Specifications
| Type | Description |
|---|---|
| Part Number | OPA858 |
| Manufacturer | Texas Instruments |
| Product Type | Operational Amplifier |
| Category | Signal Chain |
| Package Case | DSG WSON-8, 2.00 mm x 2.00 mm; bare die 0.751 mm x 0.705 mm |
| Gain Bandwidth Product | 5.5 GHz; V_S+ = 5 V, V_S- = 0 V, G = 7 V/V, R_F = 453 ohm, R_L = 200 ohm, T_A = 25°C |
| Minimum Stable Gain | 7 V/V; decompensated amplifier; device comparison table |
| Input Type | CMOS; device comparison table |
| Input Voltage Noise | 2.5 nV/sqrt(Hz); f = 1 MHz |
| Input Capacitance | 0.8 pF; device comparison table |
| Common-Mode Input Capacitance | 0.62 pF; electrical characteristics |
| Differential Input Capacitance | 0.2 pF; electrical characteristics |
| Small-Signal Bandwidth | 1.2 GHz typ; V_OUT = 100 mVpp |
| Large-Signal Bandwidth | 600 MHz typ; V_OUT = 2 Vpp |
| Bandwidth for 0.1-dB Flatness | 130 MHz typ; V_S+ = 5 V, V_S- = 0 V, G = 7 V/V, T_A = 25°C |
| Slew Rate | 2000 V/us typ; 10%-90%, V_OUT = 2 V step |
| Rise Time | 0.3 ns typ; V_OUT = 100 mV step |
| Fall Time | 0.3 ns typ; V_OUT = 100 mV step |
| Settling Time to 0.1% | 8 ns typ; V_OUT = 2 V step |
| Settling Time to 0.001% | 3000 ns typ; V_OUT = 2 V step |
| Overshoot or Undershoot | 7% typ; V_OUT = 2 V step |
| Overdrive Recovery | 200 ns typ; 2x output overdrive, 0.1% recovery |
| Second-Order Harmonic Distortion at 10 MHz | 88 dBc typ; f = 10 MHz, V_OUT = 2 Vpp |
| Second-Order Harmonic Distortion at 100 MHz | 64 dBc typ; f = 100 MHz, V_OUT = 2 Vpp |
| Third-Order Harmonic Distortion at 10 MHz | 86 dBc typ; f = 10 MHz, V_OUT = 2 Vpp |
| Third-Order Harmonic Distortion at 100 MHz | 68 dBc typ; f = 100 MHz, V_OUT = 2 Vpp |
| Closed-Loop Output Impedance | 0.15 ohm typ; f = 1 MHz |
| Open-Loop Voltage Gain | 72 dB min, 75 dB typ; V_S+ = 5 V, V_S- = 0 V, G = 7 V/V, T_A = 25°C |
| Input Offset Voltage | -5 mV min, ±0.8 mV typ, 5 mV max; T_A = 25°C |
| Input Offset Voltage Drift | ±12 uV/°C typ; T_A = -40°C to +125°C |
| Input Bias Current | ±0.4 pA typ, 5 pA max; T_A = 25°C |
| Input Offset Current | ±0.01 pA typ, 5 pA max; T_A = 25°C |
| Common-Mode Rejection Ratio | 70 dB min, 90 dB typ; V_CM = ±0.5 V referenced to midsupply |
| Common-Mode Input Resistance | 1 Gohm typ; electrical characteristics |
| Differential Input Resistance | 1 Gohm typ; electrical characteristics |
| Common-Mode Input Voltage High at 3.3 V | 1.7 V min, 1.9 V typ; CMRR > 66 dB, V_S+ = 3.3 V |
| Common-Mode Input Voltage Low at 3.3 V | 0 V min, 0.4 V typ; CMRR > 66 dB, V_S+ = 3.3 V |
| Common-Mode Input Voltage High | 3.4 V min, 3.6 V typ; CMRR > 66 dB |
| Common-Mode Input Voltage High Over Temperature | 3.4 V min; T_A = -40°C to +125°C, CMRR > 66 dB |
| Common-Mode Input Voltage Low | 0 V min, 0.4 V typ; CMRR > 66 dB |
| Common-Mode Input Voltage Low Over Temperature | 0.35 V typ; T_A = -40°C to +125°C, CMRR > 66 dB |
| Output Voltage High at 3.3 V | 2.3 V min, 2.4 V typ; T_A = 25°C, V_S+ = 3.3 V |
| Output Voltage High | 3.95 V min, 4.1 V typ; T_A = 25°C |
| Output Voltage High Over Temperature | 3.9 V min; T_A = -40°C to +125°C |
| Output Voltage Low at 3.3 V | 1.05 V min, 1.15 V typ; T_A = 25°C, V_S+ = 3.3 V |
| Output Voltage Low | 1.05 V min, 1.15 V typ; T_A = 25°C |
| Output Voltage Low Over Temperature | 1.2 V max; T_A = -40°C to +125°C |
| Linear Output Drive | 65 mA min, 80 mA typ; sink and source, R_L = 10 ohm, A_OL > 60 dB |
