ADG528ATCHIPS Equivalent & Substitute Parts

Part Overview

The ADG528ATCHIPS is an 8:1 multiplexer/demultiplexer IC switch manufactured by Analog Devices Inc. in die form with 450Ohm on-state resistance. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and production continuity. The part operates across a wide supply voltage range and is suitable for analog signal routing applications requiring low on-state resistance and minimal crosstalk.

Key Parameters

Parameter	Value
Multiplexer/Demultiplexer Circuit	8:1
Number of Circuits	1
On-State Resistance (Max)	450Ohm
Channel-to-Channel Matching (ΔRon)	22.5Ohm
Voltage - Supply, Single (V+)	10.8V ~ 16.5V
Voltage - Supply, Dual (V±)	±10.8V ~ 16.5V
Switch Time (Ton, Toff) (Max)	300ns, 300ns
Charge Injection	4pC
Channel Capacitance (CS(off), CD(off))	5pF, 22pF
Current - Leakage (IS(off)) (Max)	1nA
Operating Temperature	-55°C ~ 125°C (TA)
Mounting Type	Surface Mount
Package / Case	Die
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution for the ADG528ATCHIPS is determined by the following core electrical and mechanical criteria:

Functional Equivalence: All substitute parts maintain the 8:1 multiplexer/demultiplexer configuration with a single circuit, ensuring identical channel architecture.

On-State Resistance Compatibility: The ADG528ATCHIPS operates at 450Ohm maximum on-state resistance. Substitute parts with lower on-state resistance (ADG1208YRZ at 200Ohm and ADG5208FBRUZ at 160Ohm) are electrically compatible and provide improved performance characteristics.

Supply Voltage Range: Substitute parts must support the operating voltage requirements. The ADG1208YRZ supports 5V ~ 16.5V (single) and ±5V ~ 16.5V (dual), which encompasses the original 10.8V ~ 16.5V range. The ADG5208FBRUZ supports 9V ~ 40V (single) and ±9V ~ 22V (dual), also compatible with the original specification.

Operating Temperature: Both substitute parts operate across -40°C ~ 125°C, which covers the original -55°C ~ 125°C range at the upper end. The ADG528ATCHIPS provides extended low-temperature operation to -55°C.

Package Transition: The ADG528ATCHIPS is supplied as a die. Substitute parts are available in standard surface-mount packages (16-SOIC and 16-TSSOP), enabling integration into conventional PCB designs.

Parameter Comparison

Parameter	ADG528ATCHIPS	ADG1208YRZ	ADG5208FBRUZ
Multiplexer/Demultiplexer Circuit	8:1	8:1	8:1
Number of Circuits	1	1	1
On-State Resistance (Max)	450Ohm	200Ohm	160Ohm
Channel-to-Channel Matching (ΔRon)	22.5Ohm	4.6Ohm	4.6Ohm
Voltage - Supply, Single (V+)	10.8V ~ 16.5V	5V ~ 16.5V	9V ~ 40V
Voltage - Supply, Dual (V±)	±10.8V ~ 16.5V	±5V ~ 16.5V	±9V ~ 22V
Switch Time (Ton, Toff) (Max)	300ns, 300ns	95ns, 100ns	170ns, 140ns
Charge Injection	4pC	0.4pC	0.3pC
Channel Capacitance (CS(off), CD(off))	5pF, 22pF	1.5pF, 7pF	2.8pF, 33pF
Current - Leakage (IS(off)) (Max)	1nA	100pA	100pA
Operating Temperature	-55°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Package / Case	Die	16-SOIC	16-TSSOP
Product Status	Obsolete	Active	Active

Engineering Selection Recommendations

ADG1208YRZ is recommended for applications requiring the lowest on-state resistance (200Ohm) and fastest switching performance (95ns turn-on, 100ns turn-off). This part is active and ROHS3 compliant, ensuring long-term availability and environmental compliance. The 16-SOIC package is widely supported in standard PCB assembly processes. This substitute is suitable when improved signal integrity and reduced insertion loss are design priorities.

ADG5208FBRUZ is recommended for applications requiring extended supply voltage range (9V ~ 40V single supply) and higher voltage dual-supply operation (±9V ~ 22V). This part is active and ROHS3 compliant. The 16-TSSOP package provides a compact footprint suitable for space-constrained designs. This substitute is appropriate when supply voltage flexibility and reduced board space are critical factors.

Both substitute parts provide superior electrical performance compared to the obsolete ADG528ATCHIPS, including lower on-state resistance, reduced charge injection, improved channel-to-channel matching, and lower leakage current. Selection between ADG1208YRZ and ADG5208FBRUZ depends on specific supply voltage requirements and package space constraints.

Frequently Asked Questions (FAQ)

Q: Can ADG1208YRZ or ADG5208FBRUZ directly replace ADG528ATCHIPS in existing designs?

A: Both parts maintain the 8:1 multiplexer/demultiplexer configuration and are electrically compatible within their respective supply voltage ranges. However, the ADG528ATCHIPS is supplied as a die, while substitutes are packaged in 16-SOIC and 16-TSSOP formats. PCB layout and assembly process modifications are required.

Q: What is the impact of lower on-state resistance in the substitute parts?

A: Lower on-state resistance (200Ohm for ADG1208YRZ and 160Ohm for ADG5208FBRUZ compared to 450Ohm for ADG528ATCHIPS) reduces signal insertion loss and improves signal fidelity in analog routing applications. This represents an improvement over the original specification.

Q: Are there temperature range limitations when substituting?

A: The ADG528ATCHIPS operates to -55°C, while both substitute parts operate to -40°C minimum. Applications requiring operation below -40°C cannot use these substitutes. For standard industrial temperature ranges (-40°C to 125°C), both substitutes are fully compatible.

Q: How do the package differences affect circuit design?

A: The ADG528ATCHIPS die format requires hybrid integration or direct die attachment. ADG1208YRZ (16-SOIC) and ADG5208FBRUZ (16-TSSOP) are standard surface-mount packages compatible with conventional PCB assembly, reducing design complexity and manufacturing cost.

Q: Which substitute is better for high-frequency applications?

A: ADG1208YRZ offers superior high-frequency performance with -3dB bandwidth of 550MHz, faster switching times (95ns/100ns), and lower charge injection (0.4pC). ADG5208FBRUZ provides -3dB bandwidth of 60MHz, suitable for lower-frequency applications but offering extended supply voltage range.

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