OPA684IDBVR Equivalent & Substitute Parts

Part Overview

The OPA684IDBVR is a current feedback amplifier manufactured by Texas Instruments, housed in a SOT-23-6 surface mount package. This single-circuit operational amplifier is designed for high-speed signal processing applications requiring wide bandwidth and fast slew rate performance. The part is currently in active production status with robust inventory availability of 17,936 units.

Substitute parts become necessary when the primary part experiences supply constraints, when design requirements demand alternative performance characteristics, or when manufacturing transitions require component qualification. The OPA684IDBVR has identified equivalents within the Texas Instruments product line and cross-manufacturer alternatives from Renesas Electronics Corporation that maintain functional compatibility within specified electrical and mechanical parameters.

Key Parameters

Parameter	Value	Unit
Amplifier Type	Current Feedback	—
Number of Circuits	1	—
Slew Rate	820	V/µs
Gain Bandwidth Product	1.9	GHz
-3dB Bandwidth	210	MHz
Current - Input Bias	5	µA
Voltage - Input Offset	1.5	mV
Current - Supply	1.7	mA
Current - Output / Channel	160	mA
Voltage - Supply Span (Min)	5	V
Voltage - Supply Span (Max)	12	V
Operating Temperature Range	-40 to 85	°C
Package / Case	SOT-23-6	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	2 (1 Year)	—

Substitute Part Grouping Explanation

Substitution eligibility for the OPA684IDBVR is determined by strict alignment across the following critical parameters:

Mandatory Compatibility Parameters:

Amplifier Type: Current Feedback
Number of Circuits: 1
Package / Case: SOT-23-6
Mounting Type: Surface Mount
Operating Temperature Range: -40°C to 85°C
Voltage Supply Span: Minimum 5V, Maximum 12V

Performance Parameters (within acceptable operational range):

Slew Rate: 820 V/µs (baseline)
-3dB Bandwidth: 210 MHz (baseline)
Current - Input Bias: 5 µA (baseline)
Voltage - Input Offset: 1.5 mV (baseline)
Current - Supply: 1.7 mA (baseline)
Current - Output / Channel: 160 mA (baseline)

Substitute parts are classified into two categories:

Parametric Equivalents: Parts that maintain identical or near-identical electrical specifications across all measured parameters, ensuring direct functional replacement without circuit redesign.

Manufacturer Recommended Alternatives: Parts that deviate in specific performance characteristics but remain functionally compatible within the SOT-23-6 package envelope and supply voltage specifications. These alternatives may exhibit enhanced performance in certain parameters (higher bandwidth, faster slew rate, lower supply current) or reduced performance in others, requiring engineering evaluation for specific application requirements.

Parameter Comparison

Parameter	OPA684IDBVR	OPA684IDBVT	EL5106IWZ-T7A	EL5160IWZ-T7	EL5160IWZ-T7A	EL5164IWZ-T7	EL5164IWZ-T7A
Manufacturer	Texas Instruments	Texas Instruments	Renesas Electronics	Renesas Electronics	Renesas Electronics	Renesas Electronics	Renesas Electronics
Amplifier Type	Current Feedback	Current Feedback	General Purpose	Current Feedback	Current Feedback	Current Feedback	Current Feedback
Slew Rate (V/µs)	820	820	4500	1700	1700	4700	4700
Gain Bandwidth Product (GHz)	1.9	1.9	—	—	—	—	—
-3dB Bandwidth (MHz)	210	210	380	200	200	600	600
Current - Input Bias (µA)	5	5	1.5	5	5	2	2
Voltage - Input Offset (mV)	1.5	1.5	1	1.6	1.6	1.5	1.5
Current - Supply (mA)	1.7	1.7	1.5	0.75	0.75	3.5	3.5
Current - Output / Channel (mA)	160	160	100	140	140	190	190
Voltage - Supply Span Min (V)	5	5	5	5	5	5	5
Voltage - Supply Span Max (V)	12	12	12	10	10	12	12
Operating Temperature (°C)	-40 to 85	-40 to 85	-40 to 85	-40 to 85	-40 to 85	-40 to 85	-40 to 85
Package / Case	SOT-23-6	SOT-23-6	SOT-23-6	SOT-23-6	SOT-23-6	SOT-23-6	SOT-23-6
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Product Status	Active	Active	Obsolete	Active	Active	Obsolete	Obsolete
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	2 (1 Year)	2 (1 Year)	2 (1 Year)	2 (1 Year)	2 (1 Year)	2 (1 Year)	2 (1 Year)
Inventory (Pcs)	17,936	1,737	4,122	2,705	1,910	2,956	1,069

Engineering Selection Recommendations

OPA684IDBVT (Texas Instruments)

The OPA684IDBVT is a parametric equivalent to the OPA684IDBVR, maintaining identical electrical specifications across all measured parameters. Both parts are current feedback amplifiers with 820 V/µs slew rate, 210 MHz bandwidth, and 1.9 GHz gain bandwidth product. The OPA684IDBVT is in active production status and ROHS3 compliant. This part is suitable for direct substitution when the OPA684IDBVR experiences supply constraints. Current inventory of 1,737 units is available.

