INA230
Current, Voltage and Power MonitorThe INA230 is a current, voltage and power monitor from Texas Instruments. View the full INA230 datasheet below including electrical characteristics, absolute maximum ratings.
Manufacturer
Texas Instruments
Category
Current, Voltage and Power Monitor
Package
RGT (VQFN-16)
Overview
Part: INA230 — Texas Instruments
Type: Current-shunt and power monitor
Description: A 36-V, 16-bit, I2C output current, voltage, and power monitor with 0 V to 36 V bus voltage sensing, 0.3% gain error, and 25 μV offset, supporting high- or low-side sensing.
Operating Conditions:
- Supply voltage: 2.7 V to 5.5 V
- Operating temperature: -40°C to +125°C
- Common-mode input range: 0 V to 36 V
Absolute Maximum Ratings:
- Max supply voltage (Vs): 6 V
- Max differential voltage (VIN+ - VIN-): -40 V to 40 V
- Max common-mode voltage (VIN+, VIN-): 40 V
- Max junction temperature (Tj): 150 °C
- Max storage temperature (Tstg): 150 °C
Key Specs:
- Shunt voltage input range: -81.92 mV to 81.9175 mV
- Common-mode rejection (CMRR): 120 dB (min) at VCM = 0 V to 36 V, TA = -40°C to 125°C
- Shunt offset voltage (Vos): ±25 μV (max) at VCM = 12 V
- ADC Resolution: 16 Bits
- Shunt voltage gain error: ±0.3 % (max)
- Bus voltage gain error: ±0.3 % (max)
- Quiescent current (IQ): 420 μA (max) at VSENSE = 0 mV
- I2C clock frequency (Fast Mode): 1 kHz to 400 kHz
- I2C clock frequency (High-Speed Mode): 10 kHz to 3400 kHz
Features:
- Bus voltage sensing from 0 V to 36 V
- High- or low-side sensing
- Current, voltage, and power reporting
- High accuracy: 0.3% gain error (maximum), 25-μV offset (maximum)
- Configurable averaging options
- Programmable alert threshold
- 16 programmable I2C addresses
Applications:
- Servers
- Computers
- Power management
- Battery chargers
- Power supplies
- Test equipment
- Telecom equipment
Package:
- VQFN (16) - 3.00 mm × 3.00 mm
- VSSOP (10) - 3.00 mm × 3.00 mm
Features
- Bus voltage sensing from 0 V to 36 V
- High- or low-side sensing
- Current, voltage, and power reporting
- High accuracy:
- -0.3% gain error (maximum)
- -25-μV offset (maximum)
- Configurable averaging options
- Programmable alert threshold
- Power supply operation: 2.7 V to 5.5 V
- Packages:
- -16-pin RGT (VQFN)
- -10-pin DGS (VSSOP)
Applications
- Servers
- Computers
- Power management
- Battery chargers
- Power supplies
- Test equipment
- Telecom equipment
Typical Application
Pin Configuration
Figure 6-1. RGT Package 16-Pin VQFN (Top View)
Table 5-1. Related Products
Figure 6-2. DGS Package 10-Pin VSSOP (Top View)
Table 6-1. Pin Functions
| PIN | PIN | PIN | TYPE | DESCRIPTION |
|---|---|---|---|---|
| NAME | VQFN | VSSOP | TYPE | DESCRIPTION |
| A0 | 2 | 2 | Digital input | Address pin. Connect to GND, SCL, SDA, or V S . Table 8-2 shows pin settings and corresponding addresses. |
| A1 | 1 | 1 | Digital input | Address pin. Connect to GND, SCL, SDA, or V S . Table 8-2 shows pin settings and corresponding addresses. |
| ALERT | 3 | 3 | Digital output | Multi-functional alert, open-drain output. |
| GND | 10 | 7 | Analog | Ground |
| NC | 6, 7, 8, 14, 15, 16 | - | - | No internal connection |
| SCL | 5 | 5 | Digital input | Serial bus clock line, open-drain input. |
| SDA | 4 | 4 | Digital input/output | Serial bus data line, open-drain input/output. |
