OPA134 — Datasheet Summary, Specs & Alternatives

01 — Overview

This TI datasheet covers the OPA134, OPA2134, and OPA4134 series of high-performance audio operational amplifiers. Designed for professional audio applications like line drivers and active filters, these devices offer exceptional sound quality with ultra-low distortion of 0.00008% and low noise at 8nV/√Hz. Key features include a true FET-input stage drawing only 5pA bias current, a high slew rate of 20V/µs, and an 8MHz bandwidth. They support a wide supply range from ±2.5V to ±18V and provide unity-gain stability across single, dual, and quad channel configurations.

02 — Key specifications

Datasheet parameters

Parameter	Min	Typ	Max	Conditions
quiescent current	4 mA	—	5 mA	IO = 0mA
output current	36 mA	—	—	Sourcing
supply voltage range	2.5 V	15 V	18 V	Dual supply
input offset voltage drift	—	2 µV/°C	—	TA = −40°C to +85°C
input offset voltage	—	1 mV	3.5 mV
gain bandwidth	—	8 MHz	—
cmrr	86 dB	100 dB	—	−12.5V ≤ VCM≤ 11.5V
operating temperature	—	—	85 °C
input offset current	—	2 pA	50 pA
input bias current	—	5 pA	100 pA
slew rate	—	20 MV/s	—
psrr	90 dB	106 dB	—	5V ≤ VS≤ 36V
input voltage noise density	—	8 nV/√Hz	—	f = 1kHz
settling time	—	700 ns	—	10V step, G = 1, CL = 100pF; 0.1%
channel count	—	1	—

03 — Alternatives

Closest matches to OPA134

MC33078 6.7× lower input offset voltage, 3.8× lower operating temperature, 2.9× lower slew rate

NE5532 2.4× lower operating temperature, 2.2× lower slew rate, 2.0× lower input offset voltage

TLV2370 14.3× lower slew rate, 9.6× lower quiescent current, 9.0× lower output current

MCP6021 6.0× higher input bias current, 4.5× lower quiescent current, 3.8× lower operating temperature

LMV358 8.0× lower gain bandwidth, 7.1× higher settling time, 5.0× higher input offset current

BA4580RF-E2 4.0× lower slew rate, 3.3× lower input offset voltage, 2.6× lower operating temperature

AD8065ART 18.1× higher gain bandwidth, 12.7× lower settling time, 9.0× higher slew rate

LM741 18.3× lower gain bandwidth, 7.5× higher input offset voltage drift, 2.6× lower quiescent current

04 — FAQ

Frequently asked questions

What is the channel count of the OPA134?

The channel count is 1.

What is the CMRR of the OPA134 when −12.5V ≤ VCM≤ 11.5V?

The CMRR is 100 dB when −12.5V ≤ VCM≤ 11.5V.

What is the gain bandwidth of the OPA134?

The gain bandwidth is 8 MHz.

What is the input bias current of the OPA134?

The input bias current is 5 pA.

What is the input offset current of the OPA134?

The input offset current is 2 pA.

What is the input offset voltage of the OPA134?

The input offset voltage is 1 mV.

What is the input offset voltage drift of the OPA134?

The input offset voltage drift is 2 µV/°C at TA = −40°C to +85°C.

What is the input voltage noise density of the OPA134 at f = 1kHz?

The input voltage noise density is 8 nV/√Hz at f = 1kHz.