Texas Instruments OPA207IDGKR

Overview

OPA207IDGKR from Texas Instruments is a precision rail-to-rail output operational amplifier designed for high-accuracy signal conditioning in low-power industrial sensing and data acquisition systems. It delivers 150 μV max input offset voltage, ±1 μV/°C max drift, 1 MHz gain bandwidth, 3.6 V/μs slew rate, and operates from ±2.25 V to ±18 V supplies - enabling high-resolution analog front-ends in battery-powered and wide-supply industrial transmitters.

For engineers reviewing the OPA207IDGKR datasheet, OPA207IDGKR pinout, OPA207IDGKR application, or OPA207IDGKR equivalent, key selection criteria include ultra-low 0.1–10 Hz noise (0.16 μV_PP), rail-to-rail output swing within 15 mV of rails (no load), and guaranteed performance over –40°C to +125°C - critical for pressure/temperature transmitter calibration and analog input module design.

Technical Context

The OPA207IDGKR employs super-beta bipolar input transistors with internal bias current cancellation, achieving 2.8 nA max input bias current across –40°C to +125°C - outperforming CMOS/JFET op amps at elevated temperatures. Its rail-to-rail output stage uses series current-limiting resistors to maintain 130 dB min open-loop gain while swinging within 15 mV of supply rails under no load.

A proprietary slew-boost architecture enables 3.6 V/μs slew rate at only 375 μA max quiescent current per amplifier. The device is unity-gain stable, free from phase reversal, and features EMI rejection ratio (EMIRR IN+) >100 dB below 100 MHz - supporting robust operation in electrically noisy industrial environments.

Key Specifications

Pinout & Package

VSSOP-8 (DGK) package: 3.00 mm × 3.00 mm body, 0.65 mm lead pitch, exposed thermal pad (not electrically connected).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar precision operational amplifier applications.

Compared with OPA207IDGKR, OPA211IDR trades 10× higher power for 4.7× greater bandwidth and marginally lower noise, while AD8628ARZ offers near-zero drift at the cost of non-rail-to-rail output and higher quiescent current - making OPA207IDGKR optimal for balanced low-power, low-drift, rail-to-rail industrial signal chains.

Availability

OPA207IDGKR is available at Aetrix Electronics and suitable for pressure transmitter calibration, temperature transmitter signal conditioning, and analog input module production requiring stable component supply across extended temperature ranges and multi-year product lifecycles.

Supply support for OPA207IDGKR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor company specializing in analog and embedded processing technologies, with leadership in precision op amps, data converters, and power management ICs.

The OPA207IDGKR belongs to TI's precision op amp portfolio targeting industrial process control, test equipment, and sensor signal conditioning - engineered for ultra-low drift, low noise, and rail-to-rail operation in harsh environments.

FAQ

What is the maximum input offset voltage specification for OPA207IDGKR over temperature?

The OPA207IDGKR has a maximum input offset voltage of ±150 μV over the –40°C to +85°C temperature range, and ±200 μV over –40°C to +125°C. This is specified in the Electrical Characteristics table of the SBOS826D datasheet under "Input offset voltage" for the DGK package. These values are production-tested limits, not typicals, ensuring worst-case performance in high-reliability industrial applications where OPA207IDGKR is deployed.

Does OPA207IDGKR require external compensation for unity-gain stability?

No, the OPA207IDGKR is internally compensated for unity-gain stability and requires no external components to operate stably at gain = 1. This is confirmed in Section 7.3.1 of the SBOS826D datasheet, which states "The OPA207 is unity-gain stable and free from unexpected output phase reversal." Designers can use OPA207IDGKR directly in voltage-follower configurations for sensor buffering without risk of oscillation - a key advantage over decompensated precision op amps.

What is the recommended power supply decoupling for OPA207IDGKR?

Texas Instruments recommends placing a 0.1-μF ceramic capacitor between each supply pin (V+ and V–) and ground, located within 5 mm of the OPA207IDGKR package. This is specified in Section 7.3.1 of the SBOS826D datasheet. These capacitors suppress high-frequency noise and prevent instability, especially critical in industrial environments with switching power supplies or motor drives where OPA207IDGKR is commonly used.

Can OPA207IDGKR drive capacitive loads without isolation resistance?

Yes, the OPA207IDGKR can directly drive up to 200 pF capacitive loads without external isolation resistance, as stated in the "Capacitive load drive" specification (200 pF) in Section 6.5 of SBOS826D. For loads >200 pF, a small series resistor (e.g., 25 Ω) is recommended to maintain phase margin - verified in Figure 13 and Figure 14 of the datasheet. This capability simplifies PCB layout in OPA207IDGKR-based filter and ADC driver stages.

How does the input bias current of OPA207IDGKR behave across temperature?

The OPA207IDGKR maintains ≤2.8 nA maximum input bias current from –40°C to +125°C due to its super-beta bipolar input stage with internal cancellation. Unlike CMOS op amps, its bias current does not double per 10°C rise - it remains stable and low across the full range. This is documented in Figure 30 and Section 7.3.6 of SBOS826D, making OPA207IDGKR ideal for high-impedance sensor interfaces where OPA207IDGKR bias current would otherwise dominate error budgets.