INA597IDGKT - Precision 2MHz Difference Amplifier | TI
MPN: INA597IDGKT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.85 | $2.85 |
| 10 | $2.56 | $25.60 |
| 100 | $2.28 | $228.00 |
| 500 | $2.05 | $1,025.00 |
| 1,000 | $1.85 | $1,850.00 |
Drop-in alternatives for INA597IDGKT — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
INA597IDGKR
✅ Drop-In📋 Reference alternative (not in catalog)
INA597AIDGKT
✅ Drop-In📋 Reference alternative (not in catalog)
INA597AIDGKR
✅ Drop-In📋 Reference alternative (not in catalog)
INA597IDGKT Maximum Ratings & Electrical Characteristics
| Amplifier Type | Difference Amplifier |
| Number of Circuits | 1 |
| Output Type | Rail-to-Rail |
| Slew Rate | [DATA_NEEDED: Slew Rate] |
| Gain Bandwidth Product | 2 MHz |
| Current - Input Bias | [DATA_NEEDED: Input Bias Current] |
| Voltage - Input Offset | 200 µV (max) |
| Current - Supply | [DATA_NEEDED: Supply Current] |
| Voltage - Supply Span (Min) | 4.5 V |
| Voltage - Supply Span (Max) | 36 V |
| Operating Temperature | -40°C to +125°C |
| Package / Case | 8-VSSOP (DGK) |
| Mounting Type | Surface Mount |
| CMRR | 88 dB |
| Offset Drift | 5 µV/°C |
| RoHS Status | Compliant |
INA597IDGKT Pin Configuration
| Pin 1 | OUT — Output |
| Pin 2 | GND — Ground |
| Pin 3 | IN- — Inverting input |
| Pin 4 | IN+ — Non-inverting input |
| Pin 5 | REF — Reference voltage input |
| Pin 6 | V- — Negative supply (or ground in single-supply) |
| Pin 7 | V+ — Positive supply |
| Pin 8 | NC — No connect |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
INA597IDGKT is suitable for 6 applications: Motor Current Sensing, Battery Management Systems, Precision Data Acquisition, Industrial Process Control, Audio Signal Conditioning, Automotive Sensor Interfaces.
Motor Current Sensing
The INA597IDGKT is ideal for motor current sensing in industrial and automotive applications. Its low offset voltage (200 µV) and high CMRR (88 dB) enable accurate measurement of current through a shunt resistor. The wide supply range (up to 36 V) supports high-side sensing in motor drives. The 2 MHz bandwidth allows monitoring of fast current transients, while the rail-to-rail output maximizes dynamic range. In a typical circuit, the shunt resistor is placed in series with the motor, and the INA597 amplifies the voltage drop, providing a ground-referenced output for the ADC. The device's low power consumption is beneficial in battery-powered tools.
Recommended
Battery Management Systems
In battery management systems (BMS), the INA597IDGKT accurately measures charge and discharge currents. Its low offset (200 µV) ensures precise coulomb counting, and the wide supply range (up to 36 V) accommodates multi-cell battery packs. The high CMRR (88 dB) rejects common-mode noise from the battery stack. The device's rail-to-rail output allows direct interface with ADCs in the BMS controller. The small VSSOP package saves board space in compact battery packs. The operating temperature range of -40°C to +125°C ensures reliable operation in automotive and industrial environments.
Recommended
Precision Data Acquisition
The INA597IDGKT is well-suited for precision data acquisition systems, such as those used in test and measurement equipment. Its low offset voltage (200 µV) and low drift (5 µV/°C) ensure accurate signal conditioning over temperature. The 2 MHz bandwidth supports high-speed sampling, while the 88 dB CMRR rejects common-mode interference. The device can be used to amplify small differential signals from sensors, such as thermocouples or strain gauges, before digitization. The rail-to-rail output maximizes the ADC's input range, and the wide supply range allows integration into various system architectures.
Recommended
Industrial Process Control
In industrial process control, the INA597IDGKT is used to condition signals from sensors such as pressure transducers and flow meters. Its high CMRR (88 dB) rejects noise from long cable runs, and the wide supply range (up to 36 V) is compatible with 24 V industrial buses. The low offset (200 µV) ensures accurate measurement of small sensor signals. The device's rail-to-rail output allows direct connection to PLC analog input modules. The -40°C to +125°C operating range makes it suitable for harsh factory environments. The small VSSOP package is ideal for space-constrained control modules.
Recommended
Audio Signal Conditioning
The INA597IDGKT can be used in audio applications for balanced line receivers and differential signal conditioning. Its 2 MHz bandwidth is sufficient for audio frequencies, and the low distortion (implied by precision specs) ensures high-fidelity signal transmission. The high CMRR (88 dB) rejects common-mode noise in balanced audio lines, improving signal-to-noise ratio. The rail-to-rail output allows maximum headroom in single-supply audio systems. The low power consumption is beneficial in portable audio devices. The small VSSOP package is suitable for compact audio interfaces.
Recommended
Automotive Sensor Interfaces
The INA597IDGKT is suitable for automotive sensor interfaces, such as those used in engine control and safety systems. Its wide supply range (up to 36 V) handles automotive battery voltage variations, and the high CMRR (88 dB) rejects noise from the vehicle's electrical system. The low offset (200 µV) ensures accurate measurement of sensor signals, such as those from throttle position sensors or current shunts. The -40°C to +125°C operating range meets automotive temperature requirements. The small VSSOP package is ideal for space-constrained electronic control units (ECUs).
Recommended
Recommended Products Summary
Engineering reference data for INA597IDGKT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | INA597IDGKR | INA597AIDGKT | AD629ARZ |
|---|---|---|---|---|
| Package | 8-VSSOP (DGK) | 8-VSSOP (DGK) | 8-VSSOP (DGK) | 8-SOIC |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Analog Devices |
| Offset Voltage (max) | 200 µV | 200 µV | 200 µV | 200 µV |
| Bandwidth | 2 MHz | 2 MHz | 2 MHz | 500 kHz |
| CMRR | 88 dB | 88 dB | 88 dB | 90 dB |
| Supply Voltage (max) | 36 V | 36 V | 36 V | 36 V |
| Operating Temperature | -40°C to +125°C | -40°C to +125°C | -40°C to +125°C | -40°C to +85°C |
| Automotive Grade | No | No | Yes (AEC-Q100) | No |
Key Differentiators
- e-trim™ technology for precision (vs AD629ARZ)
- Wider bandwidth (vs AD629ARZ)
- Automotive grade option (vs INA597IDGKR)
Design Notes
Place a 0.1 µF bypass capacitor close to the V+ and V- pins to filter high-frequency noise. For single-supply operation, connect V- to ground and use a 10 µF capacitor on the supply line. Keep the input traces short and shielded to minimize noise pickup.
Ensure the input common-mode voltage stays within the specified range to avoid output saturation. The REF pin can be used to level-shift the output; connect it to a low-impedance reference voltage. Do not leave the REF pin floating, as this can cause unpredictable output offset.
The INA597IDGKT dissipates minimal power due to its low quiescent current. However, in high-temperature environments, ensure the junction temperature stays below 150°C. The VSSOP package has a thermal resistance of approximately 200°C/W; for high-power applications, consider adding thermal vias.
Compliance Information
RoHS compliant per TI product page. AEC-Q100 qualification available on INA597AIDGKT variant.
