OPA2206ADGKR - ±40V OVP Dual Precision Op Amp | Texas Instruments
部品番号: OPA2206ADGKR ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $3.42 | $3.42 |
| 10 | $3.07 | $30.70 |
| 100 | $2.74 | $274.00 |
| 500 | $2.46 | $1,230.00 |
| 1,000 | $2.18 | $2,180.00 |
| 2,500 | $1.92 | $4,800.00 |
OPA2206ADGKR 概要
An operational amplifier (op amp) is a DC-coupled high-gain electronic voltage amplifier with differential inputs and, typically, a single-ended output. Precision op amps form a distinct sub-category characterized by very low offset voltage, low offset drift, low bias current, and low noise, sitting hierarchically under amplifier ICs (integrated circuits) and analog signal-chain components. The OPA2206 is the dual-channel member of TI's OPAx206 family and represents the next-generation evolution of the long-standing OPAx277 series, retaining the OPAx277's low-noise, low-drift e-trim™ precision architecture while adding integrated ±40 V input OVP, eliminating the need for external input clamping in many industrial designs.
Key features include 4 µV (typ) / 25 µV (max) offset voltage achieved via TI's proprietary e-trim™ trimming technology, ±0.08 µV/°C (typ) offset drift, ±5 pA (typ) input bias current enabled by super-beta input transistors, integrated ±40 V input OVP that survives ESD and transients beyond the rails, and a wide supply range of 4.5 V to 36 V (single supply) or ±2.25 V to ±18 V (dual supply). The device is specified over the −40 °C to +125 °C industrial temperature range.
Architecturally, the OPA2206 uses a bipolar e-trim™ process with super-beta input stages, which decouple bias current from base current, dramatically reducing input bias current while preserving the low-noise and low-drift characteristics of a precision bipolar op amp. The e-trim™ trim step digitally calibrates each die's offset to <25 µV at room temperature and minimizes drift across temperature.
Typical applications include industrial process-control analog input modules, precision sensor signal conditioning (load cells, strain gauges, thermocouple front-ends), test and measurement equipment, battery monitoring systems, and any high-voltage-tolerant precision front-end where input transients or wiring faults could otherwise destroy a conventional op amp. The wide supply and ±40 V OVP make it a strong fit for 24-V industrial-bus sensor interfaces.
When designing with this device, place the input series resistors as close to the OPA2206 inputs as possible to maximize the effectiveness of the integrated OVP clamp structure and to limit fault current through the ESD diodes. The OPA2206 does not include rail-to-rail output; output swing is typically within ~1 V of each rail at 10 kΩ load.
This page synthesizes distributor pricing, drop-in alternatives in the VSSOP-8 footprint, and practical design notes that are not found in the manufacturer datasheet alone.
ドロップイン代替品: OPA2206ADGKR — 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。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: OPA2206ADGKR （同一形状・フットプリント） — 相違点: MSL Level, Operating Temperature Range, Package.
