DG201ACSE Equivalent & Substitute Parts

Part Overview

The DG201ACSE is a 4-circuit SPST-NC (Single Pole Single Throw - Normally Closed) analog switch IC manufactured by Analog Devices Inc./Maxim Integrated in 16-SOIC surface mount packaging. This component features 200Ohm on-state resistance and operates across a dual supply voltage range of ±4.5V to ±18V, making it suitable for precision signal switching applications in audio, instrumentation, and data acquisition systems.

The DG201ACSE is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and access components with improved performance characteristics or enhanced compliance certifications such as RoHS3.

Key Parameters

Parameter	DG201ACSE
Switch Circuit Type	SPST - NC
Number of Circuits	4
Multiplexer/Demultiplexer Circuit	1:1
On-State Resistance (Max)	200Ohm
Voltage - Supply, Dual (V±)	±4.5V ~ 18V
Switch Time - Ton (Max)	600ns
Switch Time - Toff (Max)	450ns
Charge Injection	20pC
Channel Capacitance - CS(off)	5pF
Channel Capacitance - CD(off)	5pF
Current - Leakage (IS(off)) Max	5nA
Crosstalk	-90dB @ 100kHz
Operating Temperature	0°C ~ 70°C
Package / Case	16-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Product Status	Obsolete
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitution of the DG201ACSE is determined by the following critical parameters:

Mandatory Compatibility Criteria:

Switch circuit type: SPST - NC
Number of circuits: 4
Multiplexer/Demultiplexer circuit: 1:1
Package / Case: 16-SOIC (0.154", 3.90mm Width)
Mounting type: Surface Mount

Performance Tolerance Parameters:

On-state resistance must not exceed application requirements
Dual supply voltage range must encompass or exceed ±4.5V ~ 18V
Switch timing (Ton, Toff) must meet or exceed speed requirements
Leakage current and crosstalk specifications must satisfy signal integrity needs
Operating temperature range must cover 0°C ~ 70°C minimum

Substitute parts are grouped into three categories based on on-state resistance performance: 200Ohm equivalents, 85-90Ohm improved performance variants, and 50Ohm high-performance variants. Each category maintains identical switch topology and packaging while offering different electrical characteristics suited to specific application requirements.

Parameter Comparison

Parameter	DG201ACSE	DG201ACSE+	ADG201AKRZ	ADG201HSKRZ	DG201BDY-E3	DG201HSDY-E3
Manufacturer	Analog Devices / Maxim	Analog Devices / Maxim	Analog Devices	Analog Devices	Vishay Siliconix	Vishay Siliconix
Switch Circuit	SPST - NC	SPST - NC	SPST - NC	SPST - NC	SPST - NC	SPST - NC
Number of Circuits	4	4	4	4	4	4
On-State Resistance (Max)	200Ohm	200Ohm	90Ohm	50Ohm	85Ohm	50Ohm
Voltage - Supply, Dual (V±)	±4.5V ~ 18V	±4.5V ~ 18V	±10V ~ 15V	±14.6V ~ 16.5V	±4.5V ~ 22V	±7V ~ 22V
Switch Time - Ton (Max)	600ns	600ns	300ns	50ns	300ns	60ns
Switch Time - Toff (Max)	450ns	450ns	250ns	50ns	200ns	50ns
Charge Injection	20pC	20pC	20pC	10pC	1pC	-5pC
Current - Leakage (IS(off)) Max	5nA	5nA	2nA	1nA	500pA	1nA
Crosstalk	-90dB @ 100kHz	-90dB @ 100kHz	-80dB @ 100kHz	-86dB @ 100kHz	-95dB @ 100kHz	-100dB @ 100kHz
Operating Temperature	0°C ~ 70°C	0°C ~ 70°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Package / Case	16-SOIC	16-SOIC	16-SOIC	16-SOIC	16-SOIC	16-SOIC
Product Status	Obsolete	Active	Active	Active	Active	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Direct Replacement (200Ohm On-State Resistance):

DG201ACSE+ is the direct functional equivalent with identical electrical specifications. It maintains 200Ohm on-state resistance and ±4.5V ~ 18V dual supply voltage range. The primary advantage is active product status and ROHS3 compliance, eliminating obsolescence risk and meeting modern environmental regulations. This part is recommended for designs where the 200Ohm resistance specification is critical and supply voltage range must remain ±4.5V ~ 18V.

