Datasheet > MAX11284

MAX11284

更新时间： 2024-11-07 14:58:11

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
44页	1466K
描述
双路、24位、低功耗、高SNR、4ksps、Δ-Σ ADC，内置PGA

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MAX11284 数据手册

MAX11284

Dual 24-Bit, Low-Power, High-SNR,

4ksps Delta-Sigma ADCs with Integrated PGAs

General Description

Beneﬁts and Features

● High Resolution for Instrumentation Applications That

The MAX11284 is a dual 24-bit delta sigma ADC that

achieves excellent SNR while dissipating a low 3.6mW per

ADC. Precision DC and AC measurements can be made at

sample rates up to 4ksps. Integral nonlinearity is guaranteed

to 4ppm maximum and the THD is -120dB. The MAX11284

communicates through an SPI-compatible serial interface

and is available in a small, 40-pin TQFN package.

Require a Wide Dynamic Range

• 131dB SNR at 31.25sps in Buffer Mode

• 114dB SNR at 2000sps in Buffer Mode

● Low Power

• Digital Current with FIR Filter, 1ksps: 500µA

• Analog Current PGA Low-Power Mode: 2.1mA

• Sleep Current: 1.2μA

The PGAs can operate in either low-noise (9.1nV/√Hz)

or low-power (13.6nV/√Hz) mode, and have selectable

gain values ranging from 1x to 128x. Optional buffers are

also included to provide isolation of the signal inputs from

the switched capacitor sampling network. This allows the

ADCs to be used with high-impedance sources without

compromising available dynamic range.

● High Accuracy for DC Measurements

• 1ppm INL (typ), 4ppm (max)

● Single/Split Analog Supplies Provide Input Voltage

Range Flexibility

• 2.7V to 3.6V (Single-Supply) or ±1.8V (Split Supplies)

● Digital Filters

The MAX11284 operates from a single 2.7V to 3.6V

analog supply, or split ±1.8V analog supplies, allowing

the analog input to be sampled below ground. The digital

supply range is 2.0V to 3.6V, allowing communication with

2.5V, 3V, or 3.3V logic.

• Programmable SINC + FIR + IIR

• Linear/Minimum Phase Response

• Programmable High-Pass Filter

• Selectable FIR Data Rates: 31.25sps to 4ksps

● Enables System Integration

• Low-Noise and Low-Power mode PGA with Gains

of 1, 2, 4, 8, 16, 32, 64, 128

Applications

● Seismic Data Acquisition

● Scientiﬁc Instrumentation

● High-Precision Portable Sensors

● Medical Equipment

● ATE

• Signal Buffer Optional

• 2 General-Purpose I/Os

● Integrated Offset and Gain Self-Calibration and

System Gain and Offset Calibration Registers

● Small 40-Pin TQFN Package

Ordering Information appears at end of data sheet.

19-8268; Rev 0; 4/16

12 3 4 5 6 7...44

中文翻译

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与MAX11284相关器件

型号	品牌	获取价格	描述	数据表
MAX113	MAXIM	获取价格	4-Digit.Up/Down Counter Decoder Driver[MM74C945/MM74C947/MM74C945C/D/MM74C945N ]
MAX113	ADI	获取价格	+3V、400ksps、4/8通道、8位ADC，带有1μA关断模式
MAX11300	ADI	获取价格	PIXI、20端口可编程混合信号I/O，带有12位ADC、12位DAC、模拟开关和GPIO
MAX11301	ADI	获取价格	PIXI、20端口可编程混合信号I/O，带有12位ADC、12位DAC、模拟开关和GPIO
MAX11311	MAXIM	获取价格	PIXI, 12-Port Programmable Mixed-Signal I/O with 12-Bit ADC, 12-Bit DAC, Analog Switches,
MAX11311	ADI	获取价格	PIXI、12端口可编程混合信号I/O，带有12位ADC、12位DAC、模拟开关和GPIO
MAX11311GTJ	MAXIM	获取价格	PIXI, 12-Port Programmable Mixed-Signal I/O with 12-Bit ADC, 12-Bit DAC, Analog Switches,
MAX11311GTJ+	MAXIM	获取价格	Analog Circuit, 1 Func, BICMOS, 5 X 5 MM, ROHS COMPLIANT, TQFN-32
MAX11312	MAXIM	获取价格	PIXI, 12-Port Programmable Mixed-Signal I/O with 12-Bit ADC, 12-Bit DAC, Analog Switches,
MAX11312	ADI	获取价格	PIXI、12端口可编程混合信号I/O，带有12位ADC、12位DAC、模拟开关和GPIO

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