Part A
ADG701BRMZ
아날로그 디바이스(주)
- Lifecycle
- Active
- Stock
- 6292 PCS
- Package
- MSOP-8
- Series
- 인터페이스 - 아날로그 스위치, 멀티플렉서, 리플렉서
Replacement verdict
Compatible functional replacement candidate
The ADG701BRMZ and ADG702BRM are functionally compatible CMOS analog switches sharing the same SPDT configuration, MSOP-8 package, and supply range, with the ADG702BRM offering a normally closed contact versus the normally open contact of the ADG701BRMZ. Designers should confirm the required switch state and verify the lower on-resistance and faster switching specifications of the ADG702BRM against their circuit requirements before substituting.
Switch Configuration
High match
Package Type
High match
Supply Voltage Range
High match
On-Resistance
Validation required
Parts at a glance
Part B
ADG702BRM
아날로그 디바이스(주)
- Lifecycle
- Active
- Stock
- 6529 PCS
- Package
- TSSOP-8
- Series
- 인터페이스 - 아날로그 스위치, 멀티플렉서, 리플렉서
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | ADG701BRMZ | ADG702BRM | Why it matters |
|---|---|---|---|
| Switch Configuration | SPST - Normally Open (NO) | SPST - Normally Closed (NC) | Determines the default conduction state of the switch when the control input is logic low, which is critical for fail-safe and power-up behavior in a circuit. |
| Number of Channels | 1 | 1 | Defines how many independent signals the device can route; both are single-channel, so board space and channel count are equivalent. |
| On-Resistance (RON) | 3 Ω (typ) at 5 V | 3 Ω (typ) at 5 V | Low on-resistance minimizes signal attenuation and voltage drop across the switch, directly affecting signal integrity and power loss. |
| Supply Voltage Range | 1.8 V to 5.5 V single supply | 1.8 V to 5.5 V single supply | Determines compatibility with the system's logic and analog rails; identical ranges mean both fit the same power architecture. |
| Control Logic Threshold | CMOS/TTL compatible (1.8 V logic) | CMOS/TTL compatible (1.8 V logic) | Ensures the switch can be driven directly by low-voltage digital logic without level shifting, simplifying the interface. |
| Package | 8-Lead MSOP | 8-Lead MSOP | Footprint and pinout compatibility allow drop-in substitution on an existing PCB layout without redesign. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Confirms both parts meet the same environmental operating envelope for industrial and commercial applications. |
| Switching Time (tON/tOFF) | ~12 ns / ~8 ns (typ) at 5 V | ~12 ns / ~8 ns (typ) at 5 V | Fast switching enables high-speed signal routing; matching timing means equivalent dynamic performance in the target circuit. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADG701BRMZ | ADG702BRM |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| Switch Circuit | SPST - NO | SPST - NC |
| Multiplexer / Demultiplexer Circuit | 1:1 | 1:1 |
| Number of Circuits | 1 | 1 |
| On - State Resistance(Max) | 3Ohm | 3Ohm |
| Voltage - Supply, Single (V+) | 1.8V ~ 5V | 1.8V ~ 5V |
| Switch Time(Ton Toff)(Max) | 12ns, 8ns (Typ) | 12ns, 8ns (Typ) |
| -3 dB Bandwidth | 200MHz | 200MHz |
| Charge Injection | 5pC | 5pC |
| Channel Capacitance(CS(off)CD(off)) | 17pF, 17pF | 17pF, 17pF |
| Current - Leakage(IS(off))(Max) | 10pA (Typ) | 10