| Linear Output Drive Over Temperature | 64 mA min; sink and source, T_A = -40°C to +125°C, R_L = 10 ohm, A_OL > 60 dB |
| Output Short-Circuit Current | 85 mA min, 105 mA typ; electrical characteristics |
| Quiescent Current at 5 V | 18 mA min, 20.5 mA typ, 24 mA max; V_S+ = 5 V |
| Quiescent Current at 3.3 V | 17.5 mA min, 20 mA typ, 23.5 mA max; V_S+ = 3.3 V |
| Quiescent Current at 5.25 V | 18 mA min, 21 mA typ, 24 mA max; V_S+ = 5.25 V |
| Quiescent Current at 125°C | 24.5 mA max; T_A = 125°C |
| Quiescent Current at -40°C | 18.5 mA max; T_A = -40°C |
| Positive Power-Supply Rejection Ratio | 74 dB min, 84 dB typ; electrical characteristics |
| Negative Power-Supply Rejection Ratio | 70 dB min, 80 dB typ; electrical characteristics |
| Disable Voltage Threshold | 0.65 V min, 1 V max; amplifier off when PD is less than this voltage |
| Enable Voltage Threshold | 1.5 V min, 1.8 V max; amplifier on when PD is greater than this voltage |
| Power-Down Quiescent Current | 70 uA typ, 140 uA max; power-down mode |
| PD Bias Current | 70 uA typ, 200 uA max; power-down pin |
| Turn-On Time Delay | 13 ns typ; time to V_OUT = 90% of final value |
| Turn-Off Time Delay | 120 ns typ; power-down control |
| Recommended Total Supply Voltage | 3.3 V min, 5 V nom, 5.25 V max; V_S = V_S+ - V_S- |
| Recommended Operating Free-Air Temperature | -40°C min, 125°C max; recommended operating conditions |
| Absolute Maximum Total Supply Voltage | 5.5 V max; V_S = V_S+ - V_S- |
| Absolute Maximum Input Voltage | V_S- - 0.5 V min, V_S+ + 0.5 V max; IN+ and IN- pins |
| Absolute Maximum Differential Input Voltage | 1 V max; differential input |
| Absolute Maximum Output Voltage | V_S- - 0.5 V min, V_S+ + 0.5 V max; OUT pin |
| Continuous Input Current | ±10 mA max; absolute maximum rating |
| Continuous Output Current | ±100 mA max; long-term continuous output current for electromigration limits |
| Junction Temperature | 150°C max; absolute maximum rating |
| Storage Temperature | -65°C min, 150°C max; absolute maximum rating |
| ESD Rating HBM | ±1000 V; human-body model per ANSI/ESDA/JEDEC JS-001 |
| ESD Rating CDM | ±1500 V; charged-device model per JEDEC JESD22-C101 |
| Junction-to-Ambient Thermal Resistance | 80.1°C/W; DSG WSON-8 package |
| Junction-to-Case Top Thermal Resistance | 100°C/W; DSG WSON-8 package |
| Junction-to-Board Thermal Resistance | 45°C/W; DSG WSON-8 package |
| Junction-to-Top Characterization Parameter | 6.8°C/W; DSG WSON-8 package |
| Junction-to-Board Characterization Parameter | 45.2°C/W; DSG WSON-8 package |
| Junction-to-Case Bottom Thermal Resistance | 22.7°C/W; DSG WSON-8 package |
| Power-Down Logic Function | PD logic low = power off; PD logic high = normal operation; pin function description |
| Bare Die Thickness | 381 um; bare die information |
| Bare Die Backside Potential | VS-; wafer backside electrically connected to VS- |
| Bare Die Bond Pad Metallization | AlCu; bare die information |
| Datasheet Status | request_only |
Product Overview
OPA858 is a Texas Instruments Signal_Chain FET input operational amplifier with a CMOS input type. The device is characterized as a decompensated amplifier with a 7 V/V minimum stable gain and a 5.5 GHz gain bandwidth product under 5 V single-supply test conditions. Key dynamic values include 1.2 GHz typical small-signal bandwidth at 100 mVpp, 600 MHz typical large-signal bandwidth at 2 Vpp, 130 MHz typical 0.1-dB flatness bandwidth, and 2000 V/us typical slew rate for a 2 V output step.
