DG202BDJ Equivalent & Substitute Parts

Part Overview

The DG202BDJ is a 4-circuit SPST-NO analog switch IC manufactured by Vishay Siliconix, housed in a 16-DIP package with 85Ohm on-state resistance. This component is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production support. The DG202BDJ operates across a wide supply voltage range (4.5V to 25V single supply, ±4.5V to ±22V dual supply) and features low charge injection and excellent crosstalk performance, making it suitable for precision analog switching applications.

Key Parameters

Parameter	DG202BDJ Value
Switch Circuit Type	SPST - NO (Single Pole Single Throw - Normally Open)
Number of Circuits	4
On-State Resistance (Max)	85Ohm
Channel-to-Channel Matching (ΔRon)	2Ohm
Voltage - Supply, Single (V+)	4.5V ~ 25V
Voltage - Supply, Dual (V±)	±4.5V ~ 22V
Switch Time (Ton, Toff) (Max)	300ns, 200ns
Charge Injection	1pC
Channel Capacitance (CS(off), CD(off))	5pF, 5pF
Current - Leakage (IS(off)) (Max)	500pA
Crosstalk	-95dB @ 100kHz
Operating Temperature	-40°C ~ 85°C (TA)
Package / Case	16-DIP (0.300", 7.62mm)
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitution of the DG202BDJ is determined by the following critical parameters:

Switch topology: SPST-NO configuration with 4 independent circuits
Package compatibility: 16-DIP form factor (0.300", 7.62mm) for direct pin-compatible replacement
On-state resistance range: 85Ohm to 200Ohm acceptable for most applications
Supply voltage compatibility: Overlap between main part and substitute supply ranges
Operating temperature range: Extended temperature operation (-40°C to 85°C) preferred for industrial applications
Charge injection and crosstalk performance: Critical for precision analog signal routing

Substitute parts are grouped into three categories based on on-state resistance characteristics and supply voltage requirements:

Group 1 (Low Resistance, 85-90Ohm): MAX362CPE+ and ADG202AKNZ provide resistance values closest to the original DG202BDJ, suitable for applications requiring minimal signal attenuation.

Group 2 (Medium Resistance, 120-135Ohm): MAX4552CPE+, ALD4202MPCL, and ALD4212PCL offer moderate resistance with improved switching speed and lower charge injection in some cases.

Group 3 (High Resistance, 125-200Ohm): LTC202CN#PBF and DG202CJ+ provide higher resistance values with different supply voltage requirements, suitable for applications with relaxed resistance specifications.

Parameter Comparison

Part Number	Manufacturer	On-State Resistance (Max)	ΔRon (Max)	V+ Range	V± Range	Ton/Toff (Max)	Charge Injection	IS(off) (Max)	Crosstalk	Temp Range	Product Status	RoHS Status
DG202BDJ	Vishay Siliconix	85Ohm	2Ohm	4.5V ~ 25V	±4.5V ~ 22V	300ns, 200ns	1pC	500pA	-95dB @ 100kHz	-40°C ~ 85°C	Obsolete	Non-compliant
ADG202AKNZ	Analog Devices Inc.	90Ohm	4.5Ohm	10V ~ 15V	±10V ~ 15V	300ns, 250ns	20pC	2nA	-80dB @ 100kHz	-40°C ~ 85°C	Active	ROHS3 Compliant
ALD4202MPCL	Advanced Linear Devices Inc.	135Ohm	2.7Ohm	3V ~ 12V	±1.5V ~ 6V	240ns, 130ns	2pC	100pA	-90dB @ 100kHz	0°C ~ 70°C	Active	ROHS3 Compliant
ALD4212PCL	Advanced Linear Devices Inc.	135Ohm	2.7Ohm	3V ~ 12V	±1.5V ~ 6V	130ns, 130ns	0.2pC	100pA	-90dB @ 100kHz	-40°C ~ 85°C	Active	ROHS3 Compliant
DG202CJ+	Analog Devices Inc./Maxim Integrated	200Ohm	—	—	±4.5V ~ 18V	600ns, 450ns	20pC	5nA	-90dB @ 100kHz	0°C ~ 70°C	Active	ROHS3 Compliant
LTC202CN#PBF	Analog Devices Inc.	125Ohm	6.25Ohm	5V	±15V	400ns, 300ns	8pC	5nA	-90dB @ 100kHz	0°C ~ 70°C	Active	ROHS3 Compliant
MAX362CPE+	Analog Devices Inc./Maxim Integrated	85Ohm	2Ohm (Max)	10V ~ 30V	±4.5V ~ 20V	250ns, 120ns	5pC	500pA	-100dB @ 1MHz	0°C ~ 70°C	Active	ROHS3 Compliant
MAX4552CPE+	Analog Devices Inc./Maxim Integrated	120Ohm	1Ohm	2V ~ 12V	±2V ~ 6V	110ns, 90ns	2pC	1nA	-90dB @ 100kHz	0°C ~ 70°C	Obsolete	ROHS3 Compliant

Engineering Selection Recommendations

For RoHS3 Compliance Requirements: All substitute parts except DG202BDJ are ROHS3 compliant. ADG202AKNZ, ALD4202MPCL, ALD4212PCL, DG202CJ+, LTC202CN#PBF, MAX362CPE+, and MAX4552CPE+ meet modern environmental and regulatory standards.

