AD7357BRUZ-RL

更新时间： 2024-02-14 05:34:39

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
17页	196K
描述
Differential Input,Dual,Simultaneous Sampling, 4.25 MSPS, 14-Bit, SAR ADC

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技术参数
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AD7357BRUZ-RL 技术参数

是否无铅：	含铅	是否Rohs认证：	符合
生命周期：	Active	零件包装代码：	TSSOP
包装说明：	TSSOP, TSSOP16,.25	针数：	16
Reach Compliance Code：	compliant	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	5.24
Samacsys Confidence：	3	Samacsys Status：	Released
2D Presentation：	https://componentsearchengine.com/2D/0T/578578.3.1.png	Schematic Symbol：	https://componentsearchengine.com/symbol.php?partID=578578
PCB Footprint：	https://componentsearchengine.com/footprint.php?partID=578578	3D View：	https://componentsearchengine.com/viewer/3D.php?partID=578578
Samacsys PartID：	578578	Samacsys Image：	https://componentsearchengine.com/Images/9/AD7357YRUZ-RL.jpg
Samacsys Thumbnail Image：	https://componentsearchengine.com/Thumbnails/3/AD7357YRUZ-RL.jpg	Samacsys Pin Count：	16
Samacsys Part Category：	Integrated Circuit	Samacsys Package Category：	Small Outline Packages
Samacsys Footprint Name：	16 PIN TSSOP	Samacsys Released Date：	2017-01-11 11:21:59
Is Samacsys：	N	最大模拟输入电压：	1.6 V
最小模拟输入电压：	0.5 V	最长转换时间：	0.238 µs
转换器类型：	ADC, SUCCESSIVE APPROXIMATION	JESD-30 代码：	R-PDSO-G16
JESD-609代码：	e3	长度：	5 mm
最大线性误差 (EL)：	0.0183%	湿度敏感等级：	1
模拟输入通道数量：	2	位数：	14
功能数量：	1	端子数量：	16
最高工作温度：	125 °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
封装等效代码：	TSSOP16,.25	封装形状：	RECTANGULAR
封装形式：	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	峰值回流温度（摄氏度）：	260
电源：	2.5 V	认证状态：	Not Qualified
采样速率：	4.2 MHz	采样并保持/跟踪并保持：	TRACK
座面最大高度：	1.2 mm	子类别：	Analog to Digital Converters
标称供电电压：	2.5 V	表面贴装：	YES
技术：	CMOS	温度等级：	AUTOMOTIVE
端子面层：	Matte Tin (Sn)	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：	4.4 mm
Base Number Matches：	1

AD7357BRUZ-RL 数据手册

Preliminary Technical Data

AD7357

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS

INA+

DRIVE

SCLK

SDATA

DGND

AGND

INA-

REF

AD7357

TOP VIEW

(Not to Scale)

REFGND

AGND

REF

INB-

INB+

Figure 2. Pin Configuration

Table 4. Pin Function Descriptions

Pin No.

Mnemonic Description

ꢀ

V_DD

Power Supply Input. The V_DDrange for the AD7357 is 2.5V +/- 5ꢁ. The supply should be decoupled to AGND

with a 0.1 µF capacitor and a 10 µF tantalum capacitor.

V_DRIVE

Logic Power Supply Input. The voltage supplied at this pin determines at what voltage the interface will

operate. This pin should be decoupled to DGND. The voltage at this pin may be different to that at V_DD

Chip Select. Active low logic input. This input provides the dual function of initiating conversions on the

AD7357 and framing the serial data transfer.

SCLK

Serial Clock. Logic input. A serial clock input provides the SCLK for accessing the data from the AD7357. This

clock is also used as the clock source for the conversion process.

SDATA_A,

SDATA_B

14,13

Serial Data Outputs. The data output is supplied to each pin as a serial data stream. The bits are clocked out on

the falling edge of the SCLK input. 16 SCLK falling edges are required to access the 14 bits of data from the

AD7357. The data simultaneously appears on both data output pins from the simultaneous conversions of

both ADCs. The data stream consists of one leading zero followed by the 14 bits of conversion data followed by

a trailing zero. The data is provided MSB first. If CS is held low for 18 SCLK cycles rather than 16, then two

further trailing zeros will appear after the 14 bits of data. If CS is held low for a further 18 SCLK cycles on either

SDATA_Aor SDATA_B, the data from the other ADC follows on the SDATA pin. This allows data from a

simultaneous conversion on both ADCs to be gathered in serial format on either SDATA_Aor SDATA_B.

DGND

Digital Ground. This is the ground reference point for all digital circuitry on the AD7357. This pin should

connect to the DGND plane of a system. The DGND and AGND voltages should ideally be at the same potential

and must not be more than 0.3 V apart, even on a transient basis.

5, 11

AGND

Analog Ground. This is the ground reference point for all analog circuitry on the AD7357. All analog input

signals and should be referred to this AGND voltage. The AGND and DGND voltages should ideally be at the

same potential and must not be more than 0.3 V apart, even on a transient basis.

Reference Ground. This is the ground reference point for the reference circuitry on the AD7357. Any external

reference signal should be referred to this REFGND voltage. Decoupling capacitors must be placed between

this pin and the REF_Aand REF_Bpins.

Reference decoupling capacitor pins. Decoupling capacitors are connected between these pins and the

REFGND pin to decouple the reference buffer for each respective ADC. It is recommended to decouple the each

reference pin with a 10µF capacitor. Provided the output is buffered, the on-chip reference can be taken from

these pins and applied externally to the rest of the system. The nominal internal reference voltage is 2.048V

and this appears at these pins. These pins can also be overdriven by an external reference. The input voltage

range for the external reference is 2.048+100mV to Vdd.

REFGND

REF_A, REF_B

3, 6

1, 2

8, 7

V_INA-, V_INA+

V_INB-, V_INB+

Analog Inputs of ADC A. These analog inputs form a fully differential pair.

Analog Inputs of ADC B. These analog inputs form a fully differential pair.

Rev. PrD | Page 7 of 17

1...4 5 678 9 10...17

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