OP249GSZ-REEL Equivalent & Substitute Parts

Part Overview

The OP249GSZ-REEL is a J-FET input operational amplifier manufactured by Analog Devices Inc., configured as a dual-channel (2 circuit) device in an 8-SOIC surface mount package. This component is classified as a linear amplifier and is actively produced. The OP249GSZ-REEL is supplied in Tape & Reel (TR) packaging format, suitable for automated assembly processes.

Equivalent and substitute parts are identified based on matching electrical performance parameters, package compatibility, and operational specifications. Substitution becomes necessary when the primary part number reaches end-of-life status, inventory constraints occur, or alternative sourcing is required while maintaining circuit functionality and performance characteristics.

Key Parameters

Parameter	OP249GSZ-REEL Value
Amplifier Type	J-FET
Number of Circuits	2
Slew Rate	22 V/µs
Gain Bandwidth Product	4.7 MHz
Current - Input Bias	30 pA
Voltage - Input Offset	400 µV
Current - Supply	5.6 mA
Current - Output / Channel	36 mA
Voltage - Supply Span (Min)	9 V
Voltage - Supply Span (Max)	36 V
Operating Temperature	-40°C ~ 85°C
Package / Case	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution logic for the OP249GSZ-REEL is based on the following critical parameters:

Primary Substitution Criteria:

Amplifier Type: J-FET input configuration
Number of Circuits: Dual-channel (2 circuits)
Package / Case: 8-SOIC form factor with 0.154" (3.90mm) width
Mounting Type: Surface Mount
Operating Temperature Range: Minimum -40°C to 85°C support
Voltage Supply Span: Minimum 9V to 36V support
RoHS3 Compliance and MSL Level 1 status

Substitution Categories:

Category 1: Direct J-FET Substitutes (LT1057 Series) Parts LT1057IS8#PBF, LT1057IS8#TRPBF, LT1057S8#PBF, and LT1057S8#TRPBF share identical J-FET amplifier architecture, dual-channel configuration, and 8-SOIC packaging. These devices differ in operating temperature range and packaging format (Tube vs. Tape & Reel). The LT1057 series exhibits lower input bias current (7 pA vs. 30 pA) and reduced supply current (1.7 mA vs. 5.6 mA), with comparable gain bandwidth product (5 MHz vs. 4.7 MHz).

Category 2: Extended Supply Range J-FET Substitutes (LT1113 and LT1169 Series) Parts LT1113CS8#PBF and LT1169CS8#PBF maintain J-FET input topology and dual-channel configuration in 8-SOIC packaging. These devices support extended maximum supply voltage (40V vs. 36V) and operate within the -40°C to 85°C temperature range. Trade-offs include reduced slew rate (3.9-4.2 V/µs vs. 22 V/µs) and higher input bias current (300 pA and 4 pA respectively).

Category 3: General Purpose Amplifier Substitutes (MC33072 and MC34072 Series) Parts MC33072ADR2G and MC34072ADR2G are general-purpose amplifiers with dual-channel configuration in 8-SOIC packaging. These devices feature broader supply voltage range (3V to 44V) and higher input bias current (100 nA). Operating temperature ranges differ: MC33072ADR2G supports -40°C to 85°C, while MC34072ADR2G supports 0°C to 70°C.

Category 4: Alternative J-FET Substitutes (OPA2131 and TL082) Part OPA2131UJ (Texas Instruments) and TL082IDT (STMicroelectronics) are J-FET dual-channel amplifiers in 8-SOIC packaging. OPA2131UJ operates within -40°C to 85°C range with 50 pA input bias current. TL082IDT includes automotive qualification (AEC-Q100) and extended operating temperature to 105°C, with 20 pA input bias current and 6V minimum supply voltage.

