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參數資料
型號: AD7887
廠商: Analog Devices, Inc.
英文描述: +2.7 V to +5.25 V, Micropower, 2-Channel, 125 kSPS, 12-Bit ADC in 8-Lead uSOIC
中文描述: 2.7 V至5.25 V,微功耗,2通道,125 kSPS的,12位ADC的8引腳uSOIC
文件頁數: 1/16頁
文件大小: 133K
代理商: AD7887
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
AD7887
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
+2.7 V to +5.25 V Mcropower, 2-Channel,
125 kSPS, 12-Bit ADC in 8-Lead
m
SOC
FUNCT IONAL BLOCK DIAGRAM
SAR + ADC
CONTROL LOGIC
GND
AIN0
SCLK
DOUT
DIN
V
DD
AD7887
CS
T/H
I/P
MUX
BUF
CHARGE
REDISTRIBUTION
DAC
COMP
V
REF
/AIN1
SOFTWARE
CONTROL
LATCH
V
REF
/
AIN1
2.5V
REF
SPORT
FEATURES
Specified for V
DD
of +2.7 V to +5.25 V
Flexible Power/Throughput Rate Management
Shutdown Mode: 1
m
A Max
One/Two Single-Ended Inputs
Serial Interface: SPI /QSPI /MICROWIRE /DSP
Compatible
8-Lead Narrow SOIC and
m
SOIC Packages
APPLICATIONS
Battery-Powered Systems (Personal Digital Assistants,
Medical Instruments, Mobile Communications)
Instrumentation and Control Systems
High Speed Modems
GE NE RAL DE SCRIPT ION
T he AD7887 is a high speed, low power, 12-bit ADC that oper-
ates from a single +2.7 V to +5.25 V power supply. T he AD7887
is capable of 125 kSPS throughput rate. T he input track-and-
hold acquires a signal in 500 ns and features a single-ended
sampling scheme. T he output coding for the AD7887 is straight
binary and the part is capable of converting full power signals up to
2.5 MHz.
T he AD7887 can be configured for either dual or single chan-
nel operation, via the on-chip Control Register. T here is a
default single-channel mode that allows the AD7887 to be
operated as a read-only ADC. In single-channel operation,
there is one analog input (AIN0) with the V
REF
/AIN1 pin as-
suming its V
REF
function. T his V
REF
pin allows the user access
to the part’s internal +2.5 V reference, or the V
REF
pin can be
overdriven by an external reference to provide the reference
voltage for the part. T his external reference voltage has a range
of +2.5 V to V
DD
. T he analog input range on AIN0 is 0 to +V
REF
.
In dual-channel operation, the V
REF
/AIN1 pin assumes its AIN1
function, providing a second analog input channel. In this case,
the reference voltage for the part is provided via the V
DD
pin. As
a result, the input voltage range on both the AIN0 and AIN1
inputs is 0 to V
DD
.
CMOS construction ensures low power dissipation of typically
2 mW for normal operation and 3
μ
W in power-down mode.
T he part is available in an 8-lead, 0.15-inch-wide narrow body
SOIC and an 8-lead
μ
SOIC package.
PRODUCT HIGHLIGHT S
1. Smallest 12-bit dual/single-channel ADC; 8-lead
μ
SOIC
package.
2. Lowest power 12-bit dual/single-channel ADC.
3. Flexible power management options including automatic
power-down after conversion.
4. Read-Only ADC capability.
5. Analog input range from 0 V to V
REF
.
6. Versatile serial I/O port (SPI/QSPI/MICROWIRE/DSP
compatible).
SPI and QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corporation.
相關PDF資料
PDF描述
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)
AD7888 +2.7 V to +5.25 V, Micropower, 8-Channel, 125 kSPS, 12-Bit ADC in 16-Lead TSSOP
相關代理商/技術參數
參數描述
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
AD7887ARM-REEL 制造商:Analog Devices 功能描述:ADC Single SAR 125ksps 12-bit Serial 8-Pin MSOP T/R
AD7887ARM-REEL7 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
AD7887ARMZ 功能描述:IC ADC 12BIT 2CH SRL 8MSOP RoHS:是 類別:集成電路 (IC) >> 數據采集 - 模數轉換器 系列:- 其它有關文件:TSA1204 View All Specifications 標準包裝:1 系列:- 位數:12 采樣率(每秒):20M 數據接口:并聯 轉換器數目:2 功率耗散(最大):155mW 電壓電源:模擬和數字 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:48-TQFP 供應商設備封裝:48-TQFP(7x7) 包裝:Digi-Reel® 輸入數目和類型:4 個單端,單極;2 個差分,單極 產品目錄頁面:1156 (CN2011-ZH PDF) 其它名稱:497-5435-6
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