Datasheet > AFE88201

AFE88201

更新时间： 2024-11-22 15:17:11

品牌	Logo	应用领域
德州仪器 - TI		传感器
页数	文件大小	规格书
95页	3893K
描述
用于传感器变送器的单通道 16 位电压模拟前端 (AFE)

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中文翻译

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AFE88201 数据手册

AFE78201, AFE88201

SLASF44 – MAY 2023

AFEx8201 16-Bit and 14-Bit Digital-to-Analog Converters (DACs)

With Voltage Reference and Diagnostic ADC for Low-Power Applications

1 Features

3 Description

•

Functional Safety-Capable

– Documentation available to aid functional safety

system design

Low quiescent current: 170 µA (typical), 210 µA

(maximum)

16-bit or 14-bit monotonic high-performance DAC

– DAC output range: 0 V to 2.5 V

– Digital DAC slew-rate control

The 16-bit AFE88201 and 14-bit AFE78201

(AFEx8201) are highly-integrated, high-accuracy,

extremely low-power digital-to-analog converters

(DACs) with voltage outputs designed for process-

control and industrial-automation applications.

•

The AFEx8201 devices include most of the

components required to design a 4‑mA to 20‑mA,

3‑wire or 4-wire sensor transmitter or analog output

module. In addition to the highly accurate DAC, the

AFEx8201 incorporate a 10-ppm/°C voltage reference

and diagnostic analog-to-digital converter (ADC).

To accommodate intrinsic and functional-safety

concerns, external voltage-to-current conversion and

power-regulation are required.

– 4-LSB INL at 16 bits

– 0.07% FSR (max) TUE from –40°C to +125°C

12-bit 3.84-kSPS ADC for advanced diagnostics

Integrated 1.25-V reference at 10 ppm/°C (max)

Internal 1.2288-MHz oscillator with clock output

Digital interfaces:

•

– Serial peripheral interface (SPI)

– Universal asynchronous receiver-transmitter

(UART)

Fault detection: CRC bit error checking, windowed

watchdog timer, diagnostic ADC

The internal diagnostic ADC is multiplexed to

several internal nodes that enable an automatic self-

health check. This check is capable of detecting

errors or malfunctions of the internal bias sources,

power regulator, voltage reference, DAC output, die

temperature, and optional external voltage source. If

any fault is detected from the diagnostic ADC, CRC

frame-error checking, or windowed watchdog timer,

the devices can optionally issue an interrupt, enter a

user-specified fail-safe state, or both.

•

Wide operating temperature: –55°C to +125°C

2 Applications

•

Process control and industrial automation

PLC or DCS I/O modules

3-wire and 4-wire transmitters

4-mA to 20-mA loop-powered applications

Device Information

PART NUMBER

AFE78201

RESOLUTION

14-bit

16-bit

PACKAGE⁽¹⁾

RRU (UQFN, 24)

4.00 mm × 4.00 mm

AFE88201

(1) For all available packages, see the package option

addendum at the end of the data sheet.

IOVDD

ALARM

PVDD

VDD

Internal

Diagnostics

AIN0

Alarm

Diagnostics

IRQ (UARTOUT or SDO)

12-Bit ADC

MUX

POL_SEL/AIN1

Temperature

Sensor

GPIO6/CS

GPIO5/SDI

GPIO4/SDO

Alarm

Responses

User

Calibration

16-/14-Bit

DAC

SCLK

VOUT

MUX

DAC Data

GPIO3/UARTIN

Slew-Rate

Control

VREFIO

REF_EN

Internal

Reference

GPIO2/UARTOUT

Watchdog

Timer

REF_GND

RESET

Control Logic

CRC Frame

Error Check

Internal

Oscillator

GPIO0/CLK_OUT

GND

SCLR

GPIO1

Simplified Block Diagram

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.

12 3 4 5 6 7...95

中文翻译

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与AFE88201相关器件

型号	品牌	获取价格	描述	数据表
AFE88201RRUR	TI	获取价格	用于传感器变送器的单通道 16 位电压模拟前端 (AFE) \| RRU \| 24 \| -5
AFE88201RRUT	TI	获取价格	用于传感器变送器的单通道 16 位电压模拟前端 (AFE) \| RRU \| 24 \| -5
AFE882H1	TI	获取价格	适用于 PLC 和传感器变送器应用且具有 HART®、16 位 DAC 和 12
AFE882H1RRUR	TI	获取价格	适用于 PLC 和传感器变送器应用且具有 HART®、16 位 DAC 和
AFEDRI8201	BB	获取价格	IF ADC Front End for AM/FM and HD Radios
AFEDRI8201PFBR	BB	获取价格	IF ADC Front End for AM/FM and HD Radios
AFEDRI8201PFBRG4	TI	获取价格	SPECIALTY CONSUMER CIRCUIT, PQFP48, GREEN, PLASTIC, QFP-48
AFEDRI8201PFBT	BB	获取价格	IF ADC Front End for AM/FM and HD Radios
AFEDRI8201PFBTG4	TI	获取价格	SPECIALTY CONSUMER CIRCUIT, PQFP48, GREEN, PLASTIC, QFP-48
AFEM-7780	AVAGO	获取价格	IC,RF AMPLIFIER,SINGLE,LLCC,20PIN,PLASTIC

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