Parameter Comparison

Part Number	Manufacturer	Amplifier Type	Slew Rate (V/µs)	Gain BW (MHz)	Input Bias (pA)	Input Offset (µV)	Supply Current (mA)	Output Current (mA)	Supply Min (V)	Supply Max (V)	Temp Range (°C)	Packaging
OP249GSZ-REEL	Analog Devices	J-FET	22	4.7	30	400	5.6	36	9	36	-40 to 85	TR
LT1057IS8#PBF	Analog Devices	J-FET	13	5	7	220	1.7	—	20	36	-40 to 85	Tube
LT1057IS8#TRPBF	Analog Devices	J-FET	13	5	7	220	1.7	—	20	36	-40 to 85	TR
LT1057S8#PBF	Analog Devices	J-FET	13	5	7	220	1.7	—	20	36	0 to 70	Tube
LT1057S8#TRPBF	Analog Devices	J-FET	13	5	7	220	1.7	—	20	36	0 to 70	TR
LT1113CS8#PBF	Analog Devices	J-FET	3.9	5.6	300	550	5.3	—	9	40	-40 to 85	Tube
LT1169CS8#PBF	Analog Devices	J-FET	4.2	5.3	4	600	5.3	—	9	40	0 to 70	Tube
MC33072ADR2G	onsemi	General Purpose	13	4.5	100000	500	1.9	30	3	44	-40 to 85	TR
MC34072ADR2G	onsemi	General Purpose	13	4.5	100000	500	1.9	30	3	44	0 to 70	CT
OPA2131UJ	Texas Instruments	J-FET	10	4	50	1500	1.5	25	9	36	-40 to 85	Tube
TL082IDT	STMicroelectronics	J-FET	16	4	20	3000	1.4	40	6	36	-40 to 105	CT

Engineering Selection Recommendations

For Direct Substitution with Identical Operating Temperature Range (-40°C to 85°C):

LT1057IS8#TRPBF is the primary equivalent for OP249GSZ-REEL when Tape & Reel packaging is required. Both devices maintain J-FET input architecture, dual-channel configuration, 8-SOIC form factor, and identical operating temperature range. The LT1057IS8#TRPBF exhibits superior input bias current performance (7 pA vs. 30 pA) and reduced supply current consumption (1.7 mA vs. 5.6 mA). The minimum supply voltage requirement increases from 9V to 20V, which must be verified against circuit design specifications.

OPA2131UJ provides an alternative J-FET substitute with comparable slew rate (10 V/µs) and gain bandwidth product (4 MHz). This device maintains the -40°C to 85°C operating range and 9V minimum supply voltage. Input bias current is higher at 50 pA, and input offset voltage is significantly higher at 1.5 mV.

TL082IDT offers J-FET input performance with extended operating temperature range to 105°C and automotive qualification (AEC-Q100). This device features the lowest input bias current (20 pA) among J-FET substitutes and the highest output current capability (40 mA). Minimum supply voltage is reduced to 6V. All devices maintain ROHS3 compliance and MSL Level 1 status.

For Applications Requiring Extended Supply Voltage Range (40V Maximum):

LT1113CS8#PBF and LT1169CS8#PBF support maximum supply voltage of 40V, compared to 36V for the OP249GSZ-REEL. Both maintain J-FET input topology and dual-channel configuration in 8-SOIC packaging. LT1113CS8#PBF operates within -40°C to 85°C range with 300 pA input bias current. LT1169CS8#PBF operates within 0°C to 70°C range with exceptionally low input bias current (4 pA). Trade-offs include reduced slew rate (3.9-4.2 V/µs vs. 22 V/µs).

For Applications with Relaxed Operating Temperature Requirements (0°C to 70°C):

LT1057S8#TRPBF provides Tape & Reel packaging with identical electrical characteristics to LT1057IS8#TRPBF but operates within 0°C to 70°C range. MC34072ADR2G offers general-purpose amplifier topology with broader supply voltage range (3V to 44V) and reduced supply current (1.9 mA). LT1169CS8#PBF maintains J-FET input performance with extended supply voltage to 40V and exceptional input bias current (4 pA).

For Applications Requiring Broader Supply Voltage Range (3V to 44V):

MC33072ADR2G and MC34072ADR2G are general-purpose amplifiers with significantly extended supply voltage capability. MC33072ADR2G maintains -40°C to 85°C operating range, while MC34072ADR2G operates within 0°C to 70°C. Both devices feature 100 nA input bias current, which is substantially higher than J-FET alternatives. These devices are suitable for applications where supply voltage flexibility is prioritized over input bias current performance.

All substitute parts maintain ROHS3 compliance and MSL Level 1 (Unlimited) moisture sensitivity rating, ensuring compatibility with standard manufacturing and storage protocols.

Frequently Asked Questions (FAQ)

Q: Can LT1057IS8#TRPBF directly replace OP249GSZ-REEL in all applications?