Improved Performance Variants (85-90Ohm On-State Resistance):

ADG201AKRZ and DG201BDY-E3 reduce on-state resistance to 90Ohm and 85Ohm respectively, improving signal integrity and reducing power dissipation. Both support extended operating temperature ranges (-40°C ~ 85°C) and ROHS3 compliance. ADG201AKRZ operates within ±10V ~ 15V supply range, while DG201BDY-E3 supports broader ±4.5V ~ 22V range. These variants are suitable when lower on-state resistance is acceptable and supply voltage specifications align with application requirements.

High-Performance Variants (50Ohm On-State Resistance):

ADG201HSKRZ and DG201HSDY-E3 deliver 50Ohm on-state resistance with significantly faster switching times (50ns) and lower charge injection. ADG201HSKRZ requires ±10.8V ~ 16.5V supply, while DG201HSDY-E3 operates across ±7V ~ 22V. Both achieve ROHS3 compliance and extended temperature operation. These parts are specified for applications demanding minimal signal distortion, fast switching response, and low leakage current.

Packaging Considerations:

Tube packaging (standard) is suitable for lower-volume applications. Tape & Reel (TR) and Cut Tape (CT) & Digi-Reel® packaging options are available for high-volume production. Selection depends on assembly process requirements and inventory management practices.

Frequently Asked Questions (FAQ)

Q: Can DG201ACSE+ be used as a direct drop-in replacement for DG201ACSE?

A: Yes. DG201ACSE+ maintains identical electrical specifications including 200Ohm on-state resistance, ±4.5V ~ 18V dual supply voltage, and 16-SOIC packaging. The primary differences are active product status and ROHS3 compliance. No circuit modifications are required.

Q: What is the key difference between 200Ohm, 85-90Ohm, and 50Ohm variants?

A: On-state resistance directly affects signal attenuation, power dissipation, and switching speed. Lower resistance variants (85-90Ohm and 50Ohm) provide improved signal integrity and faster switching response but may require verification that supply voltage ranges align with application requirements. Selection depends on whether the application can tolerate lower on-state resistance and whether supply voltage specifications are compatible.

Q: Are all substitute parts pin-compatible with DG201ACSE?

A: Yes. All substitute parts maintain 16-SOIC (0.154", 3.90mm Width) surface mount packaging with identical pinout. No PCB layout modifications are necessary.

Q: Which substitute part offers the best overall performance?

A: DG201HSDY-E3 provides the lowest on-state resistance (50Ohm), fastest switching times (60ns/50ns), lowest charge injection (-5pC), and best crosstalk performance (-100dB @ 100kHz). It also supports the widest dual supply voltage range (±7V ~ 22V). Selection should be based on specific application requirements rather than performance alone.

Q: What is the significance of RoHS3 compliance?

A: ROHS3 compliance indicates the part meets current environmental regulations restricting hazardous substances. DG201ACSE is RoHS non-compliant, while all active substitute parts are ROHS3 compliant. This is critical for applications subject to environmental regulations or customer requirements mandating RoHS compliance.

Q: Can I use ADG201AKRZ if my circuit operates at ±4.5V supply voltage?

A: No. ADG201AKRZ requires minimum ±10V supply voltage. DG201BDY-E3 or DG201ACSE+ must be used for applications operating at ±4.5V. Verify supply voltage specifications before part selection.

Q: What packaging options are available for high-volume production?

A: Tape & Reel (TR) and Cut Tape (CT) & Digi-Reel® packaging options are available for most substitute parts. These formats are optimized for automated assembly processes. Tube packaging is standard for lower-volume or manual assembly applications.

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