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LT1630CS8 Equivalent & Substitute Parts
Part Overview
The LT1630CS8 is a general-purpose operational amplifier manufactured by Analog Devices Inc., featuring dual circuits in a rail-to-rail configuration. This device is classified as an active product and is widely used in signal conditioning, filtering, and general analog signal processing applications. The LT1630CS8 is supplied in an 8-SOIC surface mount package with ROHS3 compliance and unlimited moisture sensitivity rating.
Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to component availability, procurement lead times, or design flexibility within specified parameter ranges.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Amplifier Type | General Purpose | — |
| Number of Circuits | 2 | — |
| Output Type | Rail-to-Rail | — |
| Slew Rate | 10 | V/µs |
| Gain Bandwidth Product | 30 | MHz |
| Current - Input Bias | 550 | nA |
| Voltage - Input Offset | 220 | µV |
| Current - Supply (x2 Channels) | 4.1 | mA |
| Current - Output / Channel | 70 | mA |
| Voltage - Supply Span (Min) | 2.7 | V |
| Voltage - Supply Span (Max) | 36 | V |
| Operating Temperature | -40 to 85 | °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 LT1630CS8 are grouped based on the following substitution criteria:
Direct Packaging Equivalent: Parts that maintain identical electrical specifications and package configuration are classified as direct substitutes. These include variants of the same base product number with different packaging formats (tube versus reel).
Functional Equivalents with Parameter Variance: Parts that share the same package type (8-SOIC), mounting method (surface mount), and core functionality (dual-channel general-purpose rail-to-rail amplifier) but exhibit different electrical performance characteristics are classified as functional equivalents. Substitution in this category requires verification that the application tolerates variations in slew rate, gain bandwidth product, input bias current, input offset voltage, supply current, and output current specifications.
Key Parameters Determining Substitution:
- Package type: 8-SOIC (0.154", 3.90mm Width)
- Mounting type: Surface Mount
- Amplifier type: General Purpose
- Number of circuits: 2
- Output type: Rail-to-Rail
- Voltage supply span compatibility: Minimum 2.7 V to maximum 36 V
- Operating temperature range: -40°C to 85°C minimum
- RoHS3 compliance
- Moisture sensitivity level: 1 (Unlimited)
Parameter Comparison
| Part Number | Manufacturer | Slew Rate (V/µs) | GBW (MHz) | Input Bias (nA) | Input Offset (µV) | Supply Current (mA) | Output Current (mA) | Supply Min (V) | Supply Max (V) | Temp Range (°C) | Package |
|---|---|---|---|---|---|---|---|---|---|---|---|
| LT1630CS8 | Analog Devices Inc. | 10 | 30 | 550 | 220 | 4.1 | 70 | 2.7 | 36 | -40 to 85 | 8-SOIC |
| LT1630CS8#PBF | Analog Devices Inc. | 10 | 30 | 550 | 220 | 4.1 | 70 | 2.7 | 36 | -40 to 85 | 8-SOIC |
| ADA4084-2ARZ | Analog Devices Inc. | 4.6 | 15.9 | 140 | 30 | 0.625 | 30 | 3 | 30 | -40 to 125 | 8-SOIC |
| ADA4084-2ARZ-R7 | Analog Devices Inc. | 4.6 | 15.9 | 140 | 30 | 0.625 | 30 | 3 | 30 | -40 to 125 | 8-SOIC |
| ADA4084-2ARZ-RL | Analog Devices Inc. | 4.6 | 15.9 | 140 | 30 | 0.625 | 30 | 3 | 30 | -40 to 125 | 8-SOIC |
| ADA4091-2ARZ | Analog Devices Inc. | 0.46 | 1.27 | 50 | 45 | 0.2 | 20 | 3 | 30 | -40 to 125 | 8-SOIC |
| ADA4091-2ARZ-R7 | Analog Devices Inc. | 0.46 | 1.27 | 50 | 45 | 0.2 | 20 | 3 | 30 | -40 to 125 | 8-SOIC |
| OP284ESZ | Analog Devices Inc. | 4 | 4.25 | 80 | 100 | — | 10 | 3 | 36 | -40 to 125 | 8-SOIC |
| OP284ESZ-REEL | Analog Devices Inc. | 4 | 4.25 | 80 | 100 | — | 10 | 3 | 36 | -40 to 125 | 8-SOIC |
| OP284ESZ-REEL7 | Analog Devices Inc. | 4 | 4.25 | 80 | 100 | — | 10 | 3 | 36 | -40 to 125 | 8-SOIC |
| OP284FSZ | Analog Devices Inc. | 4 | 4.25 | 80 | 175 | — | 10 | 3 | 36 | -40 to 125 | 8-SOIC |
Engineering Selection Recommendations
Direct Substitution (Identical Electrical Performance):
The LT1630CS8#PBF is a direct substitute for the LT1630CS8. Both parts are manufactured by Analog Devices Inc., share identical electrical specifications, and are housed in the 8-SOIC package. The primary difference is packaging format: LT1630CS8#PBF is supplied in tube packaging, while LT1630CS8 is supplied in standard packaging. Both parts maintain ROHS3 compliance, unlimited moisture sensitivity rating, and active product status. This substitution introduces no electrical or mechanical compatibility concerns.