| VBUS | 11 | 8 | Analog input | Bus voltage input |
| IN- | 12 | 9 | Analog input | Negative differential shunt voltage input. For high-side applications, connect to load side of sense resistor. For low-side applications, connect to ground side of sense resistor. |
| IN+ | 13 | 10 | Analog input | Positive differential shunt voltage input. For high-side applications, connect to bus voltage side of sense resistor. For low-side applications, connect to load side of sense resistor. |
| V S | 9 | 6 | Analog | Power supply, 2.7 V to 5.5 V. |
| Thermal Pad | - | PAD | - | This pad can be connected to ground or left floating. |
Electrical Characteristics
at T A = 25°C, VS = 3.3 V, V SENSE = V IN+ - V IN- = 0 mV, VIN- = VBUS = 12V (unless otherwise noted)
| PARAMETER | TEST CONDITIONS | MIN | TYP | MAX | UNIT | |
|---|---|---|---|---|---|---|
| INPUT | INPUT | INPUT | INPUT | INPUT | INPUT | INPUT |
| Shunt voltage input range | -81.92 | 81.9175 | mV | |||
| CMRR | Common-mode rejection | V CM = 0 V to 36 V, T A = -40°C to 125°C | 120 | 140 | dB | |
| V os | Shunt offset voltage | V CM = 12 V | -9.8 | ±25 | μV | |
| dV os /dT | Shunt offset voltage drift | T A = -40°C to +125°C | ±0.05 | ±0.1 | μV/°C | |
| PSRR SHUNT | Power supply rejection ratio (Current measurements) | -3.0 | μV/V | |||
| V os_b | Bus offset Voltage | +2.3 | ±15 | mV | ||
| dV os_b /dT | Bus offset voltage drift | T A = -40°C to +125°C | ±40 | μV/°C | ||
| PSRR BUS | Power supply rejection ratio (Voltage measurements) | 0.4 | mV/V | |||
| Z BUS | BUS input impedance | 830 | kΩ | |||
| I B | Input bias current | IN+, IN-, Current measurement mode | 10 | μA | ||
| I B_SHDWN | Input Leakage | IN+, IN-, Shutdown Mode | 0.1 | 0.5 | μA | |
| DC ACCURACY | DC ACCURACY | DC ACCURACY | DC ACCURACY | DC ACCURACY | DC ACCURACY | DC ACCURACY |
| ADC Resolution | T A = -40°C to 125°C | 16 | Bits | |||
| 1 LSB step size | Shunt Voltage | 2.5 | μV | |||
| 1 LSB step size | Bus Voltage | 1.25 | mV | |||
| G SERR | ADC Conversion-time | CT bit = 000 | 140 | 154 | μs | |
| ADC Conversion-time | CT bit = 001 | 204 | 224 | μs | ||
| ADC Conversion-time | CT bit = 010 | 332 | 365 | μs | ||
| ADC Conversion-time | CT bit = 011 | 588 | 646 | μs | ||
| ADC Conversion-time | CT bit = 100 | 1.100 | 1.21 | ms | ||
| ADC Conversion-time | CT bit = 101 | 2.116 | 2.328 | ms | ||
| ADC Conversion-time | CT bit = 110 | 4.156 | 4.572 | ms | ||
| CT bit = 111 | 8.244 | 9.068 | ms | |||
| Shunt voltage gain error | ±0.010 | ±0.3 | % | |||
| G S_DRFT | Shunt voltage gain error drift | T A = -40°C to +125°C | 10 | 50 | ppm/°C | |
| G BERR | Bus voltage gain error | ±0.010 | ±0.3 | % | ||
| G B_DRFT | Bus voltage gain error drift | T A = -40°C to +125°C | 10 | 50 | ppm/°C | |
| DNL | Differential Non-Linearity | ±0.1 | LSB | |||
| POWER SUPPLY | POWER SUPPLY | POWER SUPPLY | POWER SUPPLY | POWER SUPPLY | POWER SUPPLY | POWER SUPPLY |
| I Q | Quiescent current | V SENSE = 0 mV | 330 | 420 | μA | |
| Shutdown | 0.5 | 2 | μA | |||
