INA293A3IDBVT
INA293 –4V 至 110V、1.3MHz 超精密电流检测放大器
Manufacturer
Texas Instruments
Category
Integrated Circuits (ICs)
Package
SC-74A, SOT-753
Lifecycle
Active
Overview
Part: INA293 from Texas Instruments
Type: Ultra-precision Current Sense Amplifier
Key Specs:
- Operating Common-Mode Voltage: -4 V to +110 V
- Withstand Common-Mode Voltage: -20 V to +120 V
- DC Common-Mode Rejection Ratio (CMRR): 160dB
- AC Common-Mode Rejection Ratio (CMRR): 85dB (at 50kHz)
- Gain Error: ±0.15% (maximum)
- Gain Drift: ±10ppm/°C (maximum)
- Offset Voltage: ±15μV (typical)
- Offset Voltage Drift: ±0.05μV/°C (typical)
- Bandwidth: 1.3 MHz
- Slew Rate: 2.5 V/μs
- Quiescent Current: 1.5mA
- Supply Voltage: 2.7V to 20V
- Operating Temperature Range: -40 °C to +125 °C
Features:
- Wide common-mode voltage range
- Excellent DC and AC common-mode rejection ratio
- High accuracy with low gain error and drift
- Low offset voltage and drift
- Multiple gain options: 20V/V, 50V/V, 100V/V, 200V/V, 500V/V
- High bandwidth for high-speed applications
- Negative common-mode voltage capability for recirculation current measurement
- Single supply operation
Applications:
- Active Antenna Systems (mMIMO (AAS))
- Macro Remote Radio Units (RRU)
- 48V Rack Servers
- 48V Commercial Network and Server Power Supplies (PSU)
- 48V Battery Management Systems (BMS)
Package:
- SOT-23 (5 pins): 2.90mm × 1.60mm
Pin Configuration
图 5-1. INA293A: DBV Package 5-Pin SOT-23 Top View
- NAME
- GND
- OUT
- Vs
- IN+
- IN–
4
5
表 5-1. Pin Functions
Electrical Characteristics
at TA = 25 °C, VS = 5 V, VSENSE = VIN+ - VIN- = 0.5 V / Gain, VCM = VIN- = 48 V (unless otherwise noted)
| PARAMETER | TEST CONDITIONS | MIN | TYP | MAX | UNIT | |
|---|---|---|---|---|---|---|
| INPUT | ||||||
| VCM | Common-mode input range(1) | TA = -40°C to +125°C | –4 | 110 | V | |
| CMRR | Common-mode rejection ratio, input referred | -4 V ≤ VCM ≤ 110 V, TA = -40°C to +125°C | 140 | 160 | dB |
Absolute Maximum Ratings
over operating free-air temperature range (unless otherwise noted)(1)
| MIN | MAX | UNIT | ||
|---|---|---|---|---|
| Supply Voltage (Vs) | –0.3 | 22 | V | |
| Differential (VIN+) – (VIN–), INA293A5, INA293B5 | –6 | 6 | ||
| Analog Inputs, VIN+, VIN– (2) | Differential (VIN+) – (VIN–), All others | –12 | 12 | V |
| Common - mode | –20 | 120 | ||
| Output | GND – 0.3 | Vs + 0.3 | V | |
| TA | Operating temperature | –55 | 150 | °C |
| TJ | Junction temperature | 150 | °C | |
| Tstg | Storage temperature | –65 | 150 | °C |
(1) Stresses beyond those listed under Absolute Maximum Rating may cause permanent damage to the device. These are stress ratings only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Condition. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
(2) VIN+ and VIN– are the voltages at the IN+ and IN– pins, respectively.
Recommended Operating Conditions
over operating free-air temperature range (unless otherwise noted)
| MIN | NOM | MAX | UNIT | ||
|---|---|---|---|---|---|
| VCM | Common-mode input range | –4 | 48 | 110 | V |
| VS | Operating supply range | 2.7 | 5 | 20 | V |
| VSENSE | Differential sense input range | 0 | VS / G | V | |
| TA | Ambient temperature | –40 | 40 | 125 | °C |
Thermal Information
| INA293 | UNIT | ||
|---|---|---|---|
| THERMAL METRIC(1) | DBV (SOT-23) 5 PINS | ||
| RθJA | Junction-to-ambient thermal resistance | 184.7 | °C/W |
| RθJC(top) | Junction-to-case (top) thermal resistance | 105.6 | °C/W |
| RθJB | Junction-to-board thermal resistance | 47.2 | °C/W |
| ΨJT | Junction-to-top characterization parameter | 21.5 | °C/W |
| ΨJB | Junction-to-board characterization parameter | 46.9 | °C/W |
| RθJC(bot) | Junction-to-case (bottom) thermal resistance | N/A | °C/W |
(1) For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application report.
6.5 Electrical Characteristics
at TA = 25 °C, VS = 5 V, VSENSE = VIN+ - VIN- = 0.5 V / Gain, VCM = VIN- = 48 V (unless otherwise noted)
| PARAMETER | TEST CONDITIONS | MIN | TYP | MAX | UNIT | |
|---|---|---|---|---|---|---|
| INPUT | ||||||
| VCM | Common-mode input range(1) | TA = -40°C to +125°C | –4 | 110 | V | |
| CMRR | Common-mode rejection ratio, input referred | -4 V ≤ VCM ≤ 110 V, TA = -40°C to +125°C | 140 | 160 | dB |
Related Variants
The following components are covered by the same datasheet.
| Part Number | Manufacturer | Package |
|---|---|---|
| INA293A3 | Texas Instruments | — |
| INA293A3IDBVR | Texas Instruments | — |
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