EL5160IWZ-T7 and EL5160IWZ-T7A (Renesas Electronics Corporation)

The EL5160 series represents a current feedback amplifier alternative with reduced slew rate (1700 V/µs versus 820 V/µs) and lower -3dB bandwidth (200 MHz versus 210 MHz). Supply current is significantly reduced to 750 µA compared to 1.7 mA. Both variants are in active production status and ROHS3 compliant. The EL5160IWZ-T7 is packaged in Cut Tape format with 2,705 units available, while the EL5160IWZ-T7A is in Tape & Reel format with 1,910 units available. These parts are suitable for applications where reduced power consumption is prioritized and the slightly lower bandwidth is acceptable.

EL5164IWZ-T7 and EL5164IWZ-T7A (Renesas Electronics Corporation)

The EL5164 series represents a high-performance current feedback amplifier alternative with significantly enhanced specifications: 4700 V/µs slew rate, 600 MHz -3dB bandwidth, and 190 mA output current capability. Supply current is elevated to 3.5 mA. Both variants are marked as obsolete in product status, indicating discontinued manufacturing. The EL5164IWZ-T7 is in Cut Tape format with 2,956 units available, while the EL5164IWZ-T7A is in Cut Tape format with 1,069 units available. These parts are suitable for applications requiring enhanced bandwidth and slew rate performance, with the understanding that long-term availability is limited due to obsolete status.

EL5106IWZ-T7A (Renesas Electronics Corporation)

The EL5106IWZ-T7A is a general purpose amplifier (not current feedback) with significantly enhanced slew rate (4500 V/µs) and -3dB bandwidth (380 MHz). Input bias current is reduced to 1.5 µA, and supply current is 1.5 mA. The part is marked as obsolete in product status. This part is functionally different in amplifier topology and is suitable only for applications where general purpose amplifier characteristics are acceptable and the enhanced performance parameters are required. Inventory of 4,122 units is available.

Frequently Asked Questions (FAQ)

Q: Can the OPA684IDBVT be used as a direct replacement for the OPA684IDBVR?

A: Yes. The OPA684IDBVT is a parametric equivalent with identical electrical specifications. Both parts are current feedback amplifiers with 820 V/µs slew rate, 210 MHz bandwidth, and 1.9 GHz gain bandwidth product. Both are in active production status and ROHS3 compliant. The primary difference is packaging format and inventory availability.

Q: What is the key difference between the OPA684IDBVR and the EL5160 series?

A: The EL5160 series exhibits lower slew rate (1700 V/µs versus 820 V/µs) and slightly lower -3dB bandwidth (200 MHz versus 210 MHz). The significant advantage is reduced supply current consumption (750 µA versus 1.7 mA). Both maintain current feedback amplifier topology and SOT-23-6 packaging. The EL5160 series is suitable for power-constrained applications where the bandwidth reduction is acceptable.

Q: Why are the EL5164 parts marked as obsolete?

A: The EL5164 series is listed as obsolete, indicating that Renesas Electronics Corporation has discontinued manufacturing. While current inventory remains available (2,956 and 1,069 units respectively), long-term supply cannot be guaranteed. These parts should be considered for immediate-need applications only, with transition planning to active alternatives.

Q: Can the EL5106IWZ-T7A replace the OPA684IDBVR?

A: The EL5106IWZ-T7A is a general purpose amplifier, not a current feedback amplifier. While it shares the SOT-23-6 package and operating temperature range, the amplifier topology is fundamentally different. Substitution is possible only if the application circuit design is compatible with general purpose amplifier characteristics. The EL5106 exhibits higher slew rate (4500 V/µs) and bandwidth (380 MHz), which may introduce stability or noise considerations in circuits optimized for current feedback topology.

Q: What are the packaging format differences among the substitute parts?

A: The OPA684IDBVR and OPA684IDBVT are supplied in Tape & Reel (TR) format. The EL5160IWZ-T7 and EL5164IWZ-T7 are supplied in Cut Tape (CT) & Digi-Reel® format. The EL5160IWZ-T7A and EL5164IWZ-T7A are supplied in Tape & Reel (TR) format. Packaging format selection depends on manufacturing equipment compatibility and volume requirements. All parts maintain identical SOT-23-6 physical package dimensions.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts—OPA684IDBVT, EL5106IWZ-T7A, EL5160IWZ-T7, EL5160IWZ-T7A, EL5164IWZ-T7, and EL5164IWZ-T7A—are ROHS3 compliant. All parts also maintain Moisture Sensitivity Level 2 (1 Year) and are REACH unaffected.

Q: What is the maximum supply voltage for the EL5160 series?

A: The EL5160 series has a maximum supply voltage of 10V, compared to 12V for the OPA684IDBVR. Applications requiring 12V supply operation must use the OPA684IDBVR, OPA684IDBVT, EL5106IWZ-T7A, EL5164IWZ-T7, or EL5164IWZ-T7A.

Q: Which substitute part offers the lowest power consumption?

A: The EL5160 series (both EL5160IWZ-T7 and EL5160IWZ-T7A) offers the lowest supply current at 750 µA, compared to 1.7 mA for the OPA684IDBVR. This represents a 56% reduction in supply current consumption.

Q: Which substitute part offers the highest output current capability?

A: The EL5164 series (both EL5164IWZ-T7 and EL5164IWZ-T7A) offers the highest output current per channel at 190 mA, compared to 160 mA for the OPA684IDBVR. This represents a 19% increase in output current capability.

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