BETATotal supply span5–36 V · recommended
Dual FET-input audio operational amplifier
OPA2134 Specifications
Review OPA2134 electrical specifications, operating conditions and package details.
Package view
Key specifications
Independent feedback paths let one channel amplify while the other buffers. Keep the signal within the input common-mode range and output swing.
Gain bandwidth8 MHz typical
Input voltage noise8 nV/√Hz at 1 kHz · typical
Ambient range−40 to +85 °C
Package details
OPA2134PA · PDIP-8
| Property | Details |
|---|---|
| Manufacturer | Texas Instruments |
| Part number | OPA2134PA |
| Package | PDIP-8 |
| Connections | 8 pins |
| Mounting | Through-hole |
| Lead pitch | 2.54 mm |
| Package code | PDIP-8 |
| Thermal reference | See operating and package limits |
Operating conditions
TI OPA2134 · Rev B
Manufacturer specifications 6 parameters
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| Parameter | Value | Conditions / notes |
|---|---|---|
| Recommended split supplies | ±2.5 to ±18 V | ±15 V nominal test condition |
| Recommended single supply | 5–36 V | Signal reference must provide appropriate headroom |
| Recommended temperature | −40 to +85°C | Do not substitute the absolute-rating range |
| Input common-mode interval | V− + 2.5 V to V+ − 3.5 V | At ±15 V: −12.5 V to +11.5 V |
| Example supply | +15 V / 0 V / −15 V | 0 V is the shared signal midpoint |
| Absolute supply ceiling | 36 V total | Allow for supply tolerance and transients |
No specifications match. Try a parameter name or a unit.
The signal inputs cannot be assumed to work at either rail.
DC and input characteristics
±15 V, 25°C, unless stated
Manufacturer specifications 8 parameters
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| Parameter | Value | Conditions / notes |
|---|---|---|
| Input offset voltage | ±1 mV typical; ±3.5 mV maximum | Revision B electrical table |
| Offset drift | ±2 µV/°C typical | −40 to +85°C |
| Input bias current | ±5 pA typical; ±100 pA maximum | High-speed test at junction temperature 25°C |
| Input bias over temperature | ±5 nA maximum | −40 to +85°C |
| Input offset current | ±2 pA typical; ±50 pA maximum | 25°C |
| CMRR | 86 dB minimum; 100 dB typical | −12.5 V to +11.5 V common mode |
| Quiescent current per channel | 4 mA typical; 5 mA maximum | No output load |
| Open-loop gain | 104 dB minimum; 120 dB typical | 2 kΩ load, −13.8 V to +13.5 V output |
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Use the stated revision and conditions; product-page summaries may differ from the detailed table.
Audio and noise
Typical values at the manufacturer test conditions
Manufacturer specifications 6 parameters
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| Parameter | Value | Conditions / notes |
|---|---|---|
| THD + noise | 0.00008% | 1 kHz, gain 1, 3 Vrms output, 2 kΩ load |
| THD + noise with heavier load | 0.00015% | Same conditions, 600 Ω load |
| Input voltage-noise density | 8 nV/√Hz | 1 kHz |
| Integrated input voltage noise | 1.2 µVrms | 20 Hz–20 kHz |
| Input current-noise density | 3 fA/√Hz | 1 kHz |
| Channel separation | 126 dB typical | 20 kHz, 2 kΩ load |
No specifications match. Try a parameter name or a unit.
These values describe the IC test setup, not the total noise or distortion of a finished audio system.
Bandwidth, settling and output
±15 V reference conditions
Manufacturer specifications 6 parameters
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| Parameter | Value | Conditions / notes |
|---|---|---|
| Gain-bandwidth product | 8 MHz typical | Closed-loop bandwidth also depends on noise gain |
| Slew rate | ±20 V/µs typical | Specified by design |
| Settling to 0.1% / 0.01% | 0.7 µs / 1 µs typical | 10 V step, gain 1, 100 pF load |
| Output swing with 2 kΩ load | V− + 1.2 V to V+ − 1.5 V | Specified output-voltage interval |
| Output swing with 10 kΩ load | V− + 0.5 V to V+ − 1.2 V | Lighter load permits greater swing |
| Short-circuit current | 36 mA source / −30 mA sink typical | Fault characterization, not a normal load target |
No specifications match. Try a parameter name or a unit.
Check stability and output current when adding cables or capacitive loads.
Practical design notes
Stable feedback and low-noise layout
Manufacturer specifications 6 parameters
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| Parameter | Value | Conditions / notes |
|---|---|---|
| Supply bypass | 100 nF from each rail to signal GND | Place close to pins 8 and 4; add suitable local bulk storage |
| Feedback loops | Keep short and separated from noisy outputs | Channel A: pins 1–2; channel B: pins 7–6 |
| High source impedance | Bias-current and leakage errors still apply | Clean the board and avoid unnecessarily high feedback resistance |
| Single-supply audio | Provide a suitable midpoint reference | Ground is not automatically a valid signal bias |
| Input outside the rails | Requires current limiting | Manufacturer absolute input-current limit is ±10 mA |
| Package distinction | OPA2134 is the dual version | OPA134 and OPA4134 use different physical maps |
No specifications match. Try a parameter name or a unit.
The reference circuit is a light-load gain demonstration, not a headphone or loudspeaker power amplifier.
Two-channel amplifier example
±15 V rails · 0 V signal reference
Manufacturer specifications 7 parameters
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| Parameter | Value | Conditions / notes |
|---|---|---|
| Input VIN | 0.50 V | Pins 3 and 5; common signal ground |
| Channel A feedback | 20 kΩ | OUT1 pin 1 to IN1− pin 2 |
| Channel A ground resistor | 10 kΩ | IN1− pin 2 to 0 V |
| Channel A ideal output | 1.50 V | 0.50 × (1 + 20 / 10) |
| Channel B feedback | Direct connection | OUT2 pin 7 to IN2− pin 6 |
| Channel B ideal output | 0.50 V | Unity-gain follower |
| Bypass capacitors | 100 nF per rail | Each supply rail to the 0 V midpoint |
No specifications match. Try a parameter name or a unit.
The 0 V reference is not the negative supply pin. Keep both rail-bypass loops short.
Physical pin reference
OPA2134PA · PDIP-8
Manufacturer specifications 5 parameters
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| Parameter | Value | Conditions / notes |
|---|---|---|
| Lead pitch | 2.54 mm | Through-hole |
| Channel A | OUT1 1; IN1− 2; IN1+ 3 | Independent feedback loop |
| Channel B | IN2+ 5; IN2− 6; OUT2 7 | Independent feedback loop |
| Supply | V− 4; V+ 8 | Shared by both channels |
| Package orientation | Top view; pin 1 at the marker | Counterclockwise numbering |
No specifications match. Try a parameter name or a unit.
This dual-amplifier pinout differs from single amplifiers such as TL081 or LM741.
Connections by function
Select a pin for its function, connection guidance and electrical notes.