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See Technical Specifications

OPA1642AIDGKT

Dual SoundPlus™ high-performance, JFET-input audio op amp

Manufacturer:

Texas Instruments, Inc
Mfr.Part #:

OPA1642AIDGKT
Datasheet:

OPA1642AIDGKT Datasheet (PDF)
Number of channels:

2
Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V):

5
Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V):

36
GBW (typ) (MHz):

11
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OPA1642AIDGKT General Description

The OPA1641 (single), OPA1642 (dual), and OPA1644 (quad) series are JFET-input, ultralow distortion, low-noise operational amplifiers fully specified for audio applications.

The OPA1641, OPA1642, and OPA1644 rail-to-rail output swing allows increased headroom, making these devices ideal for use in any audio circuit. Features include 5.1-nV/√Hz noise, low THD+N (0.00005%), a low input bias current of 2 pA, and low quiescent current of 1.8 mA per channel.

These devices operate over a very wide supply voltage range of ±2.25 V to ±18 V. The OPA1641, OPA1642, and OPA1644 series of operational amplifiers are unity-gain stable and provide excellent dynamic behavior over a wide range of load conditions.

The dual and quad versions feature completely independent circuitry for lowest crosstalk and freedom from interactions between channels, even when overdriven or overloaded.

The OPA1641, OPA1642, and OPA1644 are specified from –40°C to +85°C.

Key Features

Superior Sound Quality
True JFET Input Operational Amplifier
With Low Input Bias Current
Low Noise: 5.1 nV/√Hz at 1 kHz
Ultralow Distortion: 0.00005% at 1 kHz
High Slew Rate: 20 V/µs
Unity Gain Stable
No Phase Reversal
Low Quiescent Current:
1.8 mA per Channel
Rail-to-rail Output
Wide Supply Range: ±2.25 V to ±18 V
Single, Dual, and Quad Versions Available

Specifications

Number of channels	2	Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V)	5
Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V)	36	GBW (typ) (MHz)	11
Slew rate (typ) (V/µs)	20	Rail-to-rail	In to V-, Out
Vos (offset voltage at 25°C) (max) (mV)	3.5	Iq per channel (typ) (mA)	1.8
Vn at 1 kHz (typ) (nV√Hz)	5.1	Features	Burr-Brown™ Audio, EMI Hardened, Premium Sound
THD + N at 1 kHz (typ) (%)	0.00005	Rating	Catalog
Operating temperature range (°C)	-40 to 85	Iout (typ) (A)	0.03
Product type	Essential	Architecture	FET
CMRR (typ) (dB)	126	Input bias current (max) (pA)	20
feature-function	Speaker	feature-amplifier-type	Class-AB
feature-rail-to-rail	Rail to Rail Output	feature-typical-gain-bandwidth-product-mhz	11
feature-typical-psrr-db	137.07	feature-total-harmonic-distortion-noise	0.00005%@2000Ohm
feature-input-signal-type	Differential	feature-output-signal-type	Single
feature-output-type	2-Channel Stereo	feature-maximum-output-current-ma
feature-maximum-input-offset-voltage-mv	3.5@±18V	feature-maximum-input-bias-current-ua	0.00002@36V
feature-maximum-power-dissipation-mw		feature-packaging	Tape and Reel
feature-rad-hard		feature-pin-count	8
feature-cecc-qualified	No	feature-esd-protection	Yes
feature-military	No	feature-aec-qualified	No
feature-aec-qualified-number		feature-auto-motive	No
feature-p-pap	No	feature-eccn-code	EAR99
feature-svhc	No	feature-svhc-exceeds-threshold	No