クイック比較ツール — 並列比較する代替部品を選択:
OPA2206ADGKT
✅ ドロップイン📋 参考代替品（カタログ未掲載）
OPA2206AIDGKR
✅ ドロップイン📋 参考代替品（カタログ未掲載）
OPA2192IDGKR
✅ ドロップイン✓ 在庫あり
$1.78 / 個
データシートを見る →OPA2197IDGKR
✅ ドロップイン📋 参考代替品（カタログ未掲載）
OPA2206ADGKR 最大定格＆電気的特性
| Product Type | Precision Operational Amplifier |
| Number of Channels | 2 (Dual) |
| Input Overvoltage Protection | ±40 V beyond supplies |
| Input Offset Voltage (typical) | ±4 µV |
| Input Offset Voltage (maximum) | ±25 µV |
| Input Offset Voltage Drift (typical) | ±0.08 µV/°C |
| Input Bias Current (typical) | ±5 pA (super-beta inputs) |
| Supply Voltage Range (Single) | 4.5 V to 36 V |
| Supply Voltage Range (Dual) | ±2.25 V to ±18 V |
| 動作温度範囲 | -40 °C to +125 °C |
| パッケージ | VSSOP-8 (DGK) 3.0 x 3.0 mm |
| ピン数 | 8 |
| 実装タイプ | Surface Mount |
| MSLレベル | 2 (260 °C, 1 year floor life) |
| RoHS ステータス | Compliant |
| Architecture | Bipolar e-trim™ with super-beta inputs |
OPA2206ADGKR ピン構成
| ピン 1 | OUT A — Output of channel A |
| ピン 2 | -IN A — Inverting input of channel A |
| ピン 3 | +IN A — Non-inverting input of channel A |
| ピン 4 | V- — Negative supply (or GND for single supply) |
| ピン 5 | +IN B — Non-inverting input of channel B |
| ピン 6 | -IN B — Inverting input of channel B |
| ピン 7 | OUT B — Output of channel B |
| ピン 8 | V+ — Positive supply |
主な用途
OPA2206ADGKR の用途: 7 件s: Industrial 24-V Sensor Input Module, Precision Load Cell Signal Conditioning, Thermocouple and RTD Front-End, Battery Management Current Sensing, Test and Measurement Instrumentation, Medical Patient Monitoring Signal Chain, Photodiode Transimpedance Amplifier.
Industrial 24-V Sensor Input Module
The OPA2206ADGKR is purpose-built for 24-V industrial analog input modules where field wiring may carry transients or fault voltages far above the local 5-V or 3.3-V supply rails. The integrated ±40 V input OVP clamp structure allows direct connection to a 4-20 mA current-loop sense resistor, a thermocouple, or a strain-gauge bridge without external TVS or series protection diodes, reducing BOM and leakage paths. With ±4 µV typical offset and ±0.08 µV/°C drift, it preserves the small-signal accuracy required for 16-bit to 18-bit ADC front-ends operating from a single +5 V supply.
おすすめ
Precision Load Cell Signal Conditioning
In load-cell and weigh-scale designs, the OPA2206ADGKR's ±5 pA typical input bias current and super-beta input stage avoid generating bias-current-induced offset errors that would otherwise corrupt the microvolt-level bridge output. Its 4 µV offset and 0.08 µV/°C drift maintain calibration accuracy across the industrial -40 °C to +125 °C range without periodic recalibration. The integrated ±40 V OVP protects the bridge-amplifier front end against electrostatic discharge during installation, an important reliability consideration for field-deployed scales.
おすすめ
Thermocouple and RTD Front-End
Thermocouple and RTD conditioning demands an amplifier with very low offset, low drift, and low bias current to resolve microvolt-level signals over wide temperature excursions. The OPA2206ADGKR delivers ±4 µV typical offset, ±0.08 µV/°C drift, and ±5 pA bias current, providing enough headroom for type K, J, or T thermocouples without chopper-stabilization artifacts. Its ±40 V OVP is also valuable in process plants where common-mode faults and ground loops can drive inputs well beyond the supply rails.
おすすめ
Battery Management Current Sensing
Battery-pack current-sense amplifiers must tolerate common-mode voltages that swing from ground to the full pack voltage during charge and discharge cycles, and survive load-dump transients on automotive 12-V or 24-V rails. The OPA2206ADGKR operates from 4.5 V to 36 V single supply and integrates ±40 V OVP at the inputs, enabling direct connection to a high-side current-sense shunt without external protection. Its e-trim™ precision keeps coulomb-counting accurate over the full state-of-charge range, critical for battery-fuel-gauge accuracy.
おすすめ
Test and Measurement Instrumentation
Bench DMMs, data loggers, and laboratory instruments need precision front-end amplifiers that combine low noise, low drift, and tolerance to operator-induced overvoltages on the input terminals. The OPA2206ADGKR's 4 µV offset, ±0.08 µV/°C drift, and ±40 V OVP suit DMM input-protection networks and scanner-channel buffers. Its dual-channel configuration allows a single IC to handle differential and ground-reference paths in a three-terminal measurement front end.
