LM833N Equivalent & Substitute Parts

Part Overview

The LM833N is a dual-channel audio amplifier integrated circuit manufactured by STMicroelectronics in 8-Mini DIP through-hole packaging. This device is classified as obsolete, though 15,805 units remain in current inventory. The LM833N operates across a wide supply voltage range of 5V to 30V and is designed for audio frequency applications with a gain bandwidth product of 15 MHz and slew rate of 7V/µs. Due to its obsolete status, equivalent and substitute parts are necessary for new designs, long-term availability assurance, and performance optimization in specific application requirements.

Key Parameters

Parameter	LM833N Value	Unit
Amplifier Type	Audio	—
Number of Circuits	2	—
Slew Rate	7	V/µs
Gain Bandwidth Product	15	MHz
Current - Input Bias	300	nA
Voltage - Input Offset	300	µV
Current - Supply	4	mA
Current - Output / Channel	37	mA
Voltage - Supply Span (Min)	5	V
Voltage - Supply Span (Max)	30	V
Operating Temperature	-40 to 105	°C
Package / Case	8-DIP (0.300", 7.62mm)	—
Mounting Type	Through Hole	—
RoHS Status	ROHS3 Compliant	—
Product Status	Obsolete	—

Substitute Part Grouping Explanation

Substitution of the LM833N is determined by compatibility across the following critical parameters: dual-channel configuration (2 circuits), 8-DIP through-hole package format, supply voltage range overlap, and functional amplifier classification. The LM833N operates as an audio amplifier with moderate bandwidth and slew rate characteristics.

Substitute parts are grouped into three functional categories based on amplifier type and performance characteristics:

Category 1: J-FET Amplifiers (AD648JNZ, AD648KNZ, AD712JNZ, AD712KNZ, LF353N/NOPB) — These devices feature J-FET input stages with very low input bias current (pA range) and are suitable for applications requiring high input impedance and low noise. These parts have reduced supply voltage minimums (9V to 10V) compared to the LM833N.

Category 2: General Purpose Amplifiers (AD706JNZ, AD708JNZ, AD827JNZ, AS358P-E1, BA15218) — These devices provide general-purpose operational amplifier functionality with varying bandwidth and slew rate characteristics. The AS358P-E1 and BA15218 support lower minimum supply voltages (3V and 4V respectively), while AD827JNZ offers significantly higher slew rate (300V/µs) and bandwidth (50 MHz).

All substitute parts maintain the 8-DIP through-hole package format, dual-channel configuration, and RoHS3 compliance. Supply voltage range compatibility must be verified for each application.

Parameter Comparison

Part Number	Manufacturer	Amplifier Type	Slew Rate (V/µs)	Gain Bandwidth Product (MHz)	Input Bias Current	Input Offset Voltage (µV)	Supply Min (V)	Supply Max (V)	Operating Temp (°C)	Product Status
LM833N	STMicroelectronics	Audio	7	15	300 nA	300	5	30	-40 to 105	Obsolete
AD648JNZ	Analog Devices Inc.	J-FET	1.8	1	5 pA	750	9	36	0 to 70	Active
AD648KNZ	Analog Devices Inc.	J-FET	1.8	1	3 pA	300	9	36	0 to 70	Active
AD706JNZ	Analog Devices Inc.	General Purpose	0.15	0.8	50 pA	30	4	36	0 to 70	Active
AD708JNZ	Analog Devices Inc.	General Purpose	0.3	0.9	1 nA	30	6	36	0 to 70	Active
AD712JNZ	Analog Devices Inc.	J-FET	20	—	25 pA	300	9	36	0 to 70	Active
AD712KNZ	Analog Devices Inc.	J-FET	20	—	25 pA	300	9	36	0 to 70	Active
AD827JNZ	Analog Devices Inc.	General Purpose	300	50	3.3 µA	300	9	36	0 to 70	Active
AS358P-E1	Diodes Incorporated	General Purpose	—	—	20 nA	2000	3	36	-40 to 85	Active
BA15218	Rohm Semiconductor	General Purpose	3	10	50 nA	500	4	32	-40 to 85	Active
LF353N/NOPB	Texas Instruments	J-FET	13	4	50 pA	5000	10	36	0 to 70	Active

