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MAX1454
Precision Sensor Signal Conditioner with Overvoltage Protection
Low-Cost, Precision Sensor Signal Conditioner
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Status
Active: In Production.
Description
The MAX1454 is a highly integrated analog sensor signal conditioner targeted for automotive applications. The device provides amplification, calibration, and temperature compensation to enable an overall performance 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 of the output. Offset and span are calibrated with integrated 16-bit DACs, allowing sensors to be truly interchangeable.
The device architecture includes a programmable sensor excitation, a 32-step programmable-gain amplifier (PGA), a 2K x 8 bits internal flash memory, four 16-bit DACs, and an on-chip temperature sensor. In addition to offset and span compensation, the device provides a unique temperature-compensation method for offset TC and FSO TC to provide a remarkable degree of flexibility while minimizing manufacturing costs.
The device is packaged in a 16-pin TSSOP and covers the automotive AEC-Q100 Grade 1 temperature range of -40°C to +125°C.
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Data Sheet
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An evaluation kit is available: MAX1454DBSYS, MAX1454EVSYS
Key Features
- Complete Signal Conditioning in a Single IC Package
- Provides Amplification, Calibration, and Temperature Compensation
- Accommodates Sensor Output Sensitivities from 1mV/V to 200mV/V
- Overvoltage Protection to 45V
- Reverse-Voltage Protection to 45V
- High-Precision Compensation Reduces Downstream Circuit Complexity
- Fully Analog Signal Path
- 16-Bit Offset and Span-Calibration Resolution
- On-Chip Lookup Table Supports Multipoint Calibration Temperature Correction
- Supports Both Current and Voltage-Bridge Excitation
- Fast 85µs Step Response
- Sensor Fault Detection
- Simple PCB Layout
- Single-Pin Digital Programming
- No External Trim Components Required
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Applications/Uses
- Humidity Sensors
- Pressure Calibrators and Controllers
- Pressure Sensors
- Resistive Element Sensors
- Strain Gauges
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Key Specifications:
| Sensor Signal Conditioners |
| Part Number |
Sensing Element |
PGA Gain |
Calibration Method |
Accuracy
(%FSO) |
Output Type |
ICC
(mA) |
IBRIDGE
(mA) |
DACs/ADCs |
VSUPPLY
(V) |
| max |
typ |
| MAX1454 |
| PRT | | Resistive Bridge | | Strain Gauge |
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6 to 2048 (32 gains) |
Internal DACs updated from internal EEPROM |
0.1 |
Analog |
2.5 |
0.1 to 2.5 |
16-bit ADC |
3 to 5.5 |
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See All Sensor Signal Conditioners (10)
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Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.
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Diagram
Functional Diagram
Reliability Reports
Software/Models
Ordering Information
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Part Number
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Free
Sample |
Buy |
Status
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Package:
TYPE PINS FOOTPRINT
DRAWING CODE/VAR *
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Temp |
RoHS/Lead-Free?
Materials Analysis
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| MAX1454AUE+
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Active |
TSSOP;16 pin;33.4 mm²
Outline Drawing:21-0066 (PDF)
Land Pattern: 90-0117 (PDF)
Use pkgcode/variation: U16M+1*
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-40°C to +125°C
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See data sheet
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| MAX1454AUE+T
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Active |
TSSOP;16 pin;33.4 mm²
Outline Drawing:21-0066 (PDF)
Land Pattern: 90-0117 (PDF)
Use pkgcode/variation: U16M+1*
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-40°C to +125°C
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See data sheet
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| MAX1454AUE/V+
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Active |
TSSOP;16 pin;33.4 mm²
Outline Drawing:21-0066 (PDF)
Land Pattern: 90-0117 (PDF)
Use pkgcode/variation: U16M+1*
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-40°C to +125°C
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See data sheet
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| MAX1454AUE/V+T
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Active |
TSSOP;16 pin;33.4 mm²
Outline Drawing:21-0066 (PDF)
Land Pattern: 90-0117 (PDF)
Use pkgcode/variation: U16M+1*
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-40°C to +125°C
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See data sheet
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Notes:
- Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
- Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
- Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt; -D = drypack; -U/+U on DS parts = cut tape. More: See Full Data Sheet or Maxim Product Naming Conventions.
- * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.
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| MAX1452 |
Low-Cost Precision Sensor Signal Conditioner |
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Information Index
Document Ref.: 19-5945
Rev 0;
2011-07-14
This page last modified: 2011-07-27
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