INA260
Precision Digital Current and Power MonitorThe INA260 is a precision digital current and power monitor from Texas Instruments. View the full INA260 datasheet below including key specifications, electrical characteristics, absolute maximum ratings.
Manufacturer
Texas Instruments
Category
Precision Digital Current and Power Monitor
Key Specifications
| Parameter | Value |
|---|---|
| Packaging | MouseReel |
| Standard Pack Qty | 2000 |
Overview
Part: INA260 — Texas Instruments
Type: Precision Digital Current and Power Monitor
Description: The INA260 is a digital-output current, power, and voltage monitor with an I2C and SMBus-compatible interface and an integrated precision 2 mΩ shunt resistor, enabling high-accuracy measurements with 0.15% system gain error and 15 A continuous current capability.
Operating Conditions:
- Supply voltage: 2.7–5.5 V
- Operating temperature: -40 to +125 °C
- Common-mode input voltage: 0–36 V
Absolute Maximum Ratings:
- Max supply voltage: 6 V
- Max continuous current: ±15 A (Analog input current)
- Max junction/storage temperature: 150 °C
Key Specs:
- Current Sense Resistance: 2 mΩ
- Current Sense Resistance Tolerance: Equivalent to 0.1%
- System Current Sense Gain Error: 0.15% (Max, at 25°C, I_SENSE = -15 A to 15 A)
- Current Sense Offset (RTI): ±5 mA (Max)
- Bus Voltage Input Range: 0 V to 36 V
- Bus Voltage Gain Error: 0.1% (Max, at 25°C, V_BUS = 0 V to 36 V)
- Quiescent Current: 310 μA (Typ)
- ADC Native Resolution: 16 Bits (Current, Bus voltage, Power)
Features:
- Precision Integrated Shunt Resistor (2 mΩ, 10 ppm/°C TC)
- Senses Bus Voltages From 0 V to 36 V
- High-Side or Low-Side Sensing
- Reports Current, Voltage, and Power
- Configurable Averaging Options
- 16 Programmable Addresses
- I2C and SMBus-compatible interface
- Internal multiplier for direct readouts in amperes and watts
Applications:
- Test Equipment
- Servers
- Telecom Equipment
- Computing
- Power Management
- Battery Chargers
- Power Supplies
Package:
- TSSOP (16) (5.00 mm x 4.40 mm)
Features
- 1 · Precision Integrated Shunt Resistor:
- -Current Sense Resistance: 2 m Ω
- -Tolerance Equivalent to 0.1%
- -15-A Continuous From -40°C to +85°C
- -10 ppm/°C Temperature Coefficient (0°C to +125°C )
- Senses Bus Voltages From 0 V to 36 V
- High-Side or Low-Side Sensing
- Reports Current, Voltage, and Power
- High Accuracy:
- -0.15% System Gain Error (Maximum)
- -5-mA Offset (Maximum)
- Configurable Averaging Options
- 16 Programmable Addresses
- Operates From a 2.7-V to 5.5-V Power Supply
- 16-Pin, TSSOP Package
Applications
- Test Equipment
- Servers
- Telecom Equipment
- Computing
- Power Management
- Battery Chargers
- Power Supplies
1
Pin Configuration
Not to scale
Electrical Characteristics
at TA = 25°C, VS = 3.3 V, VIN+ = 12 V, VSENSE = (VIN+ - VIN-) = 0 mV and VVBUS = 12 V (unless otherwise noted)
| PARAMETER | TEST CONDITIONS | MIN | TYP | MAX | UNIT | |
|---|---|---|---|---|---|---|
| INPUT | ||||||
| V CM | Common-mode input range | 0 | 36 | V | ||
| Bus voltage input range (1) | 0 | 36 | V | |||
| CMRR | Common-mode rejection | 0 V ≤ V IN+ ≤ 36 V | 0 | 150 | μA/V | |
| I OS | Current sense offset, RTI (2) | ±1.25 | ±5 | mA | ||
| Current sense offset drift, RTI (2) | -40°C ≤ T A ≤ 125°C | 1 | 50 | μA/°C | ||
| PSRR | Current sense offset voltage, RTI (2) vs power supply | 2.7 V ≤ VS ≤ 5.5 V | 1.6 | 3 | mA/V | |
| V OS | Bus offset voltage, RTI (2) | ±1.25 | ±7.5 | mV | ||