Engineering Selection Recommendations

All listed substitute parts are manufactured by established semiconductor suppliers and maintain RoHS3 compliance and REACH unaffected status, consistent with the LM833N. The following selection criteria apply:

For Direct Audio Amplifier Replacement: BA15218 provides the closest performance match to the LM833N with comparable slew rate (3V/µs versus 7V/µs), gain bandwidth product (10 MHz versus 15 MHz), and supply voltage range (4V to 32V). Operating temperature range extends to -40°C to 85°C, suitable for industrial applications. This part is active and in production.

For Low Input Bias Current Applications: AD648KNZ and AD712JNZ offer J-FET input stages with input bias current in the pA range, compared to the LM833N's 300 nA. AD712JNZ provides superior slew rate (20V/µs) and is recommended where high-speed signal handling is required. Both require minimum 9V supply voltage.

For Extended Temperature Range: AS358P-E1 and BA15218 both support -40°C to 85°C operating temperature, matching the LM833N's lower temperature limit. AS358P-E1 operates from 3V minimum supply, enabling single-supply applications.

For High-Speed Applications: AD827JNZ delivers 300V/µs slew rate and 50 MHz gain bandwidth product, substantially exceeding LM833N performance. This part is suitable for applications requiring significantly faster signal processing.

All substitute parts are currently in active production status, ensuring long-term availability and supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can the LM833N be directly replaced with any of these substitute parts without circuit modification?

A: Direct pin-compatible replacement is possible due to identical 8-DIP package format and dual-channel configuration. However, circuit performance will vary based on differences in slew rate, bandwidth, input bias current, and supply voltage requirements. Applications with strict performance specifications may require circuit optimization.

Q: What is the primary difference between J-FET and General Purpose amplifier substitutes?

A: J-FET input amplifiers (AD648, AD712, LF353) feature extremely low input bias current (pA range) and high input impedance, making them suitable for high-impedance signal sources and low-noise applications. General Purpose amplifiers (AD706, AD708, AD827, AS358, BA15218) offer more conventional input characteristics with higher input bias current but often provide better overall performance metrics such as slew rate and bandwidth.

Q: Are there supply voltage compatibility issues when substituting the LM833N?

A: Yes. The LM833N operates from 5V to 30V. Most J-FET substitutes require minimum 9V to 10V supply voltage. General Purpose alternatives such as AS358P-E1 operate from 3V minimum, while BA15218 requires 4V minimum. Verify that your power supply meets the substitute part's minimum voltage requirement before implementation.

Q: Which substitute part best matches the LM833N's operating temperature range?

A: The LM833N operates from -40°C to 105°C. No substitute part in this list matches the upper temperature limit of 105°C. AS358P-E1 and BA15218 both support -40°C to 85°C, covering the lower temperature range. For applications requiring operation above 85°C, alternative parts outside this substitute list must be evaluated.

Q: What is the significance of input offset voltage differences?

A: Input offset voltage determines DC accuracy in precision applications. The LM833N specifies 300 µV. AD648KNZ, AD712 variants, and AD827JNZ match this specification at 300 µV. AD706JNZ and AD708JNZ offer superior performance at 30 µV. AS358P-E1 and LF353N/NOPB have higher offset voltages (2 mV and 5 mV respectively), which may require additional circuit compensation in precision applications.

Q: Is the LM833N's 15 MHz gain bandwidth product critical for substitution?

A: The 15 MHz bandwidth is moderate for audio applications. Most substitutes provide lower bandwidth (0.8 MHz to 4 MHz), except AD827JNZ (50 MHz). For audio frequency applications below 20 kHz, lower bandwidth substitutes are functionally adequate. For applications requiring the full 15 MHz bandwidth, AD827JNZ or BA15218 (10 MHz) are appropriate choices.

Q: Can the LM833N be used in single-supply applications?

A: The LM833N requires dual supply operation with minimum 5V span. For single-supply applications, AS358P-E1 is suitable, operating from 3V to 36V single supply. Other substitutes require dual supply configuration or higher minimum voltages.

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