LT1361CS8 Equivalent & Substitute Parts

Part Overview

The LT1361CS8 is an active voltage feedback amplifier integrated circuit manufactured by Analog Devices Inc., containing two independent circuits in an 8-SOIC surface mount package. This device is classified as a linear amplifier and maintains Active product status. The LT1361CS8 is designed for applications requiring dual-channel voltage feedback amplification with moderate bandwidth and slew rate characteristics. Substitute parts are identified when inventory constraints, packaging preferences, or specific application requirements necessitate alternative component selection while maintaining functional compatibility within defined electrical and mechanical parameters.

Key Parameters

Parameter	Value	Unit
Amplifier Type	Voltage Feedback	—
Number of Circuits	2	—
Slew Rate	800	V/µs
Gain Bandwidth Product	50	MHz
Current - Input Bias	300	nA
Voltage - Input Offset	300	µV
Current - Supply (x2 Channels)	4	mA
Current - Output / Channel	34	mA
Voltage - Supply Span (Min)	5	V
Voltage - Supply Span (Max)	30	V
Operating Temperature Range	-40 to 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

Substitute parts for the LT1361CS8 are classified into two categories based on electrical and mechanical compatibility:

Direct Substitute (Packaging Variant): LT1361CS8#PBF is an identical electrical equivalent with the same base product number (LT1361) and all electrical specifications. The distinction is packaging format only, supplied in Tube rather than the standard format.

Similar Substitutes (Functional Equivalents): ADA4898-2YRDZ, ADA4898-2YRDZ-R7, and OPA2277MDTEP are voltage feedback amplifiers with two circuits in 8-SOIC packages. These parts share the core functional category and package form factor but exhibit variations in the following key parameters:

Slew Rate (55 V/µs for ADA4898 series; 0.8 V/µs for OPA2277MDTEP)
Input Bias Current (100 nA for ADA4898 series; 500 pA for OPA2277MDTEP)
Input Offset Voltage (20 µV for ADA4898 series and OPA2277MDTEP)
Supply Current (7.9 mA for ADA4898 series; 790 µA for OPA2277MDTEP)
Voltage Supply Span (9–33 V for ADA4898 series; 4–36 V for OPA2277MDTEP)
Operating Temperature Range (-40 to 105°C for ADA4898 series; -55 to 125°C for OPA2277MDTEP)
Moisture Sensitivity Level (MSL 3 for ADA4898 series and OPA2277MDTEP)

Substitution is valid when the application requirements fall within the intersection of electrical specifications for both the primary part and the substitute part.

Parameter Comparison

Parameter	LT1361CS8	LT1361CS8#PBF	ADA4898-2YRDZ	ADA4898-2YRDZ-R7	OPA2277MDTEP
Manufacturer	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.	Texas Instruments
Amplifier Type	Voltage Feedback	Voltage Feedback	Voltage Feedback	Voltage Feedback	General Purpose
Number of Circuits	2	2	2	2	2
Slew Rate (V/µs)	800	800	55	55	0.8
Gain Bandwidth Product (MHz)	50	50	50	50	1
Current - Input Bias (nA)	300	300	100	100	0.5
Voltage - Input Offset (µV)	300	300	20	20	20
Current - Supply (mA, x2 Channels)	4	4	7.9	7.9	0.79
Current - Output / Channel (mA)	34	34	40	40	35
Voltage - Supply Span Min (V)	5	5	9	9	4
Voltage - Supply Span Max (V)	30	30	33	33	36
Operating Temperature Range (°C)	-40 to 85	-40 to 85	-40 to 105	-40 to 105	-55 to 125
Package / Case	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width) Exposed Pad	8-SOIC (0.154", 3.90mm Width) Exposed Pad	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	3 (168 Hours)	3 (168 Hours)	3 (168 Hours)
Product Status	Active	Active	Active	Active	Active

Engineering Selection Recommendations

LT1361CS8#PBF: This part is a direct electrical equivalent to the LT1361CS8, differing only in packaging format (Tube versus standard). Selection of this variant is appropriate when tube packaging is required for automated assembly processes or when inventory sourcing from alternative suppliers is necessary. All electrical specifications, compliance certifications (ROHS3, REACH Unaffected), and operating characteristics are identical. Moisture sensitivity level remains MSL 1 (Unlimited).

ADA4898-2YRDZ and ADA4898-2YRDZ-R7: These parts are functionally equivalent voltage feedback amplifiers with identical gain bandwidth product (50 MHz) but reduced slew rate (55 V/µs versus 800 V/µs). Input offset voltage is superior (20 µV versus 300 µV), and input bias current is lower (100 nA versus 300 nA). Supply current is higher (7.9 mA versus 4 mA). The minimum supply voltage requirement is higher (9 V versus 5 V). Operating temperature range extends to 105°C. These parts are suitable for applications where lower input offset voltage and bias current are beneficial and where the reduced slew rate does not constrain circuit performance. Moisture sensitivity level is MSL 3 (168 Hours). The ADA4898-2YRDZ-R7 variant is supplied in Cut Tape (CT) & Digi-Reel® packaging, while ADA4898-2YRDZ is supplied in Tube.

