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参数资料
| 型号： | MAX1459CAP+T |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | 模拟信号调理 |
| 英文描述： | 2-Wire, 4-20mA Smart Signal Conditioner |
| 中文描述： | SPECIALTY ANALOG CIRCUIT, PDSO20 |
| 封装： | SSOP-20 |
| 文件页数： | 20/24页 |
| 文件大小： | 243K |
| 代理商： | MAX1459CAP+T |
MAX1459
2-Wire, 4–20mA
Smart Signal Conditioner
_______________________________________________________________________________________
5
Temperature Sensor Terminal 1
TEMP1
16
Temperature Sensor Terminal 2. RTEMP is a 100k
temperature-dependent resistor with 4600ppm/°C
tempco.
TEMP2
17
Output Voltage. OUT is a Rail-to-Rail output that can drive resistive loads down to 10k
and capacitive
loads up to 0.1F.
OUT
11
Negative Power Supply
VSS
12
Sensor Excitation Current Output. The current source that drives the bridge.
BDRIVE
13
Positive Sensor Input. Input impedance is typically 1M
. Rail-to-rail input range.
INP
14
Negative Sensor Input. Input impedance is typically 1M
. Rail-to-rail input range.
INM
15
Auxiliary Op Amp Negative Input
AMP-
7
Auxiliary Op Amp Output
AMPOUT
8
Input pin for an External Temperature-Dependent Reference Voltage for FSOTC DAC and OTC DAC. In the
default mode, the MAX1459 uses the temperature-dependent bridge drive voltage as the FSOTC DAC and
OTC DAC reference.
TEMPIN
9
Current Source Reference. An internal 100k
resistor (RISRC) connects ISRC to VSS (see Functional
Diagram). Optionally, external resistors can be used in place of or in parallel with RFTC and RISRC.
ISRC
10
Auxiliary Op Amp Positive Input
AMP+
6
Buffered Full-Span Output Temperature Coefficient DAC Output. An internal 100k
resistor (RFTC) con-
nects FSOTC to ISRC (see Functional Diagram). Optionally, external resistors can be used in place of or in
parallel with RFTC and RISC.
FSOTC
5
Write Enable, Dual-Function Input Pin. Used to enable EEPROM erase/write operations. Also used to set
the DAC refresh-rate mode. Internally pulled to VDD with a 1M
(typ) resistor. See the Chip-Select (CS)
and Write-Enable (WE) section.
WE
4
Data Input/Output. Used only during programming/testing. Internally pulled to VSS with a 1M
(typical)
resistor. High impedance when CS is low.
DIO
3
Positive Power-Supply Input. Connect a 0.1F capacitor from VDD to VSS.
VDD
20
Clock Output, nominally 50kHz
CK50
18
Chip Current Bias Source. Connect an external 402k
±1% resistor between VDD and NBIAS.
NBIAS
19
Pin Description
1
Chip-Select Input. The MAX1459 is selected when this pin is high. When low, OUT and DIO become high
impedance. Internally pulled to VDD with a 1M
(typical) resistor. Leave unconnected for normal operation.
CS
2
Data Clock Input. Used only during programming/testing. Internally pulled to VSS with a 1M
(typical) resistor.
Data is clocked in on the rising edge of the clock. Recommended SCLK frequency is below 50kHz.
SCLK
PIN
FUNCTION
NAME
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
相关PDF资料 |
PDF描述 |
|---|---|
| MAX1459AAP+T | 2-Wire, 4-20mA Smart Signal Conditioner |
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| MAX1459AAP+ | 2-Wire, 4-20mA Smart Signal Conditioner |
| MAX147BEAP+ | +2.7V, Low-Power, 8-Channel, Serial 12-Bit ADCs |
| MAX147BEAP+T | +2.7V, Low-Power, 8-Channel, Serial 12-Bit ADCs |
相关代理商/技术参数 |
参数描述 |
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| MAX145ACPA | 功能描述:模数转换器 - ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| MAX145ACPA+ | 功能描述:模数转换器 - ADC 12-Bit 108ksps 5.25V High Speed ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| MAX145ACUA | 功能描述:模数转换器 - ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| MAX145ACUA+ | 功能描述:模数转换器 - ADC 12-Bit 108ksps 5.25V High Speed ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| MAX145ACUA+T | 功能描述:模数转换器 - ADC 12-Bit 108ksps 5.25V High Speed ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
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