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| 型號(hào)： | AD7870A |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | Complete, 12-Bit, 100 kHz , Sampling ADC(完備的,頻率為100kHz,12位A/D轉(zhuǎn)換器) |
| 中文描述： | 完整的，12位，100千赫采樣ADC（完備的，頻率為100kHz的12位的A / D轉(zhuǎn)換器） |
| 文件頁(yè)數(shù)： | 1/12頁(yè) |
| 文件大小： | 263K |
| 代理商： | AD7870A |
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.
a
AD7870A
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
LC
2
MOS
Complete, 12-Bit, 100 kHz , Sampling ADC
FUNCTIONAL BLOCK DIAGRAM
FEATURES
Complete Monolithic 12-Bit ADC with:
2
m
s Track/Hold Amplifier
8
m
s A/D Converter
On-Chip Reference
Laser-Trimmed Clock
Parallel, Byte and Serial Digital Interface
70 dB SNR at 10 kHz Input Frequency
57 ns Data Access Time
Low Power—60 mW typ
APPLICATIONS
Digital Signal Processing
Speech Recognition and Synthesis
Spectrum Analysis
High Speed Modems
DSP Servo Control
GENERAL DESCRIPTION
The AD7870A is a fast, complete, 12-bit A/D converter. It con-
sists of a track/hold amplifier, 8
μ
s successive approximation
ADC, 3 V buried Zener reference and versatile interface logic.
The ADC features a self-contained internal clock that is laser
trimmed to guarantee accurate control of conversion time. No
external clock timing components are required; the on-chip
clock may be overridden by an external clock if required.
AD7870A offers a choice of three data output formats: a single,
parallel, 12-bit word, two 8-bit bytes or serial data. Fast bus
access times and standard control inputs ensure easy interfacing
to modern microprocessors and digital signal processors.
The AD7870A operates from
±
5 V power supplies, accepts
bipolar input signals of
±
3 V and can convert full power signals
up to 50 kHz.
In addition to the traditional dc accuracy specifications such as
linearity, full-scale and offset errors, the AD7870A is also fully
specified for dynamic performance parameters including har-
monic distortion and signal-to-noise ratio.
The AD7870A is fabricated in Analog Devices’ linear compati-
ble CMOS (LC
2
MOS) process, a mixed technology process that
combines precision bipolar circuits with low power CMOS logic.
The part is available in a 24-pin, 0.3-inch wide, plastic dual in-
line package (DIP).
PRODUCT HIGHLIGHTS
1. Complete 12-bit ADC on a chip.
The AD7870A is the most complete monolithic ADC avail-
able and combines a 12-bit ADC with internal clock, track/
hold amplifier and reference on a single chip.
2. Dynamic specifications for DSP users.
The AD7870A is fully specified and tested 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 temperature
range.
3. Fast microprocessor interface.
Data access times of 57 ns make the AD7870A compatible
with modern 8- and 16-bit microprocessors and digital signal
processors.
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| AD7870CQ | LC2MOS Complete, 12-Bit, 100 kHz, Sampling ADCs |
| AD7870JN | 12-Bit, 53 MSPS ADC SE/Diff imputs w/range of 2 to 3Vpp, Int/Ext Ref., Out of Range Indicator 28-SSOP -40 to 85 |
| AD7870JP | LC2MOS Complete, 12-Bit, 100 kHz, Sampling ADCs |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD7870AJN | 制造商:Analog Devices 功能描述:ADC Single SAR 100ksps 12-bit Parallel/Serial 24-Pin PDIP 制造商:Rochester Electronics LLC 功能描述:12-BIT SAMPLING ADC IC - Bulk |
| AD7870AJNZ | 功能描述:IC ADC 12BIT SAMPLING 3V 24-DIP RoHS:是 類(lèi)別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)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(lèi)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(lèi)型:1 個(gè)單端，雙極 |
| AD7870AQ | 功能描述:IC ADC 12BIT SAMPLING 3V 24-CDIP RoHS:否 類(lèi)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(biāo)準(zhǔn)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(lèi)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(lèi)型:- |
| AD7870BQ | 功能描述:IC ADC 12BIT SAMPLING 3V 24-CDIP RoHS:否 類(lèi)別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)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(lèi)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(lèi)型:1 個(gè)單端，雙極 |
| AD7870CQ | 功能描述:IC ADC 12BIT SAMPLING 3V 24-CDIP RoHS:否 類(lèi)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(biāo)準(zhǔn)包裝:250 系列:- 位數(shù):12 采樣率（每秒）:1.8M 數(shù)據(jù)接口:并聯(lián) 轉(zhuǎn)換器數(shù)目:1 功率耗散（最大）:1.82W 電壓電源:模擬和數(shù)字 工作溫度:-40°C ~ 85°C 安裝類(lèi)型:表面貼裝 封裝/外殼:48-LQFP 供應(yīng)商設(shè)備封裝:48-LQFP（7x7） 包裝:管件 輸入數(shù)目和類(lèi)型:2 個(gè)單端，單極 |
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