TLE2037IDRG4 Equivalent & Substitute Parts

Part Overview

The TLE2037IDRG4 is a general purpose operational amplifier manufactured by Texas Instruments in the Excalibur™ series. This device is a single-circuit, 8-SOIC surface mount integrated circuit designed for linear amplification applications. The TLE2037IDRG4 is classified as obsolete, making identification of functionally equivalent substitute parts essential for ongoing design support, production continuity, and component sourcing. Substitute parts must maintain electrical compatibility across key performance parameters including gain bandwidth product, slew rate, input offset voltage, and supply voltage specifications.

Key Parameters

Parameter	Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	1	—
Slew Rate	7.5	V/µs
Gain Bandwidth Product	50	MHz
Current - Input Bias	15	nA
Voltage - Input Offset	20	µV
Current - Supply	3.8	mA
Current - Output / Channel	50	mA
Voltage - Supply Span (Min)	8	V
Voltage - Supply Span (Max)	38	V
Operating Temperature	0 to 70	°C
Package / Case	8-SOIC (0.154", 3.90mm Width)	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the TLE2037IDRG4 are selected based on strict electrical and mechanical compatibility criteria. The primary substitution logic is based on the following allowed parameters:

Electrical Compatibility Criteria:

Amplifier type classification (general purpose or instrumentation)
Gain bandwidth product (50 MHz baseline)
Slew rate performance (7.5 V/µs baseline)
Input bias current (15 nA baseline)
Input offset voltage (20 µV baseline)
Supply voltage range (8 V to 38 V minimum requirement)
Output current capability (50 mA baseline)
Supply current consumption (3.8 mA baseline)

Mechanical Compatibility Criteria:

Package type: 8-SOIC surface mount
Physical dimensions: 0.154" width, 3.90mm width
Mounting type: Surface mount

Compliance Criteria:

RoHS3 compliance
Moisture sensitivity level MSL 1
REACH unaffected status

Substitutes are grouped into two categories: direct equivalents (same amplifier type and comparable electrical performance) and functional alternatives (different amplifier type but compatible electrical parameters within application tolerance).

Parameter Comparison

Parameter	TLE2037IDRG4	TLE2037IDR	AD8229HRZ-R7	LT1028CS8#TRPBF	OP37GS8#PBF
Manufacturer	Texas Instruments	Texas Instruments	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.
Amplifier Type	General Purpose	General Purpose	Instrumentation	General Purpose	General Purpose
Number of Circuits	1	1	1	1	1
Slew Rate (V/µs)	7.5	7.5	22	15	17
Gain Bandwidth Product (MHz)	50	50	15	75	63
Current - Input Bias (nA)	15	15	70	30	15
Voltage - Input Offset (µV)	20	20	100	20	30
Current - Supply (mA)	3.8	3.8	6.7	7.6	—
Current - Output / Channel (mA)	50	50	35	—	—
Voltage - Supply Span Min (V)	8	8	8	8	8
Voltage - Supply Span Max (V)	38	38	34	36	36
Operating Temperature (°C)	0 to 70	0 to 70	-40 to 175	0 to 70	-25 to 85
Package / Case	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC
Product Status	Obsolete	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Primary Substitute: TLE2037IDR

The TLE2037IDR is the manufacturer-recommended direct equivalent for the TLE2037IDRG4. This part maintains identical electrical specifications across all key parameters: 7.5 V/µs slew rate, 50 MHz gain bandwidth product, 15 nA input bias current, and 20 µV input offset voltage. The TLE2037IDR is classified as active product status, ensuring long-term availability and supply chain continuity. Both parts are RoHS3 compliant with MSL 1 moisture sensitivity rating. The primary difference is packaging format: TLE2037IDR is supplied in Tape & Reel format versus the original part's standard packaging. This substitute is suitable for direct replacement in all applications where the TLE2037IDRG4 was originally specified.

Secondary Substitute: OP37GS8#PBF

The OP37GS8#PBF is a general purpose operational amplifier from Analog Devices Inc. with enhanced performance characteristics. This part offers higher slew rate (17 V/µs versus 7.5 V/µs) and higher gain bandwidth product (63 MHz versus 50 MHz), providing improved dynamic performance. Input bias current matches at 15 nA. Input offset voltage is slightly higher at 30 µV versus 20 µV. Supply voltage range is 8 V to 36 V, which is compatible with the original part's 8 V to 38 V range. Operating temperature range extends to -25°C to 85°C. This substitute is suitable for applications requiring enhanced speed performance while maintaining general purpose amplifier functionality.

Tertiary Substitute: LT1028CS8#TRPBF

The LT1028CS8#TRPBF is a general purpose operational amplifier from Analog Devices Inc. offering superior gain bandwidth product (75 MHz versus 50 MHz) and higher slew rate (15 V/µs versus 7.5 V/µs). Input bias current is 30 nA, which is higher than the original 15 nA specification. Input offset voltage matches at 20 µV. Supply voltage range is 8 V to 36 V. This substitute provides enhanced bandwidth performance and is suitable for applications where increased frequency response is beneficial.

Alternative Substitute: AD8229HRZ-R7

The AD8229HRZ-R7 is an instrumentation amplifier from Analog Devices Inc. This part differs from the original general purpose amplifier classification. It offers higher slew rate (22 V/µs) and lower gain bandwidth product (15 MHz). Input bias current is significantly higher at 70 nA, and input offset voltage is higher at 100 µV. Supply voltage range is 8 V to 34 V. Operating temperature range is -40°C to 175°C, providing extended temperature capability. This substitute is suitable only for applications where instrumentation amplifier topology is acceptable and the lower bandwidth requirement is compatible with system specifications.

