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| 型號(hào)： | AD7887WARMZ-RL |
| 廠商： | Analog Devices Inc |
| 文件頁(yè)數(shù)： | 1/24頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC ADC 12BIT 2CH SRL 8-MSOP |
| 標(biāo)準(zhǔn)包裝： | 3,000 |
| 位數(shù)： | 12 |
| 采樣率（每秒）： | 125k |
| 數(shù)據(jù)接口： | DSP，MICROWIRE?，QSPI?，串行，SPI? |
| 轉(zhuǎn)換器數(shù)目： | 1 |
| 功率耗散（最大）： | 3.5mW |
| 電壓電源： | 單電源 |
| 工作溫度： | -40°C ~ 125°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 8-TSSOP，8-MSOP（0.118"，3.00mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 8-MSOP |
| 包裝： | 帶卷 (TR) |
| 輸入數(shù)目和類型： | 2 個(gè)單端，單極 |
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2.7 V to 5.25 V, Micropower, 2-Channel,
125 kSPS, 12-Bit ADC in 8-Lead MSOP
AD7887
Rev. D
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringementsof patentsorother
rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
2009 Analog Devices, Inc. All rights reserved.
FEATURES
Specified for VDD of 2.7 V to 5.25 V
Flexible power/throughput rate management
Shutdown mode: 1 μA max
One or two single-ended inputs
Serial interface: SPI/QSPI/MICROWIRE/DSP compatible
8-lead narrow SOIC and MSOP packages
APPLICATIONS
Battery-powered systems (personal digital assistants,
medical instruments, mobile communications)
Instrumentation and control systems
High speed modems
FUNCTIONAL BLOCK DIAGRAM
SAR + ADC
CONTROL LOGIC
GND
AIN0
SCLK
DOUT
DIN
VDD
AD7887
CS
T/H
I/P
MUX
BUF
CHARGE
REDISTRIBUTION
DAC
COMP
AIN1/
VREF
AIN1/VREF
SOFTWARE
CONTROL
LATCH
2.5V
REF
SPORT
0
61
91
-0
01
Figure 1.
GENERAL DESCRIPTION
The AD7887 is a high speed, low power, 12-bit analog-to-digital
converter (ADC) that operates from a single 2.7 V to 5.25 V
power supply. The AD7887 is capable of 125 kSPS throughput
rate. The input track-and-hold acquires a signal in 500 ns and
features a single-ended sampling scheme. The output coding for
the AD7887 is straight binary, and the part is capable of
converting full power signals of up to 2.5 MHz.
The AD7887 can be configured for either dual- or single-channel
operation via the on-chip control register. There 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) and the AIN1/VREF pin assumes its VREF
function. This VREF pin allows the user access to the part’s
internal 2.5 V reference, or the VREF pin can be overdriven by an
external reference to provide the reference voltage for the part.
This external reference voltage has a range of 2.5 V to VDD. The
analog input range on AIN0 is 0 to VREF.
In dual-channel operation, the AIN1/VREF pin assumes its AIN1
function, providing a second analog input channel. In this case,
the reference voltage for the part is provided via the VDD pin. As
a result, the input voltage range on both the AIN0 and AIN1
inputs is 0 to VDD.
CMOS construction ensures low power dissipation of typically
2 mW for normal operation and 3 μW in power-down mode.
The part is available in an 8-lead, 0.15-inch-wide narrow body
SOIC and an 8-lead MSOP package.
PRODUCT HIGHLIGHTS
1.
Smallest 12-bit dual-/single-channel ADC; 8-lead MSOP
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 VREF.
6.
Versatile serial input/output port (SPI/QSPI/MICROWIRE/
DSP compatible).
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| AD7888ARU | 功能描述:IC ADC 12BIT 8CH 125KSPS 16TSSOP 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 |
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