參數(shù)資料
型號(hào)： MAX1403EVKIT
廠商： Maxim Integrated Products
文件頁(yè)數(shù)： 28/36頁(yè)
文件大?。?/td> 0K
描述： EVAL KIT FOR MAX1403
產(chǎn)品培訓(xùn)模塊： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝： 1
ADC 的數(shù)量： 1
位數(shù)： 18
采樣率（每秒）： 480
數(shù)據(jù)接口： 串行
輸入范圍： ±VREF/增益
在以下條件下的電源（標(biāo)準(zhǔn)）： 16.9mW @ 480SPS
工作溫度： 0°C ~ 70°C
已用 IC / 零件： MAX1403
已供物品： 板，CD
MAX1403
+3V, 18-Bit, Low-Power, Multichannel,
Oversampling (Sigma-Delta) ADC
Loop-Powered, 4–20mA Transmitters
Low-power, single-supply operation, and easy interfac-
ing with optocouplers make the MAX1403 ideal for
loop-powered 4–20mA transmitters. Loop-powered
transmitters draw their power from the 4–20mA loop,
limiting the transmitter circuitry to a current budget of
4mA. Tolerances in the loop further limit this current
budget to 3.5mA. Since the MAX1403 consumes only
250A, a total of 3.25mA remains to power the remain-
ing transmitter circuitry. Figure 16 shows a block dia-
gram for a loop-powered 4–20mA transmitter.
3-Wire and 4-Wire RTD Configurations
Tightly matched 200A current sources compensate for
errors in 3-wire and 4-wire RTD configurations. In the 3-
wire configuration (Figure 17), the lead resistances
result in errors if only one current source is used. The
200A will flow through RL1 developing a voltage error
between AIN1 and AIN2. An additional current source
compensates for this error by developing an equivalent
voltage across RL2, ensuring the differential voltage at
AIN1 and AIN2 is not affected by lead resistance. This
assumes both leads are of the same material and of
equal length (RL1 = RL2), and assumes OUT1 and
OUT2 have matching tempcos (5ppm/°C). Both current
sources will flow through RL3, developing a common-
mode voltage that will not affect the differential voltage
at AIN1 and AIN2. Using one of the current sources to
supply the reference voltage ensures a more accurate
ratiometric result.
DAC
RGAIN
ROFST
RX
VIN+
VIN-
RSENSE
4–20mA LOOP
INTERFACE
RFDBK
RY
CC
ISOLATION
BARRIER
V+
GND
V+
4
SPI
4
SPI
3
SPI
GND
SENSOR
VOLTAGE
REGULATOR
P/C
MAX1403
Figure 16. 4–20mA Transmitter
C
+3V
+1.25V
REFIN+
REFIN-
AGND
DGND
R
THERMOCOUPLE
JUNCTION
SWITCHING
NETWORK
PGA
MAX1403
BUFFER
AIN1
AIN2
Figure 15. Thermocouple Application with MAX1403
34
______________________________________________________________________________________
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參數(shù)描述
MAX1403EVL11 功能描述:數(shù)據(jù)轉(zhuǎn)換 IC 開發(fā)工具 MAX1403 Eval Kit RoHS:否 制造商:Texas Instruments 產(chǎn)品:Demonstration Kits 類型:ADC 工具用于評(píng)估:ADS130E08 接口類型:SPI 工作電源電壓:- 6 V to + 6 V
MAX1403EVSYSTEM 制造商:Maxim Integrated Products 功能描述:EVALUATION SYSTEM FOR THE MAX1403 - Boxed Product (Development Kits)
MAX1406C/D 功能描述:RS-232接口集成電路 RoHS:否 制造商:Exar 數(shù)據(jù)速率:52 Mbps 工作電源電壓:5 V 電源電流:300 mA 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:LQFP-100 封裝:
MAX1406CAE 功能描述:RS-232接口集成電路 RoHS:否 制造商:Exar 數(shù)據(jù)速率:52 Mbps 工作電源電壓:5 V 電源電流:300 mA 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:LQFP-100 封裝:
MAX1406CAE+ 功能描述:RS-232接口集成電路 15kV ESD-Protected 230kbps RS-232 LD/Rc RoHS:否 制造商:Exar 數(shù)據(jù)速率:52 Mbps 工作電源電壓:5 V 電源電流:300 mA 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:LQFP-100 封裝:
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