Datasheet > AD7942BRMRL7

AD7942BRMRL7

更新时间： 2024-02-25 23:35:38

品牌	Logo	应用领域
亚德诺 - ADI		转换器光电二极管
页数	文件大小	规格书
28页	793K
描述
14-Bit, 250 kSPS PulSAR ADC in MSOP/QFN

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AD7942BRMRL7 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：	TSSOP,
针数：	10	Reach Compliance Code：	compliant
风险等级：	5.37	最大模拟输入电压：	5.8 V
最小模拟输入电压：		最长转换时间：	2.2 µs
转换器类型：	ADC, SUCCESSIVE APPROXIMATION	JESD-30 代码：	S-PDSO-G10
JESD-609代码：	e0	长度：	3 mm
最大线性误差 (EL)：	0.0061%	模拟输入通道数量：	1
位数：	14	功能数量：	1
端子数量：	10	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：	TSSOP	封装形状：	SQUARE
封装形式：	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	峰值回流温度（摄氏度）：	220
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：	1.1 mm
标称供电电压：	5 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：	0.5 mm
端子位置：	DUAL	处于峰值回流温度下的最长时间：	30
宽度：	3 mm	Base Number Matches：	1

AD7942BRMRL7 数据手册

14-Bit, 250 kSPS PulSAR™

ADC in MSOP/QFN

Preliminary Technical Data

AD7942

FEATURES

APPLICATION DIAGRAM

14-bit resolution with no missing codes

Throughput: 250 kSPS

0.5 TO 5V 2.5V to 5V

INL: 0.4 LSB typ, 1 LSB max ( 0.0061 % of FSR)

S/(N + D): 85 dB @ 20 kHz

THD: −100 dB @ 20 kHz

Pseudo-differential analog input range

0 V to V_REFwith V_REFup to VDD

VIO

SDI

1.8 TO VDD

REF VDD

0 TO VREF

IN+

IN–

SCK

SDO

CNV

AD7942

3- OR 4-WIRE INTERFACE

(SPI, DAISY CHAIN, CS)

GND

No pipeline delay

Single-supply 5V operation with

1.8 V/2.5 V/3 V/5 V logic interface

Serial interface SPI®/QSPI™/µWire/DSP compatible

Daisy chain multiple ADCs and BUSY indicator

Power dissipation

Figure 1.

GENERAL DESCRIPTION

1.15 mW @ 2.5 V/100 kSPS, 3.3 mW @ 5 V/100 kSPS,

1.15 µW @ 2.5 V/100 SPS

Stand-by current: 1 nA

10-lead package: MSOP (MSOP-8 size) and

3 mm × 3 mm QFN (LFCSP) (SOT-23 size)

Pin-for-pin compatible with the 16-Bit AD7685

The AD7942 is a 14-bit, charge redistribution successive

approximation, analog-to-digital converter (ADC) that operates

from a single 5V power supply, VDD. It contains a low power,

high speed, 14-bit sampling ADC with no missing codes, an

internal conversion clock, and a versatile serial interface port.

The part also contains a low noise, wide bandwidth, short

aperture delay track-and-hold circuit. On the CNV rising edge,

it samples an analog input IN+ between 0 V to REF with respect

to a ground sense IN−. The reference voltage, REF, is applied

externally and can be set up to the supply voltage.

APPLICATIONS

Battery-powered equipment

Data acquisition

Instrumentation

Medical instruments

Process control

Its power scales linearly with throughput.

The SPI compatible serial interface also features the ability,

using the SDI input, to daisy chain several ADCs on a single 3-

wire bus and provides an optional BUSY indicator. It is

compatible with 1.8 V, 2.5 V, 3 V, or 5 V logic using the separate

supply VIO.

Table 1. MSOP, QFN (LFCSP)/SOT-23 14 and16-Bit ADC

Type

100 kSPS

250 kSPS

500 kSPS

16-Bit True

Differential

AD7684

AD7687

AD7688

16-Bit Pseudo

Differential/Unipolar

16-Bit Unipolar

AD7683

AD7680

AD7685

AD7694

AD7686

The AD7942 is housed in a 10-lead MSOP or a 10-lead QFN

(LFCSP) with operation specified from −40°C to +85°C.

14-Bit Pseudo

AD7942

AD7946

Differential/Unipolar

14-Bit Unipolar

AD7940

Rev Pr 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 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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与AD7942BRMRL7相关器件

型号	品牌	获取价格	描述	数据表
AD7942BRM-RL7	ADI	获取价格	14-Bit, 250 kSPS PulSAR, Pseudo Differential ADC in MSOP/QFN
AD7942BRMZ	ADI	获取价格	Pseudo Differential ADC in MSOP/LFCSP
AD7942BRMZ1	ADI	获取价格	14-Bit, 250 kSPS PulSAR, Pseudo Differential ADC in MSOP/QFN
AD7942BRMZ-RL7	ADI	获取价格	14-Bit, 250 kSPS PulSAR®, Pseudo Differential ADC in MSOP/LFCSP
AD7942BRMZ-RL7	ROCHESTER	获取价格	1-CH 14-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO10, LEAD FREE, MO-187BA, MSOP
AD7942BRMZ-RL71	ADI	获取价格	14-Bit, 250 kSPS PulSAR, Pseudo Differential ADC in MSOP/QFN
AD7943	ADI	获取价格	+3.3 V/+5 V Multiplying 12-Bit DACs
AD7943_15	ADI	获取价格	3.3 V/5 V Multiplying 12-Bit DACs
AD7943AN-B	ADI	获取价格	+3.3 V/+5 V Multiplying 12-Bit DACs
AD7943ANZ-B	ROCHESTER	获取价格	SERIAL INPUT LOADING, 5 us SETTLING TIME, 12-BIT DAC, PDIP16, PLASTIC, DIP-16

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