All substitute parts maintain 8-SOIC surface mount packaging, RoHS3 compliance, and MSL 1 moisture sensitivity rating, ensuring mechanical and environmental compatibility with the original design.

Frequently Asked Questions (FAQ)

Q1: Can TLE2037IDR be used as a direct replacement for TLE2037IDRG4?

A: Yes. The TLE2037IDR is the manufacturer-recommended direct equivalent. Both parts share identical electrical specifications including 7.5 V/µs slew rate, 50 MHz gain bandwidth product, 15 nA input bias current, and 20 µV input offset voltage. The primary difference is packaging format (Tape & Reel versus standard packaging). Both are RoHS3 compliant with MSL 1 rating and 8-SOIC surface mount package. TLE2037IDR is active product status, ensuring supply continuity.

Q2: What is the key difference between general purpose and instrumentation amplifier substitutes?

A: General purpose amplifiers (TLE2037IDRG4, TLE2037IDR, OP37GS8#PBF, LT1028CS8#TRPBF) are designed for broad applications with emphasis on gain and bandwidth. Instrumentation amplifiers (AD8229HRZ-R7) are optimized for precision measurement with high input impedance and common-mode rejection. The AD8229HRZ-R7 has lower bandwidth (15 MHz) but higher input bias current (70 nA). Use instrumentation amplifier substitutes only if your application specifically requires instrumentation amplifier topology.

Q3: Which substitute offers the best performance upgrade?

A: The LT1028CS8#TRPBF provides the highest gain bandwidth product at 75 MHz and 15 V/µs slew rate, representing a 50% improvement in bandwidth and 100% improvement in slew rate over the original TLE2037IDRG4. The OP37GS8#PBF offers 63 MHz bandwidth and 17 V/µs slew rate. Both maintain input bias current at or near 15 nA and input offset voltage at 20-30 µV. Selection depends on whether your application requires maximum bandwidth or balanced performance.

Q4: Are all substitutes compatible with the original 8-38V supply voltage range?

A: No. The original TLE2037IDRG4 supports 8 V to 38 V supply range. Substitute parts have the following maximum supply voltages: TLE2037IDR (38 V), OP37GS8#PBF (36 V), LT1028CS8#TRPBF (36 V), and AD8229HRZ-R7 (34 V). If your design requires operation above 36 V, only TLE2037IDR maintains full compatibility. For designs operating at 36 V or below, all substitutes are compatible.

Q5: What is the impact of higher input bias current in substitute parts?

A: Input bias current affects input impedance and can introduce offset errors in high-impedance circuits. The original TLE2037IDRG4 has 15 nA input bias current. Substitutes maintain this specification (TLE2037IDR, OP37GS8#PBF) or increase it moderately (LT1028CS8#TRPBF at 30 nA, AD8229HRZ-R7 at 70 nA). For applications with source impedance below 10 kΩ, the difference is negligible. For high-impedance applications (>100 kΩ), use TLE2037IDR or OP37GS8#PBF to minimize bias current effects.

Q6: Can I use OP37GS8#PBF in a temperature-critical application?

A: The OP37GS8#PBF has extended operating temperature range (-25°C to 85°C) compared to the original TLE2037IDRG4 (0°C to 70°C). This makes it suitable for applications requiring operation below 0°C or above 70°C. However, the AD8229HRZ-R7 offers the widest temperature range (-40°C to 175°C) if extreme temperature operation is required. Verify that the extended temperature capability does not introduce unacceptable performance variations for your specific application.

Q7: What packaging considerations apply to these substitutes?

A: All substitute parts use 8-SOIC surface mount package with 0.154" width and 3.90mm width, matching the original TLE2037IDRG4 mechanical footprint. Packaging format differs: TLE2037IDR is supplied in Tape & Reel format, OP37GS8#PBF in Tube format, and LT1028CS8#TRPBF in Tape & Reel format. These format differences do not affect PCB compatibility. Verify tape specifications and reel compatibility with your assembly equipment if using automated placement.

Q8: Are all substitutes RoHS3 compliant?

A: Yes. All substitute parts (TLE2037IDR, AD8229HRZ-R7, LT1028CS8#TRPBF, OP37GS8#PBF) are RoHS3 compliant with MSL 1 moisture sensitivity rating, matching the original TLE2037IDRG4. All parts are REACH unaffected. This ensures environmental and regulatory compatibility for applications subject to RoHS and REACH requirements.

Q9: Which substitute has the lowest supply current consumption?

A: The TLE2037IDR matches the original at 3.8 mA supply current, offering the lowest consumption among all substitutes. The OP37GS8#PBF does not specify supply current in the provided data. The LT1028CS8#TRPBF consumes 7.6 mA, and the AD8229HRZ-R7 consumes 6.7 mA. For battery-powered or power-constrained applications, TLE2037IDR is the optimal choice.

Q10: What is the inventory status of substitute parts?

A: TLE2037IDR has 1,315 pieces in stock. OP37GS8#PBF has 819 pieces. LT1028CS8#TRPBF has 88,988 pieces (highest availability). AD8229HRZ-R7 has 803 pieces. All substitutes are classified as active product status, ensuring ongoing availability. LT1028CS8#TRPBF offers the highest stock level for immediate procurement needs.

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