OPAx140 High-Precision, Low-Noise, Rail-to-Rail Output, 11-MHz, JFET Op Amps
1 Features
- Very-low offset drift: 1 μV/°C maximum
- Very-low offset: 120 μV
- Low input bias current: 10 pA maximum
- Very-low 1/f noise: 250 nVPP, 0.1 Hz to 10 Hz
- Low noise: 5.1 nV/√Hz
- Slew rate: 20 V/μs
- Low supply current: 2 mA maximum
- Input voltage range includes V– supply
- Single-supply operation: 4.5 V to 36 V
- Dual-supply operation: ±2.25 V to ±18 V
- No phase reversal
- Packages:
- Industry-standard SOIC, SON, SOT-23, TSSOP, and VSSOP
3 Description
The OPA140, OPA2140, and OPA4140 (OPAx140) operational amplifier (op amp) family is a series of low-power JFET input amplifiers that features good drift and low input bias current. The rail-to-rail output swing and input range that includes V– allow designers to take advantage of the low-noise characteristics of JFET amplifiers while also interfacing to modern, single-supply, precision analog-to-digital converters (ADCs) and digital-to-analog converters (DACs).
The OPA140 achieves 11-MHz unity-gain bandwidth and 20-V/μs slew rate while consuming only 1.8 mA (typical) of quiescent current. This device runs on a single 4.5-V to 36-V supply or dual ±2.25-V to ±18-V supplies.
All versions are fully specified from –40°C to +125°C for use in the most challenging environments. The OPA140 (single) is available in the 5‑pin SOT-23 8‑pin VSSOP and 8‑pin SOIC packages. The OPA2140 (dual) is available in 8‑pin SON, 8‑pin VSSOP, and 8‑pin SOIC packages. The OPA4140 (quad) is available in the 14‑pin SOIC and 14‑pin TSSOP packages.
| PART NUMBER | CHANNELS | PACKAGE(1) |
|---|---|---|
| OPA140 | Single | D (SOIC, 8) |
| DBV (SOT23, 5) | ||
| DGK (VSSOP, 8) | ||
| OPA2140 | Dual | D (SOIC, 8) |
| DRG (SON, 8) | ||
| DGK (VSSOP, 8) | ||
| OPA4140 | Quad | D (SOIC, 14) |
| PW (TSSOP, 14) |
4 Revision History
Changes from Revision E (July 2021) to Revision F (March 2023)
- Changed OPA2140 DRG package from preview to production dataGo
- Added ± to input offset voltage and input offset voltage drift values in the Electrical Characteristics Go
- Changed 12-bit settling time specification unit from ns to µs in the Electrical Characteristics Go
- Deleted incorrect power supply voltage parameter from the Electrical Characteristics and moved corrected values to the Recommended Operating Conditions Go
- Added thermal-related information to the OPA2140 DRG package in the Thermal Protection sectionGo
- Changed Figure 7-3 and Figure 7-4 for clarityGo
- Changed Figure 8-3, Dual Operational Amplifier Board Layout for Noninverting Configuration to show the dual DRG package optionGo
Changes from Revision D (January 2019) to Revision E (July 2021)
- Added OPA2140 DRG preview package and associated content to data sheetGo
Changes from Revision C (August 2016) to Revision D (January 2019)
- Changed Figure 12 x-axis title From: Frequency (Hz) To: Output Amplitude (VRMS)Go
Changes from Revision B (November 2015) to Revision C (August 2016)
- Changed units for En Input voltage noise From: μV To: nV in Electrical Characteristics: VS = 4.5 V to 36 V; ±2.25 V to ±18 VGo
Changes from Revision A (August 2010) to Revision B (November 2015)
- Added ESD Ratings table, Feature Description section, Device Functional Modes, Application and Implementation section, Power Supply Recommendations section, Layout section, Device and Documentation Support section, and Mechanical, Packaging, and Orderable Information section Go
- Changed title of Table 6-1 From: Characteristic Performance Measurements To: Table of Graphs Go
- Changed section 7.37 title From: Power Dissipation and Thermal Protection To: Thermal Protection Go
