參數(shù)資料
型號(hào)： AD7893AR2REEL
英文描述： Converter IC
中文描述： 轉(zhuǎn)換器IC
文件頁(yè)數(shù)： 1/20頁(yè)
文件大小： 191K
代理商： AD7893AR2REEL
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
AD7890
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., 2001
FUNCTIONAL BLOCK DIAGRAM
FEATURES
Fast 12-Bit ADC with 5.9 s Conversion Time
Eight Single-Ended Analog Input Channels
Selection of Input Ranges:
10 V for AD7890-10
0 V to 4.096 V for AD7890-4
0 V to 2.5 V for AD7890-2
Allows Separate Access to Multiplexer and ADC
On-Chip Track/Hold Amplifier
On-Chip Reference
High-Speed, Flexible, Serial Interface
Single Supply, Low-Power Operation (50 mW Max)
Power-Down Mode (75 W Typ)
TRACK/HOLD
2k
AD7890
C
EXT
CONVST
V
DD
MUX
OUT
SHA
IN
REF OUT/
REF IN
AGND AGND DGND
SCLK
TFS
RFS
DATA
OUT
DATA
IN
SMODE
V
IN8
V
IN7
V
IN6
V
IN5
V
IN4
V
IN3
V
IN2
V
IN1
CLK
IN
SIGNAL
SCALING
*
SIGNAL
SCALING
*
SIGNAL
SCALING
*
SIGNAL
SCALING
*
SIGNAL
SCALING
*
SIGNAL
SCALING
*
SIGNAL
SCALING
*
SIGNAL
SCALING
*
*
NO SCALING ON AD7890-2
CLOCK
OUTPUT/CONTROL REGISTER
12-BIT
ADC
MUX
2.5V
REFERENCE
Power dissipation in normal mode is low at 30 mW typ and the
part can be placed in a standby (power-down) mode if it is not
required to perform conversions. The AD7890 is fabricated in
Analog Devices’ Linear Compatible 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-lead, 0.3" wide, plastic or hermetic dual-in-line package or in
a 24-lead small outline package (SOIC).
PRODUCT HIGHLIGHTS
1. Complete 12-Bit Data Acquisition System-on-a-Chip
The AD7890 is a complete monolithic ADC combining an
eight-channel multiplexer, 12-bit ADC, 2.5 V reference and
a track/hold amplifier on a single chip.
2. Separate Access to Multiplexer and ADC
The AD7890 provides access to the output of the multiplexer
allowing one antialiasing filter for eight channels—a consid-
erable saving over the eight antialiasing filters required if the
multiplexer was internally connected to the ADC.
3. High-Speed Serial Interface
The part provides a high-speed serial interface for easy con-
nection to serial ports of microcontrollers and DSP processors.
GENERAL DESCRIPTION
The AD7890 is an eight-channel 12-bit data acquisition system.
The part contains an input multiplexer, an on-chip track/hold
amplifier, a high-speed 12-bit ADC, a 2.5 V reference and a
high speed, serial interface. The part operates from a single 5 V
supply and accepts an analog input range of
±
10 V (AD7890-10),
0 V to 4.096 V (AD7890-4) and 0 V to 2.5 V (AD7890-2).
The multiplexer on the part is independently accessible. This
allows the user to insert an antialiasing filter or signal conditioning,
if required, between the multiplexer and the ADC. This means
that one antialiasing filter can be used for all eight channels.
Connection of an external capacitor allows the user to adjust the
time given to the multiplexer settling to include any external
delays in the filter or signal conditioning circuitry.
Output data from the AD7890 is provided via a high-speed
bidirectional serial interface port. The part contains an on-chip
control register, allowing control of channel selection, conver-
sion start and power-down via the serial port. Versatile, high
speed logic ensures easy interfacing to serial ports on microcon-
trollers and digital signal processors.
In addition to the traditional dc accuracy specifications such as
linearity, full-scale and offset errors, the AD7890 is also speci-
fied for dynamic performance parameters including harmonic
distortion and signal-to-noise ratio.
LC
2
MOS 8-Channel, 12-Bit
Serial, Data Acquisition System
相關(guān)PDF資料
PDF描述
AD7893AR5REEL Converter IC
AD7893BR10REEL Ultralow Power Quad Comparators with Reference; Package: PDIP; No of Pins: 16; Temperature Range: 0°C to +70°C
AD7892SQ-2 Analog-to-Digital Converter??? 12-Bit
AD7893AN-3 Ultralow Power Single/Dual Comparator with Reference; Package: SO; No of Pins: 8; Temperature Range: 0°C to +70°C
AD7893BR2REEL Converter IC
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AD7893AR-2REEL 制造商:Analog Devices 功能描述:ADC Single SAR 117ksps 12-bit Serial 8-Pin SOIC N T/R 制造商:Analog Devices 功能描述:ADC SGL SAR 117KSPS 12-BIT SERL 8SOIC N - Tape and Reel
AD7893AR-2REEL7 功能描述:IC ADC 12BIT SRL T/H LP 8-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(biāo)準(zhǔn)包裝:1,000 系列:- 位數(shù):12 采樣率（每秒）:300k 數(shù)據(jù)接口:并聯(lián) 轉(zhuǎn)換器數(shù)目:1 功率耗散（最大）:75mW 電壓電源:單電源 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:24-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:24-SOIC 包裝:帶卷 (TR) 輸入數(shù)目和類型:1 個(gè)單端，單極；1 個(gè)單端，雙極
AD7893AR-3 制造商:Rochester Electronics LLC 功能描述:12-BIT ADC, 8 PIN I.C. - Bulk 制造商:Analog Devices 功能描述:
AD7893AR-5 制造商:Analog Devices 功能描述:ADC Single SAR 117ksps 12-bit Serial 8-Pin SOIC N 制造商:Rochester Electronics LLC 功能描述:12-BIT ADC,8 PIN I.C. - Bulk 制造商:Analog Devices 功能描述:IC 12-BIT ADC
AD7893AR-5REEL 制造商:Analog Devices 功能描述:ADC Single SAR 117ksps 12-bit Serial 8-Pin SOIC N T/R 制造商:Analog Devices 功能描述:ADC SGL SAR 117KSPS 12-BIT SERL 8SOIC N - Tape and Reel
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*