INA597IDGKT - Precision 2MHz Difference Amplifier | TI
部品番号: INA597IDGKT ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 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 |
INA597IDGKT 概要
A difference amplifier is a type of operational amplifier circuit that amplifies the voltage difference between two inputs while rejecting common-mode voltages. It is a fundamental building block in analog signal processing, often used in current sensing, bridge amplification, and precision measurement systems. The INA597 belongs to the broader category of instrumentation amplifiers, which are specialized for accurate differential signal acquisition in noisy environments.
Key features of the INA597IDGKT include its low offset voltage and drift, which ensure accurate measurement over temperature, and its high CMRR of 88 dB, which rejects common-mode noise. The device also offers rail-to-rail output, allowing maximum dynamic range in single-supply applications. Its low power consumption makes it ideal for battery-powered and portable instrumentation.
The INA597 uses TI's e-trim™ technology, which provides precision trimming of the internal resistor network to achieve excellent gain accuracy and temperature stability. The integrated resistors are laser-trimmed to maintain tight matching, ensuring consistent performance across the operating temperature range. The device is fully specified for operation from -40°C to +125°C, making it suitable for industrial and automotive environments.
Typical applications include motor current sensing, battery management systems, and precision data acquisition. In motor control, the INA597IDGKT can measure the voltage across a shunt resistor to monitor current, providing feedback for closed-loop control. In battery management, it can sense charge/discharge currents with high accuracy. The device's wide supply range and rail-to-rail output also make it suitable for industrial process control and test equipment.
When designing with the INA597IDGKT, ensure that the input common-mode voltage remains within the specified range to maintain linearity. The reference pin (REF) allows level shifting of the output, which is useful in single-supply applications where the output must be centered at a specific voltage. Proper PCB layout with short traces and adequate bypassing will optimize performance.
ドロップイン代替品: INA597IDGKT — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
クイック比較ツール — 並列比較する代替部品を選択:
INA597IDGKR
✅ ドロップイン📋 参考代替品（カタログ未掲載）
INA597AIDGKT
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
INA597AIDGKR
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
INA597IDGKT 最大定格＆電気的特性
| Amplifier Type | Difference Amplifier |
| Number of Circuits | 1 |
| 出力タイプ | Rail-to-Rail |
| Gain Bandwidth Product | 2 MHz |
| Voltage - Input Offset | 200 µV (max) |
| Voltage - Supply Span (Min) | 4.5 V |
| Voltage - Supply Span (Max) | 36 V |
| 動作温度 | -40°C to +125°C |
| パッケージ / ケース | 8-VSSOP (DGK) |
| 実装タイプ | Surface Mount |
| CMRR | 88 dB |
| Offset Drift | 5 µV/°C |
| RoHS ステータス | Compliant |
INA597IDGKT ピン構成
| ピン 1 | OUT — Output |
| ピン 2 | GND — Ground |
| ピン 3 | IN- — Inverting input |
| ピン 4 | IN+ — Non-inverting input |
| ピン 5 | REF — Reference voltage input |
| ピン 6 | V- — Negative supply (or ground in single-supply) |
| ピン 7 | V+ — Positive supply |
| ピン 8 | NC — No connect |
主な用途
INA597IDGKT の用途: 6 件s: 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.
おすすめ
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.
おすすめ
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.
おすすめ
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.
おすすめ
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.
おすすめ
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).
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: INA597IDGKT — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | 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 |
主な差別化要因
- e-trim™ technology for precision （vs AD629ARZ)
- Wider bandwidth （vs AD629ARZ)
- Automotive grade option （vs INA597IDGKR)
設計ノート
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.
コンプライアンス情報
RoHS compliant per TI product page. AEC-Q100 qualification available on INA597AIDGKT variant.