| at T A = 25°C, V S = 3.3 V, V SENSE = V IN+ - V IN- = 0 mV, V IN- = V BUS = 12V (unless otherwise noted) | at T A = 25°C, V S = 3.3 V, V SENSE = V IN+ - V IN- = 0 mV, V IN- = V BUS = 12V (unless otherwise noted) | at T A = 25°C, V S = 3.3 V, V SENSE = V IN+ - V IN- = 0 mV, V IN- = V BUS = 12V (unless otherwise noted) | at T A = 25°C, V S = 3.3 V, V SENSE = V IN+ - V IN- = 0 mV, V IN- = V BUS = 12V (unless otherwise noted) | at T A = 25°C, V S = 3.3 V, V SENSE = V IN+ - V IN- = 0 mV, V IN- = V BUS = 12V (unless otherwise noted) | at T A = 25°C, V S = 3.3 V, V SENSE = V IN+ - V IN- = 0 mV, V IN- = V BUS = 12V (unless otherwise noted) | at T A = 25°C, V S = 3.3 V, V SENSE = V IN+ - V IN- = 0 mV, V IN- = V BUS = 12V (unless otherwise noted) |
| PARAMETER | PARAMETER | TEST CONDITIONS | MIN | TYP | MAX | UNIT |
| SMBUS | SMBUS | SMBUS | SMBUS | SMBUS | SMBUS | SMBUS |
| SMBUS timeout | 28 | 35 | ms | |||
| DIGITAL INPUT / OUTPUT | DIGITAL INPUT / OUTPUT Input capacitance | DIGITAL INPUT / OUTPUT | DIGITAL INPUT / OUTPUT | DIGITAL INPUT / OUTPUT 3 | DIGITAL INPUT / OUTPUT | DIGITAL INPUT / OUTPUT pF |
| V IH | Logic input level, high | 0.7 × V S | 6 | V | ||
| V IL | Logic input level, low | -0.5 | 0.3 × V S | V | ||
| V HYS | Hysteresis | 500 | mV | |||
| V OL | Logic output level, low | I OL = 3 mA | 0 | 0.4 | V | |
| Digital leakage input current | 0 ≤ V INPUT ≤ V S | 0.1 | 1 | μA |
Absolute Maximum Ratings
over operating free-air temperature range (unless otherwise noted) (1)
| MIN | MAX | UNIT | ||
|---|---|---|---|---|
| V s | Supply Voltage | 6 | V | |
| V IN+ , V IN- | Differential (V IN+ ) - (V IN- ) | -40 | 40 | V |
| V IN+ , V IN- | Common - mode | GND - 0.3 | 40 | V |
| V IO | SDA, ALERT, A0 | GND - 0.3 | 6 | V |
| V IO | SCL | GND - 0.3 | V S + 0.3 | V |
| Input current into any pin | 5 | mA | ||
| Open-drain digital output current (SDA, ALERT) | 10 | mA | ||
| T A | Operating Temperature | -55 | 150 | °C |
| T J | Junction temperature | 150 | °C | |
| T stg | Storage temperature | -65 | 150 | °C |
Recommended Operating Conditions
over operating free-air temperature range (unless otherwise noted)
| MIN | NOM | MAX | UNIT | ||
|---|---|---|---|---|---|
| V CM | Common-mode input range | 0 | 36 | V | |
| V S | Operating supply range | 2.7 | 5.5 | V | |
| T A | Ambient temperature | -40 | 125 | °C |
Thermal Information
| INA230 | INA230 | ||
|---|---|---|---|
| THERMAL METRIC (1) | THERMAL METRIC (1) | DGS (VSSOP) | RGT(QFN) |
| 10 PINS | 16 PINS | ||
| R θJA | Junction-to-ambient thermal resistance | 162.8 | 46.1 |
| R θJC(top) | Junction-to-case (top) thermal resistance | 58.6 | 58.4 |
| R θJB | Junction-to-board thermal resistance | 83.9 | 19.1 |
| Ψ JT | Junction-to-top characterization parameter | 7.6 | 1.3 |
| Y JB | Junction-to-board characterization parameter | 82.4 | 19.1 |
| R θJC(bot) | Junction-to-case (bottom) thermal resistance | n/a | 4.7 |
Typical Application
The INA230 measures the voltage developed across a current-sensing resistor (RSHUNT) when current passes through it. The device also measures the bus supply voltage and can calculate power when calibrated. It comes with alert capability where the alert pin can be programmed to respond to a user-defined event or to a conversion ready notification. This design illustrates the ability of the alert pin to respond to a set threshold.
Related Variants
The following components are covered by the same datasheet.
| Part Number | Manufacturer | Package |
|---|---|---|
| INA230AIDGSR | Texas Instruments | VSSOP-10 |
| INA230AIRGTR | Texas Instruments | VQFN-16-EP(3x3) |
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