For Extended Temperature Operation (-40°C to 85°C): ADG202AKNZ and ALD4212PCL maintain the full temperature range of the original DG202BDJ. These parts are preferred for industrial and automotive applications requiring wide temperature performance.

For Closest Electrical Match: MAX362CPE+ provides the most direct replacement with identical 85Ohm on-state resistance, 2Ohm channel matching, and 500pA leakage current. This part is active and ROHS3 compliant, making it the primary recommendation for direct substitution in new designs.

For Low-Voltage Applications (±2V to ±6V): MAX4552CPE+ and ALD4202MPCL/ALD4212PCL are suitable for battery-powered and low-voltage systems. Note that MAX4552CPE+ is obsolete; ALD4212PCL is the preferred active alternative with superior charge injection performance (0.2pC).

For Supply Voltage Flexibility: ADG202AKNZ and MAX362CPE+ offer the widest single-supply voltage ranges (10V ~ 30V for MAX362CPE+), accommodating diverse power supply architectures.

For Precision Analog Signal Routing: ALD4212PCL offers the lowest charge injection (0.2pC) and fastest switching times (130ns), critical for high-frequency and precision measurement applications.

Frequently Asked Questions (FAQ)

Q: Can MAX362CPE+ directly replace DG202BDJ in existing designs?

A: MAX362CPE+ is pin-compatible in the 16-DIP package and provides identical on-state resistance (85Ohm) and channel matching (2Ohm). However, verify supply voltage compatibility: MAX362CPE+ requires 10V ~ 30V single supply or ±4.5V ~ 20V dual supply, whereas DG202BDJ supports 4.5V ~ 25V single supply. If your design operates below 10V single supply, MAX362CPE+ is not suitable.

Q: What is the difference between ALD4202MPCL and ALD4212PCL?

A: Both parts share identical on-state resistance (135Ohm), channel matching (2.7Ohm), and leakage current (100pA). The key differences are: ALD4212PCL has faster switching times (130ns vs. 240ns), significantly lower charge injection (0.2pC vs. 2pC), and extended temperature range (-40°C ~ 85°C vs. 0°C ~ 70°C). ALD4212PCL is preferred for precision applications and industrial temperature requirements.

Q: Is DG202CJ+ a suitable replacement for DG202BDJ?

A: DG202CJ+ shares the same base product number (DG202) and SPST-NO topology with 4 circuits in a 16-DIP package. However, it has significantly higher on-state resistance (200Ohm vs. 85Ohm) and slower switching times (600ns/450ns vs. 300ns/200ns). DG202CJ+ is suitable only if your application tolerates higher resistance and slower switching. Operating temperature is limited to 0°C ~ 70°C.

Q: Why do some substitute parts have narrower supply voltage ranges?

A: Different IC designs optimize for specific voltage ranges. ALD4202MPCL and ALD4212PCL are optimized for low-voltage operation (3V ~ 12V single supply, ±1.5V ~ 6V dual supply), making them ideal for battery-powered systems but unsuitable for higher-voltage applications. Verify your design's supply voltage requirements before selection.

Q: Are all substitute parts available in the same 16-DIP package?

A: Yes, all substitute parts listed are housed in 16-DIP (0.300", 7.62mm) packages, ensuring mechanical and pin compatibility with DG202BDJ. All parts use the same supplier device package designation (16-PDIP).

Q: Which substitute part has the best crosstalk performance?

A: MAX362CPE+ provides the best crosstalk performance at -100dB @ 1MHz, compared to DG202BDJ's -95dB @ 100kHz. This superior performance makes MAX362CPE+ suitable for applications requiring minimal signal coupling between channels.

Q: Can I use LTC202CN#PBF as a drop-in replacement?

A: LTC202CN#PBF is not a drop-in replacement due to restricted supply voltage options: 5V single supply and ±15V dual supply only. If your design uses these exact voltages, LTC202CN#PBF is compatible. However, it has higher on-state resistance (125Ohm) and higher charge injection (8pC), which may affect signal integrity in precision applications.

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