A: LT1057IS8#TRPBF is functionally equivalent for applications where the minimum supply voltage requirement of 20V is acceptable. The OP249GSZ-REEL operates with a 9V minimum supply voltage. Both devices share J-FET input architecture, dual-channel configuration, 8-SOIC packaging, and -40°C to 85°C operating temperature range. The LT1057IS8#TRPBF offers superior input bias current performance (7 pA vs. 30 pA) and lower supply current consumption (1.7 mA vs. 5.6 mA). Circuit design must accommodate the higher minimum supply voltage requirement.

Q: What is the primary difference between LT1057IS8#TRPBF and LT1057S8#TRPBF?

A: The primary difference is operating temperature range. LT1057IS8#TRPBF operates from -40°C to 85°C, while LT1057S8#TRPBF operates from 0°C to 70°C. All other electrical parameters and packaging specifications are identical. Selection depends on the application's temperature operating requirements.

Q: Why does TL082IDT have a lower minimum supply voltage (6V) compared to OP249GSZ-REEL (9V)?

A: TL082IDT is designed with a lower minimum supply voltage specification of 6V, while OP249GSZ-REEL requires a minimum of 9V. This difference reflects different design approaches by STMicroelectronics and Analog Devices. TL082IDT is suitable for applications requiring lower supply voltage operation. Both devices maintain J-FET input topology and comparable gain bandwidth product (4 MHz).

Q: Can MC33072ADR2G or MC34072ADR2G be used as substitutes despite being general-purpose amplifiers rather than J-FET input devices?

A: MC33072ADR2G and MC34072ADR2G are general-purpose amplifiers with significantly different input characteristics compared to J-FET devices. Input bias current is 100 nA (compared to 30 pA for OP249GSZ-REEL), which is substantially higher. These devices are suitable for applications where input bias current is not a critical parameter and where the extended supply voltage range (3V to 44V) provides design advantages. Applications requiring low input bias current should prioritize J-FET input substitutes.

Q: What is the significance of the Tape & Reel (TR) packaging format?

A: Tape & Reel packaging is optimized for automated assembly processes and high-volume production. OP249GSZ-REEL is supplied in TR format. Equivalent parts in TR format include LT1057IS8#TRPBF, LT1057S8#TRPBF, and MC33072ADR2G. Parts supplied in Tube or Cut Tape (CT) format require different handling and assembly procedures. Selection of packaging format depends on manufacturing process requirements and assembly equipment compatibility.

Q: How does input bias current affect circuit performance?

A: Input bias current represents the small DC current flowing into the amplifier input terminals. Lower input bias current reduces offset voltage errors and improves performance in high-impedance circuits. OP249GSZ-REEL has 30 pA input bias current. LT1057 series devices offer 7 pA, while TL082IDT offers 20 pA. General-purpose amplifiers (MC33072/MC34072) have 100 nA input bias current, which is significantly higher. Applications with high-impedance signal sources benefit from lower input bias current specifications.

Q: What does RoHS3 compliance indicate?

A: RoHS3 compliance indicates the device meets Restriction of Hazardous Substances Directive requirements, restricting the use of specific hazardous materials including lead, mercury, cadmium, and hexavalent chromium. All listed substitute parts maintain ROHS3 compliance, ensuring compatibility with environmental regulations and industry standards.

Q: Why is Moisture Sensitivity Level (MSL) important?

A: Moisture Sensitivity Level indicates the device's susceptibility to moisture absorption during storage and handling. MSL Level 1 (Unlimited) means the device has unlimited shelf life under normal storage conditions without special moisture control requirements. OP249GSZ-REEL and most substitute parts maintain MSL Level 1 status. OPA2131UJ has MSL Level 3 (168 Hours), requiring more stringent moisture control during storage and handling.

Q: Can TL082IDT be used in automotive applications?

A: TL082IDT includes automotive qualification (AEC-Q100) and extended operating temperature range to 105°C, making it suitable for automotive applications. Other substitute parts do not carry automotive qualification. Selection of TL082IDT is appropriate for automotive-grade applications requiring extended temperature performance and industry qualification.

Q: What is the impact of slew rate differences between substitute parts?

A: Slew rate determines how quickly the amplifier output voltage can change in response to input signals. OP249GSZ-REEL has 22 V/µs slew rate. LT1057 series devices have 13 V/µs, while TL082IDT has 16 V/µs. LT1113CS8#PBF has the lowest slew rate at 3.9 V/µs. Applications requiring high-speed signal processing benefit from higher slew rate specifications. Lower slew rate may introduce distortion in high-frequency or high-amplitude signal applications.

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