Functional Substitution (Reduced Performance Parameters):
The ADA4084-2ARZ, ADA4084-2ARZ-R7, and ADA4084-2ARZ-RL variants are functional substitutes with reduced performance specifications. These parts exhibit lower slew rate (4.6 V/µs versus 10 V/µs), lower gain bandwidth product (15.9 MHz versus 30 MHz), lower input bias current (140 nA versus 550 nA), and lower output current capability (30 mA versus 70 mA). The maximum supply voltage is reduced to 30 V (versus 36 V). These parts are suitable for applications where the LT1630CS8 performance exceeds requirements. All three ADA4084 variants are ROHS3 compliant with active product status.
The OP284ESZ, OP284ESZ-REEL, OP284ESZ-REEL7, and OP284FSZ variants are functional substitutes with significantly reduced performance specifications. These parts exhibit lower slew rate (4 V/µs), lower gain bandwidth product (4.25 MHz), lower input bias current (80 nA), and lower output current capability (10 mA). These parts are suitable only for low-frequency or low-speed applications. All OP284 variants are ROHS3 compliant with active product status and support the full 36 V maximum supply voltage.
The ADA4091-2ARZ and ADA4091-2ARZ-R7 variants are functional substitutes with significantly reduced performance specifications. These parts exhibit substantially lower slew rate (0.46 V/µs), substantially lower gain bandwidth product (1.27 MHz), and substantially lower output current capability (20 mA). These parts are suitable only for ultra-low-frequency applications. Both ADA4091 variants are ROHS3 compliant with active product status.
Packaging Format Variants:
The ADA4084-2ARZ-R7, ADA4084-2ARZ-RL, ADA4091-2ARZ-R7, OP284ESZ-REEL, and OP284ESZ-REEL7 are supplied in Cut Tape (CT) and Digi-Reel packaging formats, while their counterparts (ADA4084-2ARZ, ADA4091-2ARZ, OP284ESZ, OP284FSZ) are supplied in tube packaging. Packaging format selection depends on assembly process requirements and does not affect electrical performance.
Frequently Asked Questions (FAQ)
Q: Can the LT1630CS8#PBF be used as a direct replacement for the LT1630CS8?
A: Yes. The LT1630CS8#PBF is electrically and mechanically identical to the LT1630CS8. The only difference is the packaging format (tube versus standard). Both parts are ROHS3 compliant, feature unlimited moisture sensitivity, and maintain active product status.
Q: What is the primary difference between the LT1630CS8 and the ADA4084-2ARZ?
A: The LT1630CS8 provides higher performance specifications: slew rate of 10 V/µs (versus 4.6 V/µs), gain bandwidth product of 30 MHz (versus 15.9 MHz), input bias current of 550 nA (versus 140 nA), and output current of 70 mA per channel (versus 30 mA). The ADA4084-2ARZ operates at a lower supply voltage maximum of 30 V (versus 36 V) and supports an extended operating temperature range to 125°C (versus 85°C).
Q: Can the OP284ESZ replace the LT1630CS8 in all applications?
A: No. The OP284ESZ exhibits significantly reduced performance: slew rate of 4 V/µs (versus 10 V/µs), gain bandwidth product of 4.25 MHz (versus 30 MHz), and output current of 10 mA per channel (versus 70 mA). The OP284ESZ is suitable only for low-frequency applications where these reduced specifications are acceptable.
Q: What is the difference between OP284ESZ and OP284FSZ?
A: The OP284ESZ and OP284FSZ are electrically identical except for input offset voltage: OP284ESZ specifies 100 µV maximum, while OP284FSZ specifies 175 µV maximum. Both parts share identical slew rate, gain bandwidth product, input bias current, output current, and supply voltage specifications.
Q: Are all substitute parts ROHS3 compliant?
A: Yes. All substitute parts listed are ROHS3 compliant and maintain unlimited moisture sensitivity rating (MSL 1). All parts are manufactured by Analog Devices Inc. and hold active product status.
Q: What is the significance of the -R7 and -RL suffixes in part numbers?
A: The -R7 suffix indicates Cut Tape (CT) and Digi-Reel packaging format with 7-inch reel diameter. The -RL suffix indicates Cut Tape (CT) and Digi-Reel packaging format with standard reel diameter. These suffixes denote packaging and delivery format only and do not affect electrical performance.
Q: Can the ADA4091-2ARZ be used in high-frequency applications?
A: No. The ADA4091-2ARZ features a gain bandwidth product of only 1.27 MHz and slew rate of 0.46 V/µs, making it unsuitable for high-frequency applications. This part is designed for ultra-low-frequency signal processing where minimal power consumption is prioritized.
Q: What is the minimum supply voltage for the LT1630CS8?
A: The LT1630CS8 operates with a minimum supply voltage of 2.7 V. Some substitute parts (ADA4084, ADA4091, OP284) require a minimum supply voltage of 3 V. Verify supply voltage compatibility before substitution.
Q: Are there inventory differences between substitute parts?
A: Yes. Inventory levels vary significantly across substitute parts. The LT1630CS8 has 3,658 units in stock, while OP284ESZ-REEL has 100,300 units and ADA4084-2ARZ-RL has 50,100 units. Inventory availability may influence substitution decisions based on procurement requirements.
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