おすすめ
Medical Patient Monitoring Signal Chain
Patient monitors (ECG, EMG, SpO2) demand amplifiers with microvolt-level resolution, very low input bias current to avoid DC-offset artifacts on high-impedance electrodes, and tolerance to defibrillator pulses that can drive inputs to hundreds of volts briefly. The OPA2206ADGKR's ±5 pA super-beta bias current and ±40 V OVP provide the foundation for ECG front-end protection networks, while its low drift keeps baseline wander minimal across the patient's body temperature range.
おすすめ
Photodiode Transimpedance Amplifier
Precision photodiode TIAs benefit from the OPA2206ADGKR's super-beta ±5 pA input bias current, which minimizes the DC error contribution from bias current flowing through the high-value feedback resistor. The low 4 µV offset and ±0.08 µV/°C drift maintain accurate dark-current subtraction over temperature, important for chemiluminescence, spectroscopy, and LIDAR receiver front-ends. The dual-channel package enables a differential photodiode receiver in a single IC footprint.
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: OPA2206ADGKR — 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 | OPA2206ADGKT | OPA2206AIDGKR | OPA2192IDGKR | OPA2197IDGKR | OPA2277UA/2K5 |
|---|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | VSSOP-8 (DGK) | VSSOP-8 (DGK) - same | VSSOP-8 (DGK) - same | VSSOP-8 (DGK) - same | VSSOP-8 (DGK) - same | SOIC-8 (D) - different |
| Channels | 2 (Dual) | 2 (Dual) | 2 (Dual) | 2 (Dual) | 2 (Dual) | 2 (Dual) |
| Input Offset Voltage (typ) | ±4 µV | ±4 µV | ±4 µV | ±10 µV | ±25 µV | ±10 µV |
| Input OVP | ±40 V integrated | ±40 V integrated | ±40 V integrated | None (external required) | None (external required) | None (external required) |
| Input Bias Current (typ) | ±5 pA (super-beta) | ±5 pA | ±5 pA | ±5 pA | ±5 pA | ±1 nA |
| Supply Voltage Range | 4.5 V to 36 V | 4.5 V to 36 V | 4.5 V to 36 V | 4.5 V to 36 V | 4.5 V to 36 V | 5 V to 36 V |
主な差別化要因
- Integrated ±40 V input overvoltage protection eliminates external clamping BOM （vs OPA2277UA/2K5)
- Super-beta input stage reduces bias current ~10× versus OPAx277 family （vs OPA2277UA/2K5)
- Lower input offset voltage (typ) versus OPAx192 alternatives （vs OPA2192IDGKR)
設計ノート
Place input series resistors as close to the OPA2206 inputs (pins 2, 3, 5, 6) as physically possible to maximize the effectiveness of the integrated ±40 V OVP clamp structure. During a transient event, the input series resistance drops the bulk of the fault voltage; keeping the trace between the resistor and the IC input short minimizes parasitic inductance that would otherwise allow the input pin to overshoot the clamp voltage.
The OPA2206 output is NOT rail-to-rail; output swing is typically within ~1 V of each rail at 10 kΩ load. Do not assume rail-to-rail output swing when designing single-supply ADC driver circuits that require the output to reach the positive rail. For rail-to-rail output, consider OPA2333 or OPA2344 instead, noting they lack the integrated ±40 V OVP.
Use a guard trace or guard ring around each input pin to minimize leakage currents that would otherwise corrupt the precision offset and bias specifications of the OPA2206. Guard traces must be driven to the same potential as the input pin (typically the reference or common-mode voltage) and isolated from high-impedance input traces on both sides.
Estimated: at ±18 V dual supply and 1 mA quiescent current per channel, total supply current is ~2 mA. For battery-powered precision applications, consider the OPA2333 (1.65 V to 5.5 V supply) or OPA2330 (zero-drift CMOS) for sub-µA quiescent current, accepting that neither has the ±40 V OVP.
コンプライアンス情報
RoHS and REACH compliant per TI product page. Standard catalog part is NOT AEC-Q100 qualified; for automotive-grade precision op amp, see OPA2206-Q1 or OPA4277-Q1 families. MSL Level 2 with 1-year floor life at 260 °C peak reflow.
