OP484FS-REEL Equivalent & Substitute Parts

Part Overview

The OP484FS-REEL is a general-purpose operational amplifier integrated circuit manufactured by Analog Devices Inc., configured as a 4-circuit rail-to-rail amplifier in a 14-SOIC surface mount package. This device is classified as obsolete, indicating that direct procurement from primary sources is limited. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support ongoing production requirements for applications utilizing this amplifier topology.

Key Parameters

Parameter	Value
Amplifier Type	General Purpose
Number of Circuits	4
Output Type	Rail-to-Rail
Slew Rate	4 V/µs
Gain Bandwidth Product	4.25 MHz
Current - Input Bias	80 nA
Voltage - Input Offset	250 µV
Current - Output / Channel	10 mA
Voltage - Supply Span (Min)	3 V
Voltage - Supply Span (Max)	36 V
Operating Temperature	-40°C ~ 125°C
Mounting Type	Surface Mount
Package / Case	14-SOIC (0.154", 3.90mm Width)
Moisture Sensitivity Level (MSL)	3 (168 Hours)

Substitute Part Grouping Explanation

Substitution of the OP484FS-REEL is determined by the following critical parameters: amplifier type (general purpose), number of circuits (4), output type (rail-to-rail), supply voltage range compatibility (3 V to 36 V minimum), operating temperature range, and surface mount package configuration. Substitute parts are grouped into two categories based on packaging and performance characteristics:

Direct Package Equivalents (14-SOIC): Parts maintaining identical or compatible 14-SOIC packaging with matching electrical specifications within the defined parameter ranges.

Alternative Package Configurations (14-TSSOP, 14-SO): Parts with equivalent electrical performance but different surface mount package geometries, requiring PCB layout modifications.

The key parameters determining substitution eligibility are: four-circuit configuration, rail-to-rail output capability, supply voltage range overlap with the original specification (minimum 3 V, maximum 36 V), and surface mount mounting type. Parts with significantly different slew rates, gain bandwidth products, or supply voltage limits may require circuit redesign validation.

Parameter Comparison

Part Number	Manufacturer	Product Status	Slew Rate (V/µs)	GBW (MHz)	Input Bias (nA)	Input Offset (µV)	Output / Ch (mA)	Supply Min (V)	Supply Max (V)	Temp Range (°C)	Package
OP484FS-REEL	Analog Devices	Obsolete	4.0	4.25	80	250	10	3	36	-40 ~ 125	14-SOIC
OP484FSZ-REEL	Analog Devices	Active	4.0	4.25	80	250	10	3	36	-40 ~ 125	14-SOIC
ADA4084-4ARUZ-RL	Analog Devices	Active	4.6	15.9	140	60	30	3	30	-40 ~ 125	14-TSSOP
LT1496CS#PBF	Analog Devices	Active	0.001	0.0027	0.25	200	1.5	2.2	36	0 ~ 70	14-SO
LT1496CS#TRPBF	Analog Devices	Active	0.001	0.0027	0.25	200	1.5	2.2	36	0 ~ 70	14-SO
LT1496HS#PBF	Analog Devices	Active	0.001	0.0027	0.25	200	1.5	2.2	36	-40 ~ 125	14-SO
LT1496HS#TRPBF	Analog Devices	Active	0.001	0.0027	0.25	200	1.5	2.2	36	-40 ~ 125	14-SO
LT1496IS#PBF	Analog Devices	Active	0.001	0.0027	0.25	200	1.5	2.2	36	0 ~ 85	14-SO
LT1496IS#TRPBF	Analog Devices	Active	0.001	0.0027	0.25	200	1.5	2.2	36	-40 ~ 85	14-SO
OPA4171AQDRQ1	Texas Instruments	Active	1.5	3.0	0.008	250	35	4.5	36	-40 ~ 125	14-SOIC

Engineering Selection Recommendations

Direct Replacement (Identical Specifications):

OP484FSZ-REEL is the direct active equivalent to the obsolete OP484FS-REEL. This part maintains identical electrical parameters, supply voltage range, operating temperature range, and 14-SOIC package configuration. The OP484FSZ-REEL is classified as active product status with ROHS3 compliance and REACH unaffected designation, making it the primary substitution choice for applications requiring no circuit modifications.