Input-related specifications include 2.5 nV/sqrt(Hz) input voltage noise at 1 MHz, 0.8 pF input capacitance, 0.62 pF common-mode input capacitance, and 0.2 pF differential input capacitance. DC parameters include ±0.4 pA typical input bias current at 25°C, ±0.01 pA typical input offset current at 25°C, and 70 dB minimum common-mode rejection ratio for the stated common-mode test range.
The device is available in a DSG WSON-8 2.00 mm x 2.00 mm package and as a 0.751 mm x 0.705 mm bare die. Bare-die data lists 381 um thickness, AlCu bond pad metallization, and a wafer backside electrically connected to VS-. Applications should align with the documented wide bandwidth, low input capacitance, power-down control, and linear output drive characteristics.
Key Features
- 5.5 GHz gain bandwidth product at 7 V/V gain
- CMOS FET input operational amplifier architecture
- 2.5 nV/sqrt(Hz) input voltage noise at 1 MHz
- 0.8 pF input capacitance from device comparison table
- 1.2 GHz typical small-signal bandwidth at 100 mVpp
- 600 MHz typical large-signal bandwidth at 2 Vpp
- 2000 V/us typical slew rate for 2 V step
- 65 mA minimum linear output drive, sink and source
- Power-down pin supports logic-controlled amplifier off state
- DSG WSON-8 package plus documented bare-die option
Typical Applications
- Wideband signal-chain amplification
- Low-capacitance input buffer stages
- Fast transient signal conditioning
- Power-down controlled amplifier circuits
- Compact DSG WSON-8 assemblies
- Bare-die signal-chain assemblies
- High-output-drive analog stages
Procurement Notes
When requesting a quote for OPA858, 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 OPA858?
OPA858 is a Texas Instruments FET input operational amplifier in the Signal_Chain category. The extracted datasheet facts identify a CMOS input type and a decompensated amplifier behavior with 7 V/V minimum stable gain.
What bandwidth values are specified for OPA858?
The extracted facts list 5.5 GHz gain bandwidth product, 1.2 GHz typical small-signal bandwidth at 100 mVpp, 600 MHz typical large-signal bandwidth at 2 Vpp, and 130 MHz typical bandwidth for 0.1-dB flatness.
What package and bare-die options are documented?
The package case is DSG WSON-8, 2.00 mm x 2.00 mm. The facts also list a 0.751 mm x 0.705 mm bare die, 381 um bare-die thickness, AlCu bond pad metallization, and backside potential connected to VS-.
What supply and temperature range should be used?
Recommended total supply voltage is 3.3 V minimum, 5 V nominal, and 5.25 V maximum. Recommended operating free-air temperature is -40°C to 125°C, with an absolute maximum junction temperature of 150°C.
Technical Review & Sourcing Note
Prepared by LDeepAI Component Sourcing Team. Reviewed for RFQ, documentation and alternative sourcing use. Last updated: July 13, 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.