| Bus offset voltage, RTI (2) vs temperature | -40°C ≤ T A ≤ 125°C | 0.6 | 40 | μV/°C | ||
| PSRR | Bus offset voltage, RTI (2) vs power supply | 1.5 | mV/V | |||
| I B | Input bias current (I IN+ , I IN- pins) VBUS input impedance | (IN+ pin) + (IN- pin), I SENSE = 0A | 17 830 | μA k Ω | ||
| Input leakage (3) | (IN+ pin) + (IN- pin), power-down mode | 0.1 | 0.5 | μA | ||
| DC ACCURACY | ||||||
| System current sense gain error | I SENSE = -15 A to 15 A, T A = 25°C I SENSE = -10 A to 10 A, -40°C ≤ T A ≤ 125°C | 0.02% 0.2% | 0.15% 0.5% | |||
| -40°C ≤ T A ≤ 125°C V BUS = 0 V to 36 V, T A = 25°C | 10 0.02% | 35 0.1% | ppm/°C | |||
| Bus voltage gain error | V BUS = 0 V to 36 V, -40°C ≤ T A ≤ 125°C | 0.1% | 0.4% | |||
| -40°C ≤ T A ≤ 125°C | 15 | 40 | ppm/°C | |||
| INTEGRATED | ADC ADC native resolution | Current | 16 1.25 | Bits mA | ||
| 1-LSB step size | Bus voltage Power | 1.25 10 | mV mW | |||
| t CT | CT bit = 000 CT bit = 001 CT bit = 010 CT bit = 011 | 140 204 332 588 | 154 224 365 646 | μs | ||
| ADC conversion time | CT bit = 100 CT bit = 101 | 1.1 2.116 | 1.21 2.328 | |||
| Differential nonlinearity | CT bit = 110 CT bit = 111 | 4.156 8.244 ±0.1 | 4.572 9.068 | ms LSB | ||
| INTEGRATED | SHUNT | |||||
| Package resistance | IN+ to IN- | 4.5 | m Ω | |||
| Maximum continuous current Short time overload change | -40°C ≤ T A ≤ 85°C I SENSE = 30 A for 5 seconds | ±0.05% | ±15 | A |
Absolute Maximum Ratings
over operating free-air temperature range (unless otherwise noted) (1)
| MIN | MAX | UNIT | ||
|---|---|---|---|---|
| Analog input current | Continuous Conduction | ±15 | A | |
| Analog inputs: IN+, IN- | Common-mode (V IN+ + V IN- ) / 2 | -0.3 | 40 | V |
| Voltage | Supply, VS | 6 | V | |
| Voltage | VBUS pin | -0.3 | 40 | V |
| Voltage | SDA, SCL, ALERT | -0.3 | 6 | V |
| Voltage | Address Pins, A0, A1 | -0.3 | VS + 0.3 | V |
| Open-drain digital output current, I OUT | 10 | mA | ||
| Temperature | Junction, T J | 150 | °C | |
| Temperature | Storage, T stg | -65 | 150 | °C |
Recommended Operating Conditions
over operating free-air temperature range (unless otherwise noted)
| MIN | NOM | MAX | UNIT | ||
|---|---|---|---|---|---|
| V CM | Common-mode input voltage | 0 | 36 | V | |
| VS | Operating supply voltage | 2.7 | 5.5 | V | |
| T A | Operating free-air temperature | -40 | 125 | °C |
Thermal Information
| THERMAL METRIC | (1) | INA260 PW (TSSOP) | UNIT |
|---|---|---|---|
| 16 PINS | |||
| R θ JA | Junction-to-ambient thermal resistance | 115.6 | °C/W |
| R θ JC(top) | Junction-to-case (top) thermal resistance | 50.1 | °C/W |
| R θ JB | Junction-to-board thermal resistance | 46.8 | °C/W |
| ψ JT | Junction-to-top characterization parameter | 3.3 | °C/W |
| ψ JB | Junction-to-board characterization parameter | 46.5 | °C/W |
| R θ JC(bot) | Junction-to-case (bottom) thermal resistance | N/A | °C/W |
Typical Application
The INA260 is a current shunt and power monitor with an I 2 C-compatible interface. The device monitors both a shunt current and bus supply voltage. The internally calibrated integrated current sense resistor combined with an internal multiplier, enable direct readouts of current in amperes and power in watts.
Related Variants
The following components are covered by the same datasheet.
| Part Number | Manufacturer | Package |
|---|---|---|
| INA260AIPW | Texas Instruments | — |
| INA260AIPWR | Texas Instruments | TSSOP-16 |
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