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| 型号： | AD7451ARMZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 1/25页 |
| 文件大小： | 0K |
| 描述： | IC ADC 12BIT DIFF 1MSPS 8MSOP |
| 标准包装： | 50 |
| 位数： | 12 |
| 采样率（每秒）： | 1M |
| 数据接口： | DSP，MICROWIRE?，QSPI?，串行，SPI? |
| 转换器数目： | 1 |
| 功率耗散（最大）： | 9.25mW |
| 电压电源： | 单电源 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽） |
| 供应商设备封装： | 8-MSOP |
| 包装： | 管件 |
| 输入数目和类型： | 1 个伪差分，单极 |
Pseudo Differential Input, 1 MSPS,
10-/12-Bit ADCs in an 8-Lead SOT-23
AD7441/AD7451
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
2003–2010 Analog Devices, Inc. All rights reserved.
FEATURES
Fast throughput rate: 1 MSPS
Specified for VDD of 2.7 V to 5.25 V
Low power at maximum throughput rate:
4 mW maximum at 1 MSPS with VDD = 3 V
9.25 mW maximum at 1 MSPS with VDD = 5 V
Pseudo differential analog input
Wide input bandwidth:
70 dB SINAD at 100 kHz input frequency
Flexible power/serial clock speed management
No pipeline delays
High speed serial interface:
SPI-/QSPI-/MICROWIRE-/DSP-compatible
Power-down mode: 1 μA maximum
8-lead SOT-23 and MSOP packages
APPLICATIONS
Transducer interface
Battery-powered systems
Data acquisition systems
Portable instrumentation
FUNCTIONAL BLOCK DIAGRAM
VREF
T/H
CONTROL LOGIC
12-BIT
SUCCESSIVE
APPROXIMATION
ADC
GND
SCLK
SDATA
CS
VDD
AD7441/AD7451
VIN+
VIN–
03
15
3-
0
01
Figure 1.
GENERAL DESCRIPTION
The AD7441/AD74511 are, respectively, 10-/12-bit high speed,
low power, single-supply, successive approximation (SAR),
analog-to-digital converters (ADCs) that feature a pseudo
differential analog input. These parts operate from a single
2.7 V to 5.25 V power supply and achieve very low power
dissipation at high throughput rates of up to 1 MSPS.
The AD7441/AD7451 contain a low noise, wide bandwidth,
differential track-and-hold (T/H) amplifier that handles input
frequencies up to 3.5 MHz. The reference voltage for these
devices is applied externally to the VREF pin and can range from
100 mV to VDD, depending on the power supply and what suits
the application.
The conversion process and data acquisition are controlled
using CS and the serial clock, allowing the device to interface
with microprocessors or DSPs. The input signals are sampled
on the falling edge of CS when the conversion is initiated.
The SAR architecture of these parts ensures that there are no
pipeline delays.
1 Protected by U.S. Patent Number 6,681,332.
PRODUCT HIGHLIGHTS
1.
Operation with 2.7 V to 5.25 V Power Supplies.
2.
High Throughput with Low Power Consumption.
With a 3 V supply, the AD7441/AD7451 offer 4 mW maxi-
mum power consumption for a 1 MSPS throughput rate.
3.
Pseudo Differential Analog Input.
4.
Flexible Power/Serial Clock Speed Management.
The conversion rate is determined by the serial clock,
allowing the power to be reduced as the conversion time
is reduced through the serial clock speed increase. These
parts also feature a shutdown mode to maximize power
efficiency at lower throughput rates.
5.
Variable Voltage Reference Input.
6.
No Pipeline Delays.
7.
Accurate Control of Sampling Instant via CS Input and
Once-Off Conversion Control.
8.
ENOB > 10 Bits Typically with 500 mV Reference.
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| AD7451ART-R2 | 功能描述:IC ADC 12BIT W/DIFF INP SOT-23-8 RoHS:否 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 位数:12 采样率（每秒）:3M 数据接口:- 转换器数目:- 功率耗散（最大）:- 电压电源:- 工作温度:- 安装类型:表面贴装 封装/外壳:SOT-23-6 供应商设备封装:SOT-23-6 包装:带卷 (TR) 输入数目和类型:- |
| AD7451ART-REEL7 | 制造商:Analog Devices 功能描述:ADC Single SAR 1Msps 12-bit Serial 8-Pin SOT-23 T/R 制造商:Rochester Electronics LLC 功能描述: |
| AD7451ARTZ-REEL7 | 功能描述:IC ADC 12BIT DIFF 1MSPS SOT23-8 RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:1,000 系列:- 位数:16 采样率（每秒）:45k 数据接口:串行 转换器数目:2 功率耗散（最大）:315mW 电压电源:模拟和数字 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:28-SOIC（0.295"，7.50mm 宽） 供应商设备封装:28-SOIC W 包装:带卷 (TR) 输入数目和类型:2 个单端，单极 |
| AD7451BRM | 制造商:Analog Devices 功能描述:ADC Single SAR 1Msps 12-bit Serial 8-Pin MSOP 制造商:Analog Devices 功能描述:12BIT SAR ADC DIFF I/P SMD 7451 |
| AD7451BRM-REEL7 | 制造商:Analog Devices 功能描述:ADC Single SAR 1Msps 12-bit Serial 8-Pin MSOP T/R |
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