TPA148
3-V to 120-V VCM, High-Precision, 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 TPA148 is a series of high-common-voltage, high-side current-sense amplifiers, which has very high precision and accuracy specifications of VOS less than 100 μV (max) and gain error less than 0.7% (max). Five fixed gains are available: 20 V/V, 50 V/V, 100 V/V, 200 V/V, and 500 V/V. These gain options provide a wide dynamic range for current-sensing applications.
The TPA148 features an input common-mode voltage range from 3.0 V to 120 V with 80 kHz of smallsignal bandwidth, which makes it ideal for small-signal conditioning interfacing with a SAR ADC.
The TPA148 offers breakthrough performance throughout the −40°C to +125°C temperature range. It features a zero-drift core, which leads to a maximum offset drift of 0.5 μV/°C throughout the operating temperature range and the common-mode voltage range. The package of TPA148 is SOT23-5.
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Status
Production
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Rating
Industrial
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Features
3-V to 120-V VCM, 80 kHz, High-Precision, Current-Sense Amplifier
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VCM Min
3
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VCM Max
120
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Vos drift Typ (μV/c)
0.2
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Input Direction
Uni-dir
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CMRR (Min) (dB)
110
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BW (kHz)
80
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Gain Option
G = 20, 50, 100, 200, 500
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GE Max at full temp range (%)
±0.7
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GE Drift, max (ppm/c)
12
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Vos max (μV)
±100
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Ib (Typ) (nA)
50000
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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)
0.45
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Number of Channels
1
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Comparator
0
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Package
SOT23-5
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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Newsletter
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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
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- Date
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Selection GuideEnglish07/02/2025
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Data SheetEnglish09/25/2025
3-V to 120-V VCM, High-Precision, Current-Sense Amplifier
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Technical NoteEnglish01/19/2024
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Technical NoteEnglish01/19/2024
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Technical NoteEnglish01/19/2024
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Application
• Current Sensing (High−Side)
• Battery Chargers
• Power Management
• Automotive
• Server Backplanes
• Base Stations and 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| TPA148A3-S5TR-S | Industrial Grade | / | Production | / | 2024-12-18 | SOT23-5 | 18 | MSL3 | T&R | 3000 | 120000 |
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