OPA2134 Reference Tables, Pins & Specifications

Pin reference

Signal names, electrical functions and connection guidance

PDIP-8

Physical pin numbers8 pins

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OPA2134 pin functions and connections
Signal	Type	Function & connection
OUT1	Analog output	Channel A output. Connection guidance Return to IN1− through 20 kΩ; connect a high-impedance meter.
IN1−	Inverting input	Channel A negative-feedback node. Connection guidance Join 20 kΩ from OUT1 and 10 kΩ to signal ground.
IN1+	Non-inverting input	Channel A signal input. Connection guidance Apply VIN = 0.50 V relative to the 0 V midpoint.
V−	Negative supply	Negative rail shared by both amplifiers. Connection guidance Connect −15 V; bypass locally to 0 V with 100 nF.
IN2+	Non-inverting input	Channel B signal input. Connection guidance Connect to the same VIN in the illustrated follower.
IN2−	Inverting input	Channel B feedback input. Connection guidance Connect directly to OUT2 pin 7.
OUT2	Analog output	Channel B output. Connection guidance Connect to IN2−; leave unloaded or use a high-impedance instrument.
V+	Positive supply	Positive rail shared by both amplifiers. Connection guidance Connect +15 V; bypass locally to 0 V with 100 nF.

TI OPA2134 · Rev B

Manufacturer-referenced values6 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

The signal inputs cannot be assumed to work at either rail.

±15 V, 25°C, unless stated

Manufacturer-referenced values8 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

Use the stated revision and conditions; product-page summaries may differ from the detailed table.

Typical values at the manufacturer test conditions

Manufacturer-referenced values6 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

These values describe the IC test setup, not the total noise or distortion of a finished audio system.

±15 V reference conditions

Manufacturer-referenced values6 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

Check stability and output current when adding cables or capacitive loads.

Stable feedback and low-noise layout

Manufacturer-referenced values6 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

The reference circuit is a light-load gain demonstration, not a headphone or loudspeaker power amplifier.

±15 V rails · 0 V signal reference

Manufacturer-referenced values7 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

The 0 V reference is not the negative supply pin. Keep both rail-bypass loops short.

OPA2134PA · PDIP-8

Manufacturer-referenced values5 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

This dual-amplifier pinout differs from single amplifiers such as TL081 or LM741.