Datasheet > ADS7038-Q1

ADS7038-Q1

更新时间： 2024-11-19 11:07:51

品牌	Logo	应用领域
德州仪器 - TI		转换器模数转换器
页数	文件大小	规格书
88页	2718K
描述
具有 SPI、GPIO 和 CRC 的汽车类 8 通道、1MSPS、12 位模数转换器 (ADC)

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ADS7038-Q1 数据手册

ADS7038-Q1

_{SBAS981A – MAY 2020 – REVISED N}A_OD_VES_M7_B0_E3_R8₂-Q₀₂1₀

SBAS981A – MAY 2020 – REVISED NOVEMBER 2020

www.ti.com

ADS7038-Q1 Small, 8-Channel, 12-Bit ADC with SPI Interface, GPIOs, and CRC

1 Features

2 Applications

•

AEC-Q100 qualified for automotive applications:

– Temperature grade 1: –40°C to +125°C, T_A

Small package size:

•

Battery management systems (BMS)

Automotive cluster displays

Inverter and motor controls

•

– WQFN 3 mm × 3 mm

Onboard (OBC) and wireless chargers

– Wettable flanks for visual inspection of solder

joints

8 channels configurable as any combination of:

– Up to 8 analog inputs, digital inputs, or digital

outputs

GPIOs for I/O expansion:

– Open-drain, push-pull digital outputs

Analog watchdog:

3 Description

The ADS7038-Q1 is an easy-to-use, 8-channel,

multiplexed,

•

12-bit,

1-MSPS,

successive

approximation register analog-to-digital converter

(SAR ADC). The eight channels can be independently

configured as either analog inputs, digital inputs, or

digital outputs. The device has an internal oscillator

for the ADC conversion process.

•

– Programmable thresholds per channel

– Event counter for transient rejection

Wide operating ranges:

– AVDD: 2.35 V to 5.5 V

– DVDD: 1.65 V to 5.5 V

Enhanced-SPI digital interface:

– High-speed, 60-MHz interface

CRC for read/write operation:

– CRC on data read/write

– CRC on power-up configuration

Programmable averaging filters:

– Programmable sample size for averaging

– Averaging with internal conversions

– 16-bit resolution

The ADS7038-Q1 communicates through an SPI-

compatible interface and operates in either

autonomous or single-shot conversion mode. The

ADS7038-Q1 implements the analog watchdog

function by event-triggered interrupts per channel

using a digital window comparator with programmable

high and low thresholds, hysteresis, and an event

counter. The ADS7038-Q1 has a built-in cyclic

redundancy check (CRC) for data read/write

operations and the power-up configuration.

•

Device Information ⁽¹⁾

•

PART NUMBER

PACKAGE

BODY SIZE (NOM)

ADS7038-Q1

WQFN (16)

3.00 mm × 3.00 mm

(1) For all available packages, see the orderable addendum at

the end of the datasheet.

Turbo comparator mode with speeds up to

3.2 MSPS

Example System Architecture

Device Block Diagram

AVDD

DECAP

VCC

AVDD

High/Low Threshold

8 x Hysteresis

DVDD

Digital Window

Comparator

OVP

AIN0/GPIO0

AIN1/GPIO1

AIN2/GPIO2

AIN3/GPIO3

AIN4/GPIO4

AIN5/GPIO5

AIN6/GPIO6

AIN7/GPIO7

Programmable

Averaging Filters

ADC

MUX

ADC

GPIO

OCP

MUX

SPI Interface

SCLK

SDI

Sequencer

Pin CFG

and

CRC

Verification

SDO

GPO Write

GPI Read

OVP: Over voltage protection

OCP: Over current protection

GND

ADS7038-Q1 Block Diagram and Applications

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.

Product Folder Links: ADS7038-Q1

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与ADS7038-Q1相关器件

型号	品牌	获取价格	描述	数据表
ADS7038-Q1_V01	TI	获取价格	ADS7038-Q1 Small, 8-Channel, 12-Bit ADC with SPI Interface, GPIOs, and CRC
ADS7038QRTERQ1	TI	获取价格	ADS7038-Q1 Small, 8-Channel, 12-Bit ADC with SPI Interface, GPIOs, and CRC
ADS7039-Q1	TI	获取价格	超低功耗、超小型 10 位 2MSPS SAR ADC
ADS7039QDCURQ1	TI	获取价格	超低功耗、超小型 10 位 2MSPS SAR ADC \| DCU \| 8 \| -40 t
ADS703H	BB	获取价格	ADC, Flash Method, 16-Bit, 1 Func, 1 Channel, Parallel, Word Access, Hybrid, CDIP40,
ADS703H	TI	获取价格	1-CH 16-BIT FLASH METHOD ADC, PARALLEL ACCESS, CDIP40
ADS703HB	BB	获取价格	ADC, Flash Method, 16-Bit, 1 Func, 1 Channel, Parallel, Word Access, Hybrid, CDIP40,
ADS703HB	TI	获取价格	1-CH 16-BIT FLASH METHOD ADC, PARALLEL ACCESS, CDIP40
ADS7040	TI	获取价格	超低功耗、超小尺寸 SAR ADC \| 8 位 \| 1MSPS \| 单端
ADS7040IDCUR	TI	获取价格	超低功耗、超小尺寸 SAR ADC \| 8 位 \| 1MSPS \| 单端 \| DCU \|

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