OPA2277MDTEP: This Texas Instruments part is a general-purpose amplifier with significantly lower slew rate (0.8 V/µs) and gain bandwidth product (1 MHz) compared to the LT1361CS8. Input bias current is substantially lower (500 pA). Supply current is minimal (790 µA). Operating temperature range extends to 125°C, and supply voltage range is broader (4–36 V). This part is suitable for low-speed, low-power applications where the reduced bandwidth and slew rate are acceptable. Moisture sensitivity level is MSL 3 (168 Hours).

All substitute parts maintain ROHS3 compliance and REACH Unaffected status, consistent with the primary part.

Frequently Asked Questions (FAQ)

Q: Can LT1361CS8#PBF be used as a direct replacement for LT1361CS8?

A: Yes. LT1361CS8#PBF is electrically identical to LT1361CS8. The only difference is packaging format (Tube versus standard). All electrical specifications, operating characteristics, and compliance certifications are identical. Substitution is valid for any application using the LT1361CS8.

Q: What are the key differences between LT1361CS8 and ADA4898-2YRDZ?

A: Both are dual-channel voltage feedback amplifiers with 50 MHz gain bandwidth product in 8-SOIC packages. The ADA4898-2YRDZ has lower slew rate (55 V/µs versus 800 V/µs), lower input offset voltage (20 µV versus 300 µV), lower input bias current (100 nA versus 300 nA), higher supply current (7.9 mA versus 4 mA), higher minimum supply voltage (9 V versus 5 V), and extended operating temperature range (-40 to 105°C versus -40 to 85°C). The ADA4898-2YRDZ package includes an exposed pad for improved thermal performance.

Q: Is OPA2277MDTEP suitable for high-speed applications?

A: No. The OPA2277MDTEP has a gain bandwidth product of 1 MHz and slew rate of 0.8 V/µs, making it unsuitable for high-speed applications. It is designed for low-speed, low-power general-purpose amplification. Applications requiring the 50 MHz bandwidth and 800 V/µs slew rate of the LT1361CS8 should not use the OPA2277MDTEP.

Q: What is the significance of the exposed pad in ADA4898-2YRDZ?

A: The exposed pad (EP) in the 8-SOIC-EP package provides a thermal connection to the substrate, improving heat dissipation compared to standard 8-SOIC packages without exposed pads. This is beneficial in applications with elevated power dissipation or thermal constraints.

Q: Can I use ADA4898-2YRDZ in a circuit designed for 5 V supply voltage?

A: No. The ADA4898-2YRDZ requires a minimum supply voltage of 9 V, whereas the LT1361CS8 operates at 5 V minimum. Circuits designed for 5 V operation are not compatible with the ADA4898-2YRDZ without redesign.

Q: What is the difference between ADA4898-2YRDZ and ADA4898-2YRDZ-R7?

A: Both parts are electrically identical. The difference is packaging format: ADA4898-2YRDZ is supplied in Tube, while ADA4898-2YRDZ-R7 is supplied in Cut Tape (CT) & Digi-Reel®. Selection depends on assembly process requirements and inventory management preferences.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed (LT1361CS8#PBF, ADA4898-2YRDZ, ADA4898-2YRDZ-R7, and OPA2277MDTEP) are ROHS3 Compliant and REACH Unaffected, consistent with the primary LT1361CS8 part.

Q: What does Moisture Sensitivity Level (MSL) 1 versus MSL 3 mean for component handling?

A: MSL 1 (Unlimited) indicates the component has unlimited shelf life and no moisture sensitivity restrictions. MSL 3 (168 Hours) indicates the component must be used within 168 hours of opening the moisture barrier bag after reflow soldering. Components with MSL 3 require more stringent moisture control during storage and assembly. The LT1361CS8 and LT1361CS8#PBF have MSL 1, while ADA4898 and OPA2277MDTEP variants have MSL 3.

Q: Which substitute part has the lowest power consumption?

A: The OPA2277MDTEP has the lowest supply current at 790 µA (x2 Channels), compared to 4 mA for LT1361CS8 and 7.9 mA for ADA4898 variants. However, the OPA2277MDTEP is not suitable for high-bandwidth applications due to its 1 MHz gain bandwidth product.

Q: Can I substitute OPA2277MDTEP for LT1361CS8 in an existing design?

A: Substitution is valid only if the application does not require the 50 MHz bandwidth and 800 V/µs slew rate of the LT1361CS8. The OPA2277MDTEP is designed for low-speed applications with 1 MHz bandwidth. Circuit redesign and performance verification are necessary if substitution is considered.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message