MX7705EPE+

更新时间： 2024-11-26 12:58:15

品牌	Logo	应用领域
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MX7705EPE+ 数据手册

19-3051; Rev 0; 10/03

16-Bit, Low-Power, 2-Channel,

Sigma-Delta ADC

General Description

Features

The MX7705 low-power, 2-channel, serial-output ana-

log-to-digital converter (ADC) includes a sigma-delta

modulator with a digital filter to achieve 16-bit resolution

with no missing codes. This ADC is pin compatible and

software compatible with the AD7705. The MX7705 fea-

tures an on-chip input buffer and programmable-gain

amplifier (PGA). The device offers an SPI-/QSPI-/

MICROWIRE-compatible serial interface.

The MX7705 operates from a single 2.7V to 5.25V supply.

The operating supply current is 320µA (typ) with a 3V

supply. Power-down mode reduces the supply current to

2µA (typ).

ꢀ Pin Compatible and Software Compatible with the

AD7705

ꢀ 16-Bit Sigma-Delta ADC

ꢀ Two Fully Differential Input Channels

ꢀ 0.003% Integral Nonlinearity with No Missing Codes

ꢀ Interface with Schmitt Triggers on Inputs

ꢀ Internal Analog Input Buffers

ꢀ PGA from 1 to 128

ꢀ Single (2.7V to 3.6V) or (4.75V to 5.25V) Supply

Self-calibration and system calibration allow the MX7705

to correct for gain and offset errors. Excellent DC perfor-

mance ( 0.003ꢀ ꢁSR IꢂN) and low noise (650nV) maꢃe

the MX7705 ideal for measuring low-frequency signals

with a wide dynamic range. The device accepts fully dif-

ferential bipolar/unipolar inputs. An internal input buffer

allows for input signals with high source impedances. An

on-chip digital filter, with a programmable cutoff and out-

put data rate, processes the output of the sigma-delta

modulator. The first notch frequency of the digital filter is

chosen to provide 150dB rejection of common-mode

50Hz or 60Hz noise and 98dB rejection of normal-mode

50Hz or 60Hz noise. A PGA and digital filtering allow sig-

nals to be directly acquired with little or no signal-condi-

tioning requirements.

ꢀ Low Power

1mW (max), 3V Supply

2µA (typ) Power-Down Current

ꢀ SPI-/QSPI-/MICROWIRE-Compatible 3-Wire Serial

Interface

ꢀ 16-Pin PDIP, SO, and TSSOP Packages

Ordering Information

PART

TEMP RANGE

-40°C to +85°C

PIN-PACKAGE

16 PDIP

MX7705EPE*

MX7705EWE*

MX7705EUE

The MX7705 is available in 16-pin PDIP, SO, and

TSSOP pacꢃages.

16 WIDE SO

16 TSSOP

Applications

*Future product—contact factory for availability.

Industrial Instruments

Weigh Scales

Strain-Gauge Measurements

Noop-Powered Systems

ꢁlow and Gas Meters

Medical Instrumentation

Pressure Transducers

Thermocouple Measurements

RTD Measurements

Pin Configuration

TOP VIEW

SCLK

16 GND

CLKIN

CLKOUT

14 DIN

MX7705

13 DOUT

12 DRDY

11 AIN2-

10 REF-

RESET

AIN2+

AIN1+

AIN1-

REF+

PDIP/SO/TSSOP

SPI/QSPI are trademarks of Motorola, Inc.

MICROWIRE is a trademark of National Semiconductor Corp.

________________________________________________________________ Maxim Integrated Products

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

12 3 4 5 6 7...34

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MX7705EPE+ 替代型号

型号	品牌	替代类型	描述	数据表
MX7705EUE+T	MAXIM	完全替代	ADC, Delta-Sigma, 16-Bit, 1 Func, 2 Channel, Serial Access, BICMOS, PDSO16, 4.40 MM, MO-15
MX7705EUE+	MAXIM	完全替代	16-Bit, Low-Power, 2-Channel, Sigma-Delta ADC

与MX7705EPE+相关器件

型号	品牌	获取价格	描述	数据表
MX7705EUE	MAXIM	获取价格	16-Bit, Low-Power, 2-Channel, Sigma-Delta ADC
MX7705EUE+	MAXIM	获取价格	16-Bit, Low-Power, 2-Channel, Sigma-Delta ADC
MX7705EUE+T	MAXIM	获取价格	ADC, Delta-Sigma, 16-Bit, 1 Func, 2 Channel, Serial Access, BICMOS, PDSO16, 4.40 MM, MO-15
MX7705EUE-T	MAXIM	获取价格	ADC, Delta-Sigma, 16-Bit, 1 Func, 2 Channel, Serial Access, BICMOS, PDSO16, TSSOP-16
MX7705EWE	MAXIM	获取价格	16-Bit, Low-Power, 2-Channel, Sigma-Delta ADC
MX7705EWE+	MAXIM	获取价格	ADC, Delta-Sigma, 16-Bit, 1 Func, 2 Channel, Serial Access, BICMOS, PDSO16, SOP-16
MX7705EWE+T	MAXIM	获取价格	暂无描述
MX7705EWE-T	MAXIM	获取价格	ADC, Delta-Sigma, 16-Bit, 1 Func, 2 Channel, Serial Access, BICMOS, PDSO16, SOP-16
MX77L12850FZ4I40	Macronix	获取价格	Flash,
MX77L6450FM2I42	Macronix	获取价格	Flash,

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