TPA1285
High-Precision, High-Voltage, 2-ch Current Sense Amplifier
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Overview
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Development Resources
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Application
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Ordering Detail
Overview
The TPA1285, high-precision, high common-voltage, 2-channel high-side current sense amplifier, has very high precision accuracy specifications of Vos less than 100 μV (max) and gain error less than 0.5% (max). Three fixed gains are available: 20 V/V, 50 V/V, and 100 V/V. The low offset of the zero-drift architecture enables current sensing with maximum drops across the shunt as low as 5 mV full-scale.
The TPA1285 features an input common-mode voltage ranging from 3.0 V to 76 V with 80 kHz of smallsignal bandwidth, which makes it ideal for small signal conditioning interfacing with a SAR ADC.
The TPA1285 offers breakthrough performance throughout the −40°C to +125°C temperature range. It features a zero-drift core, which leads to a maxim offset drift of 0.4μV/°C throughout the operating temperature range and the common-mode voltage range. The TPA1285 is offered an 8-pin MSOP package.
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Status
Production
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Rating
Industrial
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Feature
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VCM Min
3
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VCM Max
76
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Vos drift Typ (μV/c)
<0.4
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Input Direction
Uni-dir
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CMRR Min (dB)
110
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BW (kHz)
60
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Gain Option
G = 20
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GE Max at full temp range (%)
0.5
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GE Drift, max (ppm/c)
10
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Vos max (μV)
100
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Ib Typ (nA)
<65, 000
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PWM Rejection
NO
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VS Min
3
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VS Max
5.5
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Iq Max (μA)
1000
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Channel
2
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Comparator
0
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Package
MSOP8
Development Resources
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Documentation
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Show FilterHidden FilterDocumentation
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Data Sheet
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Selection Guide
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Application Note
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Technical Note
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User Guide
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Test Report
- Document Name
- Type
- Language
- Date
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Data SheetEnglish03/26/2024
High Precision, High Voltage, 2ch Current Sense Amplifier
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Technical NoteEnglish01/19/2024
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Technical NoteEnglish01/19/2024
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Selection GuideEnglish01/19/2024
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Application
• Current Sensing (high side)
• Battery Chargers
• Power Management
• Automotive
• Server Backplanes
• Base Stations & Telecom Equipment
• Industrial Control and Automation
Ordering Detail
| Order Part Number | Buy | Samples | Rating | Feature | Status | 1ku Price | Release Date | Package | Lead time (week) | MSL | Packing | MPQ | CPQ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| TPA1285T-VR-S | Industrial Grade | / | Production | $2.220 | 2021-01-08 | MSOP8 | 10 | MSL3 | T&R | 3000 | 15000 |
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