Datasheet > ADS1148-Q1

ADS1148-Q1

更新时间： 2024-11-30 11:12:51

品牌	Logo	应用领域
德州仪器 - TI		传感器
页数	文件大小	规格书
80页	1404K
描述
适用于精密传感器测量且具有 PGA、基准电压和 IDAC 的汽车类 16 位 2kSPS ADC

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ADS1148-Q1

SBAS674A –JULY 2014–REVISED SEPTEMBER 2016

ADS1148-Q1 Automotive,16-Bit, 2-kSPS, Analog-to-Digital Converter with Integrated

Programmable Gain Amplifier (PGA), Reference, and Oscillator

1 Features

3 Description

The ADS1148-Q1 is a highly-integrated, precision,

16-bit analog-to-digital converter (ADC) that includes

many integrated features to reduce system cost and

•

Qualified for Automotive Applications

•

AEC-Q100 Qualified with the Following Results:

–

Temperature Grade 1: –40°C to +125°C

HBM ESD Classification 2

component

count

for

sensor

measurement

low-noise,

applications. The device features

programmable gain amplifier (PGA), a precision

delta-sigma (ΔΣ) ADC with a single-cycle settling

digital filter, and an internal oscillator. The

ADS1148-Q1 integrates a low-drift voltage reference,

and two matched programmable excitation current

sources (IDACs).

CDM ESD Classification C5

•

Programmable Gain: 1 V/V to 128 V/V

Programmable Data Rates: 5 SPS to 2 kSPS

Single-Cycle Settling for All Data Rates

Analog Multiplexer With 8 Independently

Selectable Inputs

The device offers a fully flexible multiplexer that

allows both positive and negative inputs to be

selected independently. In addition, the multiplexer

integrates sensor burn-out detection, voltage bias for

thermocouples, system monitoring, and eight general-

purpose digital I/Os (GPIOs). The PGA provides

selectable gains up to 128 V/V. These features

provide a complete front-end solution for temperature

•

Dual-Matched Programmable Excitation Current

Sources: 50 µA to 1.5 mA

•

Internal 2.048-V Voltage Reference

Internal 4.096-MHz Oscillator

Internal Temperature Sensor

Open Sensor Detection

sensor

measurement

applications,

and

including

resistance

thermocouples,

thermistors,

Power-Supply and External Reference Monitoring

Self and System Calibration

temperature detectors (RTDs), and other small-signal

measurements. The digital filter settles in a single

cycle to support fast channel cycling when using the

input multiplexer and provides data rates up to

2 kSPS. For data rates of 20 SPS or less, both the

50-Hz and 60-Hz interference are rejected by the

filter.

8 General-Purpose I/Os

SPI-Compatible Serial Interface

Analog Supply: Unipolar (2.7 V to 5.25 V) or

Bipolar (±2.5 V)

•

Digital Supply: 2.7 V to 5.25 V

Device Information⁽¹⁾

2 Applications

PART NUMBER

PACKAGE

BODY SIZE (NOM)

•

Thermocouple-, RTD- and Thermistor-

ADS1148-Q1

TSSOP (28)

9.70 mm × 4.40 mm

Based Temperature Measurement Systems

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

the end of the datasheet.

•

Exhaust Gas Sensing (Soot, NO_x, NH₃, O2)

Battery Management Systems (BMS)

Multichannel Voltage and Current Monitoring

Functional Block Diagram

REFP0/ REFN0/

AVDD

GPIO0 GPIO1 REFP1 REFN1 REFOUT REFCOM

DVDD

Burnout

Detect

Voltage

Reference Mux

Reference

V_BIAS

GPIO

SCLK

AIN0/IEXC

AIN1/IEXC

System

Monitor

DIN

Serial

DRDY

DOUT/DRDY

AIN2/IEXC/GPIO2

AIN3/IEXC/GPIO3

3rd-Order

Digital

Filter

Interface

and

Input

Mux

PGA

Modulator

AIN4/IEXC/GPIO4

AIN5/IEXC/GPIO5

Control

START

RESET

AIN6/IEXC/GPIO6

AIN7/IEXC/GPIO7

IDACs

Internal Oscillator

Burnout

Detect

ADS1148-Q1

AVSS IEXC1 IEXC2

CLK

DGND

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...80

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与ADS1148-Q1相关器件

型号	品牌	获取价格	描述	数据表
ADS1148QPWRQ1	TI	获取价格	适用于精密传感器测量且具有 PGA、基准电压和 IDAC 的汽车类 16 位 2kSPS
ADS114S06	TI	获取价格	适用于传感器测量且具有 PGA 和电压基准的 16 位、4kSPS、6 通道 Δ-Σ AD
ADS114S06B	TI	获取价格	适用于低成本应用且具有 PGA 和电压基准的 16 位、4kSPS、6 通道 Δ-Σ AD
ADS114S06BIPBS	TI	获取价格	适用于低成本应用且具有 PGA 和电压基准的 16 位、4kSPS、6 通道 Δ-Σ AD
ADS114S06BIPBSR	TI	获取价格	适用于低成本应用且具有 PGA 和电压基准的 16 位、4kSPS、6 通道 Δ-Σ AD
ADS114S06BIRHBR	TI	获取价格	适用于低成本应用且具有 PGA 和电压基准的 16 位、4kSPS、6 通道 Δ-Σ AD
ADS114S06BIRHBT	TI	获取价格	适用于低成本应用且具有 PGA 和电压基准的 16 位、4kSPS、6 通道 Δ-Σ AD
ADS114S06IPBS	TI	获取价格	适用于传感器测量且具有 PGA 和电压基准的 16 位、4kSPS、6 通道 Δ-Σ AD
ADS114S06IPBSR	TI	获取价格	适用于传感器测量且具有 PGA 和电压基准的 16 位、4kSPS、6 通道 Δ-Σ AD
ADS114S06IRHBR	TI	获取价格	适用于传感器测量且具有 PGA 和电压基准的 16 位、4kSPS、6 通道 Δ-Σ AD

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