectrum Analysis
DSP Servo Control
GENERAL DESCRIPTION
The AD7886 is a 12-bit ADC with a sample-and-hold amplifier
offering high speed performance combined with low power dissi-
pation. The AD7886 is a triple pass flash ADC that uses 15
comparators in a 4-bit flash technique to achieve 12-bit accuracy
in 1
μ
s/750 ns conversion time. An on-chip clock oscillator pro-
vides the appropriate timing for each of the three conversion
stages, eliminating the need for any external clocks. Acquisition
time of the sample-and-hold amplifier gives a resulting through-
put rate of 750 kHz/1 MHz.*
The AD7886 operates from
±
5 V power supplies. Pin-strappable
inputs offer a choice of three analog input ranges: 0 V to 5 V,
0 V to 10 V or
±
5 V.
In addition to the traditional dc accuracy specifications such as
linearity, offset and full-scale errors, the AD7886 is also speci-
fied for dynamic performance parameters, including harmonic
distortion and signal-to-noise ratio.
The AD7886 has a high speed digital interface with three-state
data outputs. Conversion control is provided by a
CONVST
in-
put. Data access is controlled by
CS
and
RD
inputs, standard
microprocessor signals. The data access time of less than 57 ns
means that the AD7886 can interface directly to most modern
microprocessors, including DSP processors.
*Contact your local salesperson for further information on the 1 MHz
version.
The AD7886 is fabricated in Analog Devices’ Linear Com-
patible CMOS process, a mixed technology process that
combines precision bipolar circuits with low power CMOS
logic.
The AD7886 is available in both a 28-pin DIP and a 28-pin
leaded chip carrier.
PRODUCT HIGHLIGHTS
1. Fast 1.33
μ
s/1
μ
s Throughput Time.
Fast throughput time makes the AD7886 suitable for a
wide range of data acquisition applications.
2. Dynamic Specifications for DSP Users.
The AD7886 is specified for ac parameters, including
signal-to-noise ratio, harmonic distortion and inter-
modulation distortion. Key digital timing parameters are
also tested and guaranteed over the full operating tem-
perature range.
3. Fast Microprocessor Interface.
Standard control signals,
CS
and
RD
, and fast bus ac-
cess times make the AD7886 easy to interface to micro-
processors.
4. Low Power.
LC
2
MOS fabrication process gives low power dissipa-
tion of 250 mW.
REV. B
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
AD7886
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 617/329-4700
World Wide Web Site: http://www.analog.com
Fax: 617/326-8703
Analog Devices, Inc., 1997
相關PDF資料
PDF描述
AD7887 +2.7 V to +5.25 V, Micropower, 2-Channel, 125 kSPS, 12-Bit ADC in 8-Lead uSOIC
AD7887AR +2.7 V to +5.25 V, Micropower, 2-Channel, 125 kSPS, 12-Bit ADC in 8-Lead uSOIC
AD7887ARM +2.7 V to +5.25 V, Micropower, 2-Channel, 125 kSPS, 12-Bit ADC in 8-Lead uSOIC
AD7887BR +2.7 V to +5.25 V, Micropower, 2-Channel, 125 kSPS, 12-Bit ADC in 8-Lead uSOIC
AD7888(中文) 2.7 V to 5.25 V, Micro Power, 8-Channel,125kSPS,12-Bit ADC(微功耗,125kSPS,8通道12位A/D轉換器)
相關代理商/技術參數
參數描述
AD7886JP 功能描述:IC ADC 12BIT SAMPLING HS 28-PLCC 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 系列:- 位數:14 采樣率(每秒):83k 數據接口:串行,并聯 轉換器數目: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) 供應商設備封裝:28-PDIP 包裝:管件 輸入數目和類型:1 個單端,雙極
AD7886JP-REEL 功能描述:IC ADC 12BIT SAMPLING HS 28-PLCC 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 系列:- 位數:14 采樣率(每秒):83k 數據接口:串行,并聯 轉換器數目: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) 供應商設備封裝:28-PDIP 包裝:管件 輸入數目和類型:1 個單端,雙極
AD7886KP-REEL 制造商:Analog Devices 功能描述:
AD7887AR 功能描述:IC ADC 12BIT 2CH SRL 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
AD7887ARM 功能描述:IC ADC 12BIT 2CH SRL 8-MSOP 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
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