LT1369CS#TRPBF Equivalent & Substitute Parts

Part Overview

The LT1369CS#TRPBF is a general purpose operational amplifier integrated circuit manufactured by Analog Devices Inc. This 4-circuit rail-to-rail amplifier is housed in a 14-SOIC surface mount package and is actively produced. The device operates across a wide supply voltage range of 1.8 V to 30 V with an operating temperature range of 0°C to 70°C. Substitute parts are identified when equivalent functional performance is required, packaging format changes are necessary, or inventory availability necessitates alternative sourcing while maintaining circuit compatibility.

Key Parameters

Parameter	Value
Manufacturer Part Number	LT1369CS#TRPBF
Manufacturer	Analog Devices Inc.
Category	Linear, Amplifiers
Amplifier Type	General Purpose
Number of Circuits	4
Output Type	Rail-to-Rail
Package / Case	14-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Voltage - Supply Span (Min)	1.8 V
Voltage - Supply Span (Max)	30 V
Operating Temperature	0°C ~ 70°C
Product Status	Active
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the LT1369CS#TRPBF are identified based on the following critical parameters that determine functional and mechanical compatibility:

Primary Compatibility Criteria:

Number of Circuits: 4 (all substitutes maintain quad-channel configuration)
Output Type: Rail-to-Rail (all substitutes provide rail-to-rail output capability)
Package / Case: 14-SOIC (0.154", 3.90mm Width) (all substitutes use identical physical package)
Mounting Type: Surface Mount (all substitutes are surface mount devices)
Voltage - Supply Span (Max): 30 V (all substitutes support maximum 30 V supply)

Secondary Compatibility Considerations:

Amplifier Type: General Purpose or J-FET variants
Voltage - Supply Span (Min): Range from 1.8 V to 3 V
Operating Temperature: Extended range options available (-40°C to 85°C)
Packaging Format: Tape & Reel (TR), Cut Tape & Digi-Reel (CT), or Tube configurations

The AD824 series substitutes feature J-FET input architecture with enhanced performance characteristics including higher slew rate and gain bandwidth product. The OP747 series substitutes maintain general purpose amplifier topology with improved input offset voltage specifications. All substitute parts are manufactured by Analog Devices Inc. and maintain ROHS3 compliance and REACH unaffected status.

Parameter Comparison

Parameter	LT1369CS#TRPBF	AD824ARZ-14	AD824ARZ-14-3V	AD824ARZ-14-REEL	AD824ARZ-14-REEL7	OP747ARZ	OP747ARZ-REEL7
Manufacturer	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.
Amplifier Type	General Purpose	J-FET	J-FET	J-FET	J-FET	General Purpose	General Purpose
Number of Circuits	4	4	4	4	4	4	4
Output Type	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail
Slew Rate	0.065 V/µs	2 V/µs	2 V/µs	2 V/µs	2 V/µs	0.2 V/µs	0.2 V/µs
Gain Bandwidth Product	160 kHz	2 MHz	2 MHz	2 MHz	2 MHz	700 kHz	700 kHz
Current - Input Bias	10 nA	4 pA	4 pA	4 pA	4 pA	5 nA	5 nA
Voltage - Input Offset	200 µV	500 µV	500 µV	500 µV	500 µV	30 µV	30 µV
Current - Supply	370 µA (x4 Channels)	560 µA (x4 Channels)	560 µA (x4 Channels)	560 µA (x4 Channels)	560 µA (x4 Channels)	320 µA (x4 Channels)	320 µA (x4 Channels)
Current - Output / Channel	75 mA	12 mA	12 mA	12 mA	12 mA	30 mA	30 mA
Voltage - Supply Span (Min)	1.8 V	3 V	3 V	3 V	3 V	2.7 V	2.7 V
Voltage - Supply Span (Max)	30 V	30 V	30 V	30 V	30 V	30 V	30 V
Operating Temperature	0°C ~ 70°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Package / Case	14-SOIC (0.154", 3.90mm Width)	14-SOIC (0.154", 3.90mm Width)	14-SOIC (0.154", 3.90mm Width)	14-SOIC (0.154", 3.90mm Width)	14-SOIC (0.154", 3.90mm Width)	14-SOIC (0.154", 3.90mm Width)	14-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Product Status	Active	Active	Active	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

All identified substitute parts maintain active product status with Analog Devices Inc. and are ROHS3 compliant. Selection between substitute options is determined by specific application requirements and packaging format availability.

AD824 Series (AD824ARZ-14, AD824ARZ-14-3V, AD824ARZ-14-REEL, AD824ARZ-14-REEL7): These J-FET input amplifiers provide superior performance in applications requiring high input impedance and low input bias current (4 pA). The AD824 series delivers significantly higher slew rate (2 V/µs) and gain bandwidth product (2 MHz) compared to the LT1369CS#TRPBF. The minimum supply voltage requirement is 3 V, which is higher than the LT1369CS#TRPBF minimum of 1.8 V. Operating temperature range extends to -40°C to 85°C. Packaging variants include Tube (AD824ARZ-14, AD824ARZ-14-3V) and Cut Tape & Digi-Reel (AD824ARZ-14-REEL, AD824ARZ-14-REEL7) formats.

OP747 Series (OP747ARZ, OP747ARZ-REEL7): These general purpose amplifiers maintain the same amplifier topology as the LT1369CS#TRPBF with improved input offset voltage specification (30 µV versus 200 µV). The OP747 series provides moderate performance enhancement with slew rate of 0.2 V/µs and gain bandwidth product of 700 kHz. Minimum supply voltage is 2.7 V. Operating temperature range extends to -40°C to 85°C. Packaging variants include Tube (OP747ARZ) and Cut Tape & Digi-Reel (OP747ARZ-REEL7) formats.

Packaging Format Considerations: The LT1369CS#TRPBF is supplied in Tape & Reel (TR) format. Substitute parts are available in Tube, Cut Tape & Digi-Reel, and alternative Tape & Reel configurations. Selection of packaging format depends on assembly process requirements and order quantity specifications.

Frequently Asked Questions (FAQ)

Q: Can the AD824ARZ-14 series directly replace the LT1369CS#TRPBF in all applications?

A: The AD824ARZ-14 series shares the same 14-SOIC package and rail-to-rail output configuration. However, the minimum supply voltage requirement is 3 V compared to 1.8 V for the LT1369CS#TRPBF. Applications operating at supply voltages below 3 V require the LT1369CS#TRPBF or OP747 series. The AD824 series exhibits higher slew rate and gain bandwidth product, which may affect circuit behavior in applications with specific frequency response requirements.

Q: What is the difference between AD824ARZ-14-REEL and AD824ARZ-14-REEL7?

A: Both AD824ARZ-14-REEL and AD824ARZ-14-REEL7 are supplied in Cut Tape & Digi-Reel packaging format with identical electrical specifications. The designation difference reflects packaging reel configuration. Both are functionally equivalent for circuit design purposes.

Q: Is the OP747ARZ suitable for low-voltage applications?

A: The OP747ARZ operates with a minimum supply voltage of 2.7 V, which is higher than the LT1369CS#TRPBF minimum of 1.8 V. For applications requiring operation below 2.7 V, the LT1369CS#TRPBF is the appropriate selection.

Q: How do the input bias current specifications affect circuit design?

A: The LT1369CS#TRPBF has input bias current of 10 nA. The AD824 series provides significantly lower input bias current of 4 pA, beneficial for high-impedance input circuits. The OP747 series provides 5 nA input bias current, intermediate between the two. Selection depends on input impedance requirements and circuit sensitivity to bias current effects.

Q: What are the output current limitations for each substitute?

A: The LT1369CS#TRPBF provides 75 mA output current per channel. The AD824 series provides 12 mA per channel, and the OP747 series provides 30 mA per channel. Applications requiring output currents exceeding 12 mA per channel should use the LT1369CS#TRPBF or OP747 series.

Q: Are all substitute parts suitable for extended temperature range applications?

A: The LT1369CS#TRPBF operates from 0°C to 70°C. All identified substitute parts (AD824 and OP747 series) operate from -40°C to 85°C, providing extended temperature range capability. Applications requiring operation below 0°C or above 70°C benefit from substitute part selection.

Q: What packaging format should be selected for high-volume production?

A: For high-volume surface mount assembly, Cut Tape & Digi-Reel formats (AD824ARZ-14-REEL, AD824ARZ-14-REEL7, OP747ARZ-REEL7) are optimized for automated pick-and-place equipment. Tube packaging (AD824ARZ-14, AD824ARZ-14-3V, OP747ARZ) is suitable for lower-volume applications or manual assembly processes.

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