Specifications
| Type | Description |
|---|---|
| Part Number | OPA828 |
| Manufacturer | Texas Instruments |
| Product Type | Operational Amplifier |
| Category | Signal Chain |
| Package / Case | 8-pin SOIC (D package); 8-pin HVSSOP PowerPAD (DGN package) |
| Channels | 1; OPA828 single amplifier device |
| Input Voltage Noise Density | 4 nV/√Hz; f = 1 kHz |
| Input Voltage Noise | 60 nV RMS; 0.1 Hz to 10 Hz |
| Input Bias Current | 0.1 pA; DGN package, typical feature value |
| Input Bias Current | 1 pA; D package, typical feature value |
| Input Offset Voltage | 25 µV; DGN package, typical feature value |
| Input Offset Voltage | 50 µV; D package, typical feature value |
| Input Offset Voltage Drift | 0.2 µV/°C; DGN package, typical feature value |
| Input Offset Voltage Drift | 0.45 µV/°C; D package, typical feature value |
| Gain Bandwidth Product | 45 MHz; VO = 10 mVPP, CL = 30 pF |
| Slew Rate | 150 V/µs; VO = 10-V step, G = +1 or G = -1 |
| Settling Time | 120 ns; 14-bit accuracy, VO = 10-V step, CL = 30 pF, G = -1 |
| Supply Voltage Range | ±4 V to ±18 V; recommended operating dual supply |
| Supply Voltage Range | 8 V to 36 V; recommended operating single supply |
| Supply Current | 5.5 mA/channel typical; from device description |
| Operating Ambient Temperature | -40°C to 125°C; recommended operating condition |
| Absolute Maximum Supply Voltage | 40 V single supply; ±20 V dual supply; absolute maximum ratings |
| Common-Mode Input Voltage Range | (V-) + 2.5 V to (V+) - 3.5 V; TA = 25°C |
| Input Offset Voltage | ±50 µV typ, ±300 µV max; D package, TA = 25°C, VS = ±15 V |
| Input Offset Voltage | ±25 µV typ, ±125 µV max; DGN package, TA = 25°C, VS = ±15 V |
| Input Offset Voltage Drift | ±0.45 µV/°C typ, ±1.5 µV/°C max; D package, TA = -40°C to 125°C |
| Input Offset Voltage Drift | ±0.2 µV/°C typ, ±0.8 µV/°C max; DGN package, TA = -40°C to 125°C |
| Power Supply Rejection Ratio | 1.4 µV/V typ, ±5.6 µV/V max; 8 V ≤ VS ≤ 36 V, TA = 25°C |
| Input Bias Current | ±1 pA typ, ±8 pA max; D package, TA = 25°C |
| Input Bias Current | ±0.2 pA typ, ±5 pA max; DGN package, TA = 25°C |
| Input Offset Current | ±1 pA typ, ±8 pA max; D package, TA = 25°C |
| Input Offset Current | ±0.2 pA typ, ±5 pA max; DGN package, TA = 25°C |
| Input Voltage Noise | 0.34 µVPP; f = 0.1 Hz to 10 Hz, peak-to-peak |
| Input Voltage Noise | 0.06 µVRMS; f = 0.1 Hz to 10 Hz, RMS |
| Input Voltage Noise Density | 7.5 nV/√Hz; f = 10 Hz |
| Input Voltage Noise Density | 4.8 nV/√Hz; f = 100 Hz |
| Input Current Noise Density | 1.2 fA/√Hz; f = 1 kHz |
| Common-Mode Rejection Ratio | 108 dB min, 115 dB typ; D package, (V-) + 2.5 V < VCM < (V+) - 3.5 V |
| Common-Mode Rejection Ratio | 103 dB min, 108 dB typ; DGN package, (V-) + 2.5 V < VCM < (V+) - 3.5 V |
| Differential Input Impedance | 10^12 Ω || 6 pF; electrical characteristics |
| Common-Mode Input Impedance | 10^12 Ω || 9 pF; electrical characteristics |
| Open-Loop Voltage Gain | 120 dB min, 130 dB typ; (V-) + 1.6 V < VO < (V+) - 1.6 V, RL = 600 Ω |
| Open-Loop Voltage Gain | 120 dB min, 130 dB typ; (V-) + 1.5 V < VO < (V+) - 1.5 V, RL = 10 kΩ |
| Unity Gain Frequency | 45 MHz; VO = 10 mVPP, CL = 30 pF |
| Phase Margin | 57 degrees; VO = 10 mVPP, CL = 30 pF |
| Overshoot | 8%; VO = 100-mV step, G = +1, CL = 30 pF |
| Overload Recovery Time | 55 ns; G = -10 |
| Total Harmonic Distortion Plus Noise | 0.000028%, -130 dB; VO = 3.5 VRMS, G = +1, f = 1 kHz, RL = 10 kΩ or 600 Ω |
| Second-Order Harmonic Distortion | 119 dBc; f = 100 kHz, VO = 5 VPP, G = +1 |
| Third-Order Harmonic Distortion | 125 dBc; f = 100 kHz, VO = 5 VPP, G = +1 |
| ESD Rating HBM | ±2000 V; human body model, per ANSI/ESDA/JEDEC JS-001, all pins |
| ESD Rating CDM | ±500 V; charged device model, per JEDEC JESD22-C101, all pins |
| Junction-to-Ambient Thermal Resistance | 121.5°C/W; OPA828 D package, SOIC-8 |
| Junction-to-Ambient Thermal Resistance | 56.7°C/W; OPA828 DGN package, HVSSOP-8 |
| Datasheet Status | request_only |
Product Overview
The OPA828 is a Texas Instruments single JFET-input operational amplifier for Signal_Chain designs. It combines one amplifier channel with low input voltage noise, including 4 nV/√Hz at 1 kHz and 60 nV RMS over 0.1 Hz to 10 Hz. Electrical-characteristic noise entries also list 0.34 µVPP and 0.06 µVRMS from 0.1 Hz to 10 Hz, 7.5 nV/√Hz at 10 Hz, 4.8 nV/√Hz at 100 Hz, and 1.2 fA/√Hz input current noise density at 1 kHz.
The device operates from recommended dual supplies of ±4 V to ±18 V or a single supply of 8 V to 36 V, with an absolute maximum supply rating of 40 V single supply or ±20 V dual supply. It has a recommended operating ambient temperature range of -40°C to 125°C and typical supply current of 5.5 mA per channel.
Package options are 8-pin SOIC (D package) and 8-pin HVSSOP PowerPAD (DGN package). Package-specific precision values include typical input offset voltage of 50 µV for D and 25 µV for DGN, with drift of 0.45 µV/°C for D and 0.2 µV/°C for DGN. The device is suited to precision signal-chain amplifier stages, low-bias input circuits, wide-supply analog front ends, and fast-settling signal paths.
Key Features
- Single-channel JFET-input operational amplifier
- 4 nV/√Hz input voltage noise density at 1 kHz
- 60 nV RMS noise from 0.1 Hz to 10 Hz
- 45 MHz gain bandwidth product with 30 pF load
- 150 V/µs slew rate for 10-V step response
- 120 ns settling time to 14-bit accuracy
- ±4 V to ±18 V recommended dual-supply operation
- 8 V to 36 V recommended single-supply operation
- 0.1 pA typical input bias current in DGN package
- 25 µV typical input offset voltage in DGN package
- 0.000028% THD+N at 1 kHz, 3.5 VRMS
- -40°C to 125°C recommended ambient operation
Typical Applications
- Precision signal-chain amplifier stages
- Low-bias input analog circuits
- Fast-settling 14-bit signal paths
- Wide-supply analog front ends
- Low-noise measurement circuits
- High-impedance input buffering
- Unity-gain and inverting amplifier stages
Procurement Notes
When requesting a quote for OPA828, buyers should confirm the manufacturer, package or case, required quantity, target date code, compliance documents, packing method, destination country and expected delivery schedule.
If alternatives are acceptable, buyers should share the approved vendor list, required electrical or optical limits, package constraints and qualification requirements. Any alternative part should be reviewed by the buyer's engineering team before production use.
For analog and signal-chain sourcing, supply voltage, bandwidth, accuracy, noise level, package, temperature grade, input/output configuration and qualification requirements should be verified before approval.
FAQ
What type of amplifier is the OPA828?
The OPA828 is a Texas Instruments single-channel JFET-input operational amplifier in the Signal_Chain category. It is offered in 8-pin SOIC (D package) and 8-pin HVSSOP PowerPAD (DGN package) package options.
What supply ranges are recommended for OPA828 operation?
The recommended operating supply range is ±4 V to ±18 V for dual-supply operation or 8 V to 36 V for single-supply operation. The absolute maximum supply rating is 40 V single supply or ±20 V dual supply.
How do D and DGN packages differ in offset specifications?
For typical feature values, the D package lists 50 µV input offset voltage and 0.45 µV/°C drift, while the DGN package lists 25 µV input offset voltage and 0.2 µV/°C drift.
What noise specifications are listed for the OPA828?
The extracted datasheet facts list 4 nV/√Hz input voltage noise density at 1 kHz and 60 nV RMS from 0.1 Hz to 10 Hz. Electrical characteristics also include 7.5 nV/√Hz at 10 Hz and 4.8 nV/√Hz at 100 Hz.
Technical Review & Sourcing Note
Prepared by LDeepAI Component Sourcing Team. Reviewed for RFQ, documentation and alternative sourcing use. Last updated: June 30, 2026.
This page is based on manufacturer datasheet information and LDeepAI sourcing review. Specifications should be verified against the official manufacturer datasheet before final procurement or design approval. Final electrical, optical and reliability approval should be confirmed by the buyer's engineering team.