ALD4702ASBL Equivalent & Substitute Parts

Part Overview

The ALD4702ASBL is a CMOS amplifier integrated circuit manufactured by Advanced Linear Devices Inc., configured as a 4-circuit push-pull, rail-to-rail operational amplifier in a 14-SOIC surface mount package. The device is classified as Active product status and is RoHS3 compliant. Substitute parts are identified when the original component becomes unavailable, when inventory constraints require alternative sourcing, or when design flexibility permits selection from equivalent alternatives that meet the same electrical and mechanical specifications.

Key Parameters

Parameter	Value	Unit
Manufacturer Part Number	ALD4702ASBL	—
Manufacturer	Advanced Linear Devices Inc.	—
Category	Linear, Amplifiers	—
Amplifier Type	CMOS	—
Number of Circuits	4	—
Output Type	Push-Pull, Rail-to-Rail	—
Package / Case	14-SOIC (0.154", 3.90mm Width)	—
Mounting Type	Surface Mount	—
Operating Temperature	0°C ~ 70°C	—
Voltage - Supply Span (Min)	4	V
Voltage - Supply Span (Max)	10	V
Slew Rate	2.8	V/µs
Gain Bandwidth Product	1.7	MHz
Current - Input Bias	1	pA
Voltage - Input Offset	1	mV
Current - Supply	4	mA
Current - Output / Channel	8	mA
RoHS Status	ROHS3 Compliant	—
Product Status	Active	—

Substitute Part Grouping Explanation

Substitution of the ALD4702ASBL is determined by the following critical parameters that must be matched or exceeded:

Mandatory Matching Parameters:

Package / Case: 14-SOIC (0.154", 3.90mm Width)
Mounting Type: Surface Mount
Number of Circuits: 4
Output Type: Rail-to-Rail (minimum requirement)
Voltage - Supply Span: Minimum 4V, Maximum 10V (substitute must operate within or exceed this range)
RoHS3 Compliance

Performance Parameters for Substitution:

Amplifier Type: CMOS technology preferred for compatibility with input bias current and offset voltage characteristics
Slew Rate: 2.8V/µs or greater
Gain Bandwidth Product: 1.7 MHz or greater
Current - Input Bias: 1 pA or lower
Voltage - Input Offset: 1 mV or lower
Current - Output / Channel: 8 mA or greater

The substitute parts listed below satisfy these criteria within the 14-SOIC package form factor and maintain electrical compatibility for direct replacement applications.

Parameter Comparison

Parameter	ALD4702ASBL	MAX4383ESD+	MAX4383ESD+T	OPA4703UA	TLV2444AID
Manufacturer	Advanced Linear Devices Inc.	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated	Texas Instruments	Texas Instruments
Amplifier Type	CMOS	Voltage Feedback	Voltage Feedback	CMOS	CMOS
Number of Circuits	4	4	4	4	4
Output Type	Push-Pull, Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail
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)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Operating Temperature	0°C ~ 70°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Voltage - Supply Span (Min)	4 V	4.5 V	4.5 V	4 V	2.7 V
Voltage - Supply Span (Max)	10 V	11 V	11 V	12 V	10 V
Slew Rate	2.8 V/µs	485 V/µs	485 V/µs	0.6 V/µs	1.4 V/µs
Gain Bandwidth Product	1.7 MHz	210 MHz	210 MHz	1 MHz	1.81 MHz
Current - Input Bias	1 pA	8.5 µA	8.5 µA	1 pA	1 pA
Voltage - Input Offset	1 mV	3 mV	3 mV	160 µV	300 µV
Current - Supply	4 mA	7.5 mA (x4 Channels)	7.5 mA (x4 Channels)	160 µA (x4 Channels)	750 µA (x4 Channels)
Current - Output / Channel	8 mA	75 mA	75 mA	10 mA	50 mA
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active	Active	Active

Engineering Selection Recommendations

All substitute parts listed are Active product status devices with RoHS3 compliance, meeting regulatory and environmental requirements equivalent to the ALD4702ASBL.

MAX4383ESD+ and MAX4383ESD+T (Analog Devices Inc./Maxim Integrated): These voltage feedback amplifiers provide superior slew rate (485 V/µs) and bandwidth (210 MHz) performance compared to the ALD4702ASBL. The minimum supply voltage is 4.5V, which is 0.5V higher than the ALD4702ASBL minimum of 4V. Output current per channel is 75 mA, significantly exceeding the 8 mA specification of the original part. Input bias current is 8.5 µA, substantially higher than the 1 pA of the ALD4702ASBL. These devices are suitable for applications requiring higher speed and output drive capability within the 14-SOIC package.

OPA4703UA (Texas Instruments): This CMOS amplifier maintains the same 1 pA input bias current as the ALD4702ASBL and operates across a 4V to 12V supply range. The slew rate of 0.6 V/µs is lower than the ALD4702ASBL specification of 2.8 V/µs. The gain bandwidth product of 1 MHz is below the 1.7 MHz of the original part. Input offset voltage is 160 µV, superior to the 1 mV specification. This device is suitable for low-power, low-speed applications where the reduced performance metrics are acceptable.

TLV2444AID (Texas Instruments): This CMOS amplifier operates across a 2.7V to 10V supply range, providing the lowest minimum supply voltage of all substitutes. The slew rate of 1.4 V/µs and gain bandwidth product of 1.81 MHz both meet or exceed the ALD4702ASBL specifications. Input bias current is 1 pA, matching the original part. Output current per channel is 50 mA, exceeding the 8 mA requirement. This device is suitable for low-voltage applications requiring extended supply range compatibility.

Frequently Asked Questions (FAQ)

Q: Can the MAX4383ESD+ or MAX4383ESD+T be used as direct replacements for the ALD4702ASBL?

A: Both MAX4383 variants are pin-compatible within the 14-SOIC package and provide rail-to-rail output operation. However, the amplifier topology differs (voltage feedback versus CMOS), resulting in higher input bias current (8.5 µA versus 1 pA) and higher input offset voltage (3 mV versus 1 mV). These devices are suitable for applications where the higher performance metrics (slew rate and bandwidth) are beneficial and the increased input bias current is acceptable.

Q: What is the key difference between OPA4703UA and the ALD4702ASBL?

A: Both are CMOS amplifiers in the 14-SOIC package with identical 1 pA input bias current. The OPA4703UA has a lower slew rate (0.6 V/µs versus 2.8 V/µs) and lower gain bandwidth product (1 MHz versus 1.7 MHz). The OPA4703UA is appropriate for applications where speed is not critical and lower power consumption is prioritized.

Q: Is the TLV2444AID compatible with 2.7V supply applications?

A: Yes. The TLV2444AID operates with a minimum supply voltage of 2.7V, lower than the ALD4702ASBL minimum of 4V. This device is suitable for low-voltage system designs. The maximum supply voltage of 10V matches the ALD4702ASBL specification.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed (MAX4383ESD+, MAX4383ESD+T, OPA4703UA, and TLV2444AID) are RoHS3 compliant, matching the environmental compliance status of the ALD4702ASBL.

Q: Do all substitute parts use the same 14-SOIC package?

A: Yes. All substitute parts are packaged in 14-SOIC (0.154", 3.90mm Width) surface mount configuration, providing mechanical and footprint compatibility with the ALD4702ASBL.

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

A: The MAX4383ESD+ and MAX4383ESD+T provide 75 mA per channel output current, the highest among all listed substitutes. The ALD4702ASBL specifies 8 mA per channel.

Q: Can the OPA4703UA be used in high-speed applications?

A: The OPA4703UA has a slew rate of 0.6 V/µs and gain bandwidth product of 1 MHz, both lower than the ALD4702ASBL. This device is not suitable for applications requiring the speed performance of the original part.

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