AD7911AUJ-R2

更新时间： 2024-02-02 09:01:41

品牌	Logo	应用领域
亚德诺 - ADI		转换器模数转换器光电二极管
页数	文件大小	规格书
28页	312K
描述
2-Channel, 2.35 V to 5.25 V 250 kSPS, 10-/12-Bit ADCs

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AD7911AUJ-R2 技术参数

是否Rohs认证：	不符合	生命周期：	Obsolete
零件包装代码：	TSSOP	包装说明：	MO-193BA, TSOT-23
针数：	8	Reach Compliance Code：	not_compliant
ECCN代码：	EAR99	HTS代码：	8542.39.00.01
风险等级：	5.3	最大模拟输入电压：	5.25 V
最小模拟输入电压：		最长转换时间：	2.8 µs
转换器类型：	ADC, SUCCESSIVE APPROXIMATION	JESD-30 代码：	R-PDSO-G8
JESD-609代码：	e0	长度：	2.9 mm
最大线性误差 (EL)：	0.0488%	模拟输入通道数量：	2
位数：	10	功能数量：	1
端子数量：	8	最高工作温度：	85 °C
最低工作温度：	-40 °C	输出位码：	BINARY
输出格式：	SERIAL	封装主体材料：	PLASTIC/EPOXY
封装代码：	VSSOP	封装等效代码：	TSSOP8,.1
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE, VERY THIN PROFILE, SHRINK PITCH
峰值回流温度（摄氏度）：	220	电源：	2.5/5 V
认证状态：	Not Qualified	采样速率：	0.25 MHz
采样并保持/跟踪并保持：	TRACK	座面最大高度：	1 mm
子类别：	Analog to Digital Converters	标称供电电压：	3 V
表面贴装：	YES	温度等级：	INDUSTRIAL
端子面层：	TIN LEAD	端子形式：	GULL WING
端子节距：	0.65 mm	端子位置：	DUAL
处于峰值回流温度下的最长时间：	30	宽度：	1.6 mm
Base Number Matches：	1

AD7911AUJ-R2 数据手册

2-Channel, 2.35 V to 5.25 V

250 kSPS, 10-/12-Bit ADCs

AD7911/AD7921

FUNCTIONAL BLOCK DIAGRAM

FEATURES

Fast throughput rate: 250 kSPS

Specified for V_DDof 2.35 V to 5.25 V

Low power:

4 mW typ at 250 kSPS with 3 V supplies

13.5 mW typ at 250 kSPS with 5 V supplies

Wide input bandwidth:

IN0

IN1

10-/12-BIT

SUCCESSIVE

APPROXIMATION

ADC

T/H

MUX

71 dB minimum SNR at 100 kHz input frequency

Flexible power/serial clock speed management

No pipeline delays

SCLK

High speed serial interface:

AD7911/AD7921

CONTROL LOGIC

SPI®/QSPI™/MICROWIRE™/DSP compatible

Standby mode: 1 µA maximum

8-lead TSOT package

DOUT

DIN

8-lead MSOP package

GND

APPLICATIONS

Figure 1.

Battery-powered systems:

Personal digital assistants

Medical instruments

Mobile communications

Instrumentation and control systems

Data acquisition systems

High speed modems

The AD7911/AD7921 use advanced design techniques to

achieve very low power dissipation at high throughput rates.

The reference for the part is taken internally from V_DD, thereby

allowing the widest dynamic input range to the ADC. The

analog input range for the part, therefore, is 0 to V_DD. The

conversion rate is determined by the SCLK signal.

Optical sensors

GENERAL DESCRIPTION

PRODUCT HIGHLIGHTS

The AD7911/AD7921¹are 10-bit and 12-bit, high speed, low

power, 2-channel successive approximation ADCs, respectively.

The parts operate from a single 2.35 V to 5.25 V power supply

and feature throughput rates of up to 250 kSPS. The parts

contain a low noise, wide bandwidth track-and-hold amplifier,

which can handle input frequencies in excess of 6 MHz. The

1. 2-channel, 250 kSPS, 10-/12-bit ADCs in TSOT package.

2. Low power consumption.

3. Flexible power/serial clock speed management.

The conversion rate is determined by the serial clock;

conversion time is reduced when the serial clock speed is

increased. The parts also feature a power-down mode to

maximize power efficiency at lower throughput rates.

Average power consumption is reduced when the power-

down mode is used while not converting. Current

consumption is 1 µA maximum and 50 nA typically when

in power-down mode.

conversion process and data acquisition are controlled using

and the serial clock, allowing the devices to interface with

microprocessors or DSPs. The input signal is sampled on the

falling edge of , and the conversion is also initiated at this

point. There are no pipeline delays associated with the part.

4. Reference derived from the power supply.

5. No pipeline delay.

The channel to be converted is selected through the DIN pin,

The parts feature a standard successive approximation

and the mode of operation is controlled by . The serial data

ADC with accurate control of the sampling instant via a

input and once-off conversion control.

stream from the DOUT pin has a channel identifier bit, which

provides information about the converted channel.

¹Protected by U.S. Patent Number 6,681,332.

Rev. 0

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 that may result from its use.

Specifications subject to change without notice. No license is granted by implication

or otherwise under any patent or patent rights of Analog Devices. Trademarks and

registered trademarks are the property of their respective owners.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781.329.4700

Fax: 781.326.8703

www.analog.com

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