Package-Compatible Alternative (14-SOIC):

OPA4171AQDRQ1 (Texas Instruments) is a 14-SOIC packaged general-purpose four-circuit rail-to-rail amplifier with active product status and AEC-Q100 automotive qualification. This part operates within the supply voltage range (4.5 V to 36 V) and temperature range (-40°C to 125°C) of the original device. The OPA4171AQDRQ1 exhibits lower input bias current (8 pA) and higher output current capability (35 mA per channel) compared to the OP484FS-REEL. The minimum supply voltage requirement of 4.5 V (versus 3 V for the original) must be evaluated for applications operating at lower supply levels.

Alternative Package Options (14-TSSOP, 14-SO):

The ADA4084-4ARUZ-RL (14-TSSOP package) and LT1496 series devices (14-SO package) provide functional equivalence with different package geometries. The ADA4084-4ARUZ-RL offers enhanced performance characteristics (15.9 MHz gain bandwidth product, 4.6 V/µs slew rate) but requires PCB layout redesign due to package change. The LT1496 series (available in multiple temperature and packaging variants) operates at significantly lower slew rates and bandwidth, suitable only for applications not requiring the performance envelope of the original OP484FS-REEL.

Compliance and Certification:

All recommended active substitutes carry ROHS3 compliance and REACH unaffected status. The OPA4171AQDRQ1 includes AEC-Q100 automotive qualification, appropriate for automotive and harsh environment applications.

Frequently Asked Questions (FAQ)

Q: Can OP484FSZ-REEL directly replace OP484FS-REEL without circuit modifications?

A: Yes. The OP484FSZ-REEL maintains identical electrical specifications, supply voltage range (3 V to 36 V), operating temperature range (-40°C to 125°C), and 14-SOIC package configuration. No circuit modifications are required for direct substitution.

Q: What is the primary difference between OP484FS-REEL and OP484FSZ-REEL?

A: The OP484FS-REEL is classified as obsolete product status, while OP484FSZ-REEL is active. Both parts share identical electrical and package specifications. The OP484FSZ-REEL is the recommended active equivalent for new designs and ongoing production.

Q: Can OPA4171AQDRQ1 replace OP484FS-REEL in all applications?

A: OPA4171AQDRQ1 is compatible with applications operating at supply voltages of 4.5 V or higher. Applications requiring operation below 4.5 V supply voltage cannot use this substitute. The OPA4171AQDRQ1 offers superior performance characteristics (lower input bias current, higher output current) and automotive qualification, making it suitable for demanding applications within its supply voltage specification.

Q: Why do LT1496 series devices have significantly different performance parameters?

A: The LT1496 series is optimized for ultra-low power consumption applications, featuring slew rates of 0.001 V/µs and gain bandwidth products of 2.7 kHz. These devices are not suitable for applications requiring the 4 V/µs slew rate and 4.25 MHz bandwidth of the OP484FS-REEL. The LT1496 series represents a different product category within the general-purpose amplifier family.

Q: What packaging considerations apply when selecting ADA4084-4ARUZ-RL as a substitute?

A: The ADA4084-4ARUZ-RL uses a 14-TSSOP package (0.173", 4.40mm width) compared to the 14-SOIC package (0.154", 3.90mm width) of the OP484FS-REEL. PCB layout modifications are required to accommodate the different package footprint. Pin-to-pin compatibility must be verified against the specific application schematic.

Q: Are all substitute parts RoHS compliant?

A: Yes. All active substitute parts listed carry ROHS3 compliance certification. The obsolete OP484FS-REEL does not include RoHS status in its specification.

Q: What is the moisture sensitivity level (MSL) difference between substitute options?

A: OP484FS-REEL and OPA4171AQDRQ1 both carry MSL 3 (168 Hours) rating. The LT1496 series and ADA4084-4ARUZ-RL carry MSL 1 (Unlimited) rating, indicating superior moisture resistance and reduced handling constraints during storage and assembly.

Q: Can I use LT1496HS#PBF for applications requiring -40°C to 125°C operation?

A: Yes. LT1496HS#PBF is rated for -40°C to 125°C operating temperature range, matching the original OP484FS-REEL specification. However, the significantly different electrical performance parameters (0.001 V/µs slew rate versus 4 V/µs, 2.7 kHz bandwidth versus 4.25 MHz) make this device unsuitable for applications requiring the original performance envelope.

Q: What inventory availability should I consider for production planning?

A: OP484FSZ-REEL (active equivalent) has 8,978 pieces in stock. OPA4171AQDRQ1 has 27,800 pieces available. ADA4084-4ARUZ-RL has 50,100 pieces in stock. The LT1496 series variants range from 948 to 4,058 pieces. Inventory levels should be evaluated against production volume and lead time requirements.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message