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參數(shù)資料
| 型號： | MAX1455EVKIT-CS |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 21/25頁 |
| 文件大?。?/td> | 0K |
| 描述： | EVAL KIT FOR MAX1455 |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 主要目的： | 接口，傳感器信號調(diào)節(jié)器 |
| 已用 IC / 零件： | MAX1455 |
| 已供物品： | 板 |
Detailed Description
The MAX1455 provides amplification, calibration, and
temperature compensation to enable an overall perfor-
mance approaching the inherent repeatability of the
sensor. The fully analog signal path introduces no
quantization noise in the output signal while enabling
digitally controlled trimming with the integrated 16-bit
DACs. The MAX1455 includes four selectable high/low
clipping limits set in discrete 50mV steps from
0.1V/4.9V to 0.25V/4.75V. Offset and span can be cali-
brated to within ±0.02% of span.
The MAX1455 architecture includes a programmable
sensor excitation, a 16-step PGA, a 768-byte (6144 bits)
internal EEPROM, four 16-bit DACs, an uncommitted op
amp, and an on-chip temperature sensor. The MAX1455
also provides a unique temperature compensation strat-
egy that was developed to provide a remarkable degree
of flexibility while minimizing testing costs.
The customer can select from 1 to 114 temperature
points to compensate their sensor. This allows the lati-
tude to compensate a sensor with a simple first-order
linear correction or match an unusual temperature
curve. Programming up to 114 independent 16-bit
EEPROM locations corrects performance in 1.5°C tem-
perature increments over a range of -40°C to +125°C.
For sensors that exhibit a characteristic temperature
performance, a select number of calibration points can
be used with a number of preset values that define the
temperature curve. The sensor and the MAX1455
should be at the same temperature during calibration
and use. This allows the electronics and sensor errors
to be compensated together and optimizes perfor-
mance. For applications where the sensor and elec-
tronics are at different temperatures, the MAX1455 can
use the sensor bridge as an input to correct for temper-
ature errors.
The single pin, serial DIO communication architecture
and the ability to timeshare its activity with the sensor’s
output signal enables output sensing and calibration
programming on a single line by parallel connecting
OUT and DIO. The MAX1455 provides a Secure-Lock
feature that allows the customer to prevent modification
of sensor coefficients and the 52-byte user-definable
EEPROM data after the sensor has been calibrated.
The Secure-Lock feature also provides a hardware
override to enable factory rework and recalibration by
assertion of logic high on the UNLOCK pin.
MAX1455
Low-Cost Automotive Sensor Signal
Conditioner
_______________________________________________________________________________________
5
Pin Description
PIN
NAME
FUNCTION
1, 15, 16
TEST1,
TEST3,
TEST2
Test Pins. Connect to VSS or leave unconnected.
2
OUT
Analog Output. Internal voltage nodes can be accessed in digital mode. OUT can be parallel
connected to DIO. Bypass OUT to ground with a 0.1F capacitor to reduce output noise.
3
INP
Positive Input. Can be swapped to INM by the Configuration register.
4
BDR
Bridge Drive Output
5
INM
Negative Input. Can be swapped to INP by the Configuration register.
6VSS
Negative Supply Voltage
7VDD1
Positive Supply Voltage 1. Connect a 0.1F capacitor from VDD to VSS.
8
AMP+
Auxiliary Op Amp Positive Input
9
AMPOUT
Auxiliary Op Amp Output
10
AMP-
Auxiliary Op Amp Negative Input
11
VDD2
Positive Supply Voltage 2. Connect a 0.47F capacitor from VDD2 to VSS. Connect VDD2 to VDD1 or
for improved noise performance, connect a 1k
resistor to VDD1.
12
UNLOCK
Secure-Lock Disable. There is a 150A pulldown to VSS. Connect to VDD to disable Secure-Lock
and enable serial communication.
13
DIO
Digital Input Output. Single-pin serial communication port. There are no internal pullups on DIO.
Connect pullup resistor from DIO to VDD when in digital mode.
14
TEST4
Test Pin. Do not connect.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1455EVKIT-NS | 功能描述:溫度傳感器開發(fā)工具 RoHS:否 制造商:Texas Instruments 產(chǎn)品類型:Temperature Sensors and Control ICs 工具用于評估:MSP430G2553 接口類型:USB 工作電源電壓: 工作電源電流: |
| MAX14562ETA+T | 功能描述:監(jiān)控電路 OVP w/Voltage Clamp/Protection RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| MAX14562EXT+T | 功能描述:監(jiān)控電路 OVP w/Voltage Clamp/Protection RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| MAX14566AEETA+ | 制造商:Maxim Integrated Products 功能描述:2ND GEN. USB DEVICE THAT COMBINES A USB HI-SPEED ANALOG SWI - Rail/Tube |
| MAX14566AEETA+T | 功能描述:模擬開關(guān) IC USB HiSpeed an swtch w/USB host chrgr IC RoHS:否 制造商:Texas Instruments 開關(guān)數(shù)量:2 開關(guān)配置:SPDT 開啟電阻（最大值）:0.1 Ohms 切換電壓（最大）: 開啟時間（最大值）: 關(guān)閉時間（最大值）: 工作電源電壓:2.7 V to 4.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DSBGA-16 |
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