參數(shù)資料
型號(hào)： MX7705
廠商： Maxim Integrated Products, Inc.
英文描述： 16-Bit, Low-Power, 2-Channel, Sigma-Delta ADC
中文描述： 16位、低功耗、2通道、Σ-Δ ADC
文件頁數(shù)： 1/34頁
文件大?。?/td> 664K
代理商： MX7705
General Description
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).
Self-calibration and system calibration allow the MX7705
to correct for gain and offset errors. Excellent DC perfor-
mance (±0.003% FSR INL) and low noise (650nV) make
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.
The MX7705 is available in 16-pin PDIP, SO, and
TSSOP packages.
Applications
Industrial Instruments
Weigh Scales
Strain-Gauge Measurements
Loop-Powered Systems
Flow and Gas Meters
Medical Instrumentation
Pressure Transducers
Thermocouple Measurements
RTD Measurements
Features
o
Pin Compatible and Software Compatible with the
AD7705
o
16-Bit Sigma-Delta ADC
o
Two Fully Differential Input Channels
o
0.003% Integral Nonlinearity with No Missing Codes
o
Interface with Schmitt Triggers on Inputs
o
Internal Analog Input Buffers
o
PGA from 1 to 128
o
Single (2.7V to 3.6V) or (4.75V to 5.25V) Supply
o
Low Power
1mW (max), 3V Supply
2μA (typ) Power-Down Current
o
SPI-/QSPI-/MICROWIRE-Compatible 3-Wire Serial
Interface
o
16-Pin PDIP, SO, and TSSOP Packages
M
16-Bit, Low-Power, 2-Channel,
Sigma-Delta ADC
________________________________________________________________
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.
1
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
SCLK
GND
V
DD
DIN
DOUT
DRDY
AIN2-
REF-
REF+
TOP VIEW
MX7705
PDIP/SO/TSSOP
CLKIN
CLKOUT
AIN2+
CS
RESET
AIN1+
AIN1-
Pin Configuration
Ordering Information
19-3051; Rev 0; 10/03
PART
TEMP RANGE
-40
°
C to +85
°
C
-40
°
C to +85
°
C
-40
°
C to +85
°
C
PIN-PACKAGE
16 PDIP
16 WIDE SO
16 TSSOP
MX7705EPE*
MX7705EWE*
MX7705EUE
*
Future product—contact factory for availability.
SPI/QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
相關(guān)PDF資料
PDF描述
MX7705EPE 16-Bit, Low-Power, 2-Channel, Sigma-Delta ADC
MX7705EUE 16-Bit, Low-Power, 2-Channel, Sigma-Delta ADC
MX7705EWE 16-Bit, Low-Power, 2-Channel, Sigma-Delta ADC
MX7824LCWG CMOS, High-Speed, 8-Bit ADCs with Multiplexer
MX7828KCAI CMOS, High-Speed, 8-Bit ADCs with Multiplexer
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MX7705_09 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:16-Bit, Low-Power, 2-Channel, Sigma-Delta ADC
MX7705_10 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:16-Bit, Low-Power, 2-Channel, Sigma-Delta ADC
MX7705EPE 功能描述:模數(shù)轉(zhuǎn)換器 - ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
MX7705EPE+ 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 16-Bit 2Ch Precision ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
MX7705EUE 功能描述:模數(shù)轉(zhuǎn)換器 - ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
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