- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄10753 > AD7195BCPZ (Analog Devices Inc)IC AFE 24BIT 4.8K 32LFSP PDF資料下載
參數(shù)資料
| 型號： | AD7195BCPZ |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 15/45頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC AFE 24BIT 4.8K 32LFSP |
| 設(shè)計資源： | Precision Weigh Scale Design Using AD7195 with Internal PGA and AC Excitation (CN0155) |
| 標準包裝： | 1 |
| 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： | 托盤 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁當(dāng)前第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁
AD7195
Rev. 0 | Page 21 of 44
Table 23. Operating Modes
MD2
MD1
MD0
Mode
0
Continuous conversion mode (default). In continuous conversion mode, the ADC continuously performs
conversions and places the result in the data register. The DOUT/RDY pin and the RDY bit in the status register
go low when a conversion is complete. The user can read these conversions by setting the CREAD bit in the commu-
nications register to 1, which enables continuous read. When continuous read is enabled, the conversions are
automatically placed on the DOUT line when SCLK pulses are applied. Alternatively, the user can instruct the ADC
to output each conversion by writing to the communications register. After power-on, a reset, or a reconfiguration
of the ADC, the complete settling time of the filter is required to generate the first valid conversion. Subsequent
conversions are available at the selected output data rate, which is dependent on filter choice.
0
1
Single conversion mode. When single conversion mode is selected, the ADC powers up and performs a single
conversion on the selected channel. The internal clock requires up to 1 ms to power up and settle. The ADC then
performs the conversion, which requires the complete settling time of the filter. The conversion result is placed in
the data register. RDY goes low, and the ADC returns to power-down mode. The conversion remains in the data
register until another conversion is performed. RDY remains active (low) until the data is read or another conversion
is performed.
0
1
0
Idle mode. In idle mode, the ADC filter and modulator are held in a reset state even though the modulator clocks are
still provided.
0
1
Power-down mode. In power-down mode, all AD7195 circuitry, except the bridge power-down switch, is powered
down. The bridge power-down switch remains active because the user may need to power up the sensor prior to
powering up the AD7195 for settling reasons. The external crystal, if selected, remains active.
1
0
Internal zero-scale calibration. An internal short is automatically connected to the input. RDY goes high when the
calibration is initiated and returns low when the calibration is complete. The ADC is placed in idle mode following a
calibration. The measured offset coefficient is placed in the offset register of the selected channel.
1
0
1
Internal full-scale calibration. A full-scale input voltage is automatically connected to the input for this calibration.
RDY goes high when the calibration is initiated and returns low when the calibration is complete. The ADC is placed
in idle mode following a calibration. The measured full-scale coefficient is placed in the full-scale register of the
selected channel. A full-scale calibration is required each time the gain of a channel is changed to minimize the full-
scale error.
1
0
System zero-scale calibration. The user should connect the system zero-scale input to the channel input pins as
selected by the CH7 to CH0 bits in the configuration register. RDY goes high when the calibration is initiated and
returns low when the calibration is complete. The ADC is placed in idle mode following a calibration. The measured
offset coefficient is placed in the offset register of the selected channel. A system zero-scale calibration is required
each time the gain of a channel is changed.
1
System full-scale calibration. The user should connect the system full-scale input to the channel input pins as
selected by the CH7 to CH0 bits in the configuration register. RDY goes high when the calibration is initiated and
returns low when the calibration is complete. The ADC is placed in idle mode following a calibration. The measured
full-scale coefficient is placed in the full-scale register of the selected channel. A full-scale calibration is required
each time the gain of a channel is changed.
CONFIGURATION REGISTER
(RS2, RS1, RS0 = 0, 1, 0; Power-On/Reset = 0x000117)
The configuration register is a 24-bit register from which data can be read or to which data can be written. This register is used to
configure the ADC for unipolar or bipolar mode, to enable or disable the buffer, to enable or disable the burnout currents, to select the
gain, and to select the analog input channel. Table 24 outlines the bit designations for the filter register. CON0 through CON23 indicate
the bit locations. CON denotes that the bits are in the configuration register. CON23 denotes the first bit of the data stream. The number
in parentheses indicates the power-on/reset default status of that bit.
CON23
CON22
CON21
CON20
CON19
CON18
CON17
CON16
CHOP(0)
ACX(0)
0
CON15
CON14
CON13
CON12
CON11
CON10
CON9
CON8
CH7(0)
CH6(0)
CH5(0)
CH4(0)
CH3(0)
CH2(0)
CH1(0)
CH0(1)
CON7
CON6
CON5
CON4
CON3
CON2
CON1
CON0
BURN(0)
REFDET(0)
0
BUF(1)
U/B (0)
G2(1)
G1(1)
G0(1)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX9140EUK+T | IC COMPARATOR R-R SOT23-5 |
| V300C2M50BL3 | CONVERTER MOD DC/DC 2V 50W |
| AD9978BCPZ | IC PROCESSOR CCD 14BIT 40-LFCSP |
| AD73360ASUZ | IC ANALOG FRONT END 6CH 44-TQFP |
| MAX9026EBT+T | IC COMPARATOR BTR 6-UCSP |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD7195BCPZ | 制造商:Analog Devices 功能描述:IC ADC 24BIT 4.8KSPS CSP-32 |
| AD7195BCPZ-RL | 功能描述:IC AFE 24BIT 4.8K 32LFSP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模擬前端 (AFE) 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:- 位數(shù):- 通道數(shù):2 功率（瓦特）:- 電壓 - 電源，模擬:3 V ~ 3.6 V 電壓 - 電源，數(shù)字:3 V ~ 3.6 V 封裝/外殼:32-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:32-QFN（5x5） 包裝:帶卷 (TR) |
| AD7195BCPZ-RL7 | 功能描述:IC AFE 24BIT 4.8K 32LFSP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模擬前端 (AFE) 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:- 位數(shù):- 通道數(shù):2 功率（瓦特）:- 電壓 - 電源，模擬:3 V ~ 3.6 V 電壓 - 電源，數(shù)字:3 V ~ 3.6 V 封裝/外殼:32-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:32-QFN（5x5） 包裝:帶卷 (TR) |
| 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 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。