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參數(shù)資料
| 型號(hào)： | EVAL-AD7887CB |
| 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(shù)： | 1/16頁 |
| 文件大小： | 133K |
| 代理商： | EVAL-AD7887CB |
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.
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| EVAL-AD7887CB4 | 制造商:AD 制造商全稱:Analog Devices 功能描述:2.7 V to 5.25 V, Micropower, 2-Channel, 125 kSPS, 12-Bit ADC in 8-Lead MSOP |
| EVAL-AD7887CBZ | 功能描述:BOARD EVAL FOR AD7887 RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評(píng)估板 - 模數(shù)轉(zhuǎn)換器 (ADC) 系列:* 產(chǎn)品培訓(xùn)模塊:Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:- ADC 的數(shù)量:1 位數(shù):12 采樣率（每秒）:94.4k 數(shù)據(jù)接口:USB 輸入范圍:±VREF/2 在以下條件下的電源（標(biāo)準(zhǔn)）:- 工作溫度:-40°C ~ 85°C 已用 IC / 零件:MAX11645 已供物品:板，軟件 |
| EVAL-AD7888CB | 制造商:Analog Devices 功能描述:EVAL KIT FOR 2.7 V TO 5.25 V, MICROPWR, 8CH, 125 KSPS, 12-BI - Bulk |
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