- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄1980 > AD7195BCPZ-RL7 (Analog Devices Inc)IC AFE 24BIT 4.8K 32LFSP PDF資料下載
參數(shù)資料
| 型號(hào)： | AD7195BCPZ-RL7 |
| 廠商： | Analog Devices Inc |
| 文件頁(yè)數(shù)： | 19/45頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC AFE 24BIT 4.8K 32LFSP |
| 設(shè)計(jì)資源： | Precision Weigh Scale Design Using AD7195 with Internal PGA and AC Excitation (CN0155) |
| 標(biāo)準(zhǔn)包裝： | 1,500 |
| 位數(shù)： | 24 |
| 通道數(shù)： | 4 |
| 電壓 - 電源，模擬： | 4.75 V ~ 5.25 V |
| 電壓 - 電源，數(shù)字： | 2.7 V ~ 5.25 V |
| 封裝/外殼： | 32-WFQFN 裸露焊盤，CSP |
| 供應(yīng)商設(shè)備封裝： | 32-LFCSP-WQ（5x5） |
| 包裝： | 帶卷 (TR) |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)第17頁(yè)第18頁(yè)當(dāng)前第19頁(yè)第20頁(yè)第21頁(yè)第22頁(yè)第23頁(yè)第24頁(yè)第25頁(yè)第26頁(yè)第27頁(yè)第28頁(yè)第29頁(yè)第30頁(yè)第31頁(yè)第32頁(yè)第33頁(yè)第34頁(yè)第35頁(yè)第36頁(yè)第37頁(yè)第38頁(yè)第39頁(yè)第40頁(yè)第41頁(yè)第42頁(yè)第43頁(yè)第44頁(yè)第45頁(yè)
AD7195
Rev. 0 | Page 25 of 44
ADC CIRCUIT INFORMATION
MCLK1 MCLK2
DVDD DGND
REFIN(+)
REFIN(–)
AIN1
AIN2
AIN3
AIN4
AINCOM
BPDSW
AD7195
REFERENCE
DETECT
SERIAL
INTERFACE
AND
CONTROL
LOGIC
TEMP
SENSOR
AC
EXCITATION
CLOCK
CIRCUITRY
DOUT/RDY
DIN
SCLK
CS
SYNC
AVDD
AGND
Σ-Δ
ADC
PGA
MUX
ACX1
ACX2
08
77
1-
00
1
Figure 18. Block Diagram
OVERVIEW
The AD7195 is an ultralow noise ADC that incorporates a Σ-Δ
modulator, a buffer, PGA, and on-chip digital filtering intended
for the measurement of wide dynamic range signals, such as
those in pressure transducers, weigh scales, and strain gage
applications. Figure 18 shows the block diagram for the part.
Analog Inputs
The device can be configured to have two differential or four
pseudo differential analog inputs. The analog inputs can be
buffered or unbuffered.
Multiplexer
The on-chip multiplexer increases the channel count of the
device. Because the multiplexer is included on chip, any
channel changes are synchronized with the conversion process.
PGA
The analog input signal can be amplified using the PGA. The
PGA allows gains of 1, 8, 16, 32, 64, and 128.
Reference Detect
The AD7195 is capable of monitoring the external reference. If
the reference is not present, a flag is set in the status register of
the device.
Burnout Currents
Two 500 nA burnout currents are included on-chip to detect
the presence of the external sensor.
Σ-Δ ADC and Filter
The AD7195 contains a fourth-order Σ-Δ modulator followed
by a digital filter. The device offers the following filter options:
Sinc4
Sinc3
Chop enabled/disabled
Zero latency
AC Excitation
The AD7195 supports ac excitation of load cells. It provides the
four logic outputs needed to control the transistors in an ac
excited load cell design.
Serial Interface
The AD7195 has a 4-wire SPI. The on-chip registers are
accessed via the serial interface.
Clock
The AD7195 has an internal 4.92 MHz clock. Either this clock
or an external clock can be used as the clock source to the
AD7195. The internal clock can also be made available on a
pin if a clock source is required for external circuitry.
Temperature Sensor
The on-chip temperature sensor monitors the die temperature.
Calibration
Both internal and system calibration are included on chip; thus,
the user has the option of removing offset/gain errors internal
to the AD7195 only, or removing the offset/gain errors of the
complete end system.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AD7225BQ | IC DAC 8BIT QUAD W/AMP 24-CDIP |
| AD7226BQ | IC DAC 8BIT QUAD W/AMP 20-CDIP |
| AD7228CQ | IC DAC 8BIT OCTAL W/AMP 24-CDIP |
| AD7233BNZ | IC DAC 12BIT SRL W/AMP 8PDIP |
| AD7243BQ | IC DAC 12BIT W/AMP W/REF 16-CDIP |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD71L | 制造商:Johnson Components 功能描述:ADAPT - Bulk |
| AD72 | 制造商:Distributed By MCM 功能描述:REFRIGERATR DOOR GASKET DIRECT |
| AD720 | 制造商:AD 制造商全稱:Analog Devices 功能描述:RGB to NTSC/PAL Encoders |
| AD720-00E | 功能描述:SENSOR MAG SW 28G STANDRD 8-MSOP 制造商:nve corp/sensor products 系列:AD 包裝:管件 零件狀態(tài):有效 功能:全極開關(guān) 技術(shù):霍爾效應(yīng) 極化:任意一種 感應(yīng)范圍:±3.4mT 跳閘，±1.4mT 釋放 測(cè)試條件:-40°C ~ 125°C 電壓 - 電源:4.5 V ~ 30 V 電流 - 電源（最大值）:4.5mA 電流 - 輸出（最大值）:20mA 輸出類型:開路集電極 特性:- 工作溫度:-40°C ~ 125°C（TA） 封裝/外殼:8-TSSOP，8-MSOP（0.118"，3.00mm 寬） 供應(yīng)商器件封裝:8-MSOP 標(biāo)準(zhǔn)包裝:1,000 |
| AD720-02E | 功能描述:SENSOR MAG SW 28G STANDARD 8SOIC 制造商:nve corp/sensor products 系列:AD 包裝:管件 零件狀態(tài):有效 功能:全極開關(guān) 技術(shù):霍爾效應(yīng) 極化:任意一種 感應(yīng)范圍:±3.4mT 跳閘，±1.4mT 釋放 測(cè)試條件:-40°C ~ 125°C 電壓 - 電源:4.5 V ~ 30 V 電流 - 電源（最大值）:4.5mA 電流 - 輸出（最大值）:20mA 輸出類型:開路集電極 特性:- 工作溫度:-40°C ~ 125°C（TA） 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 供應(yīng)商器件封裝:8-SOIC 標(biāo)準(zhǔn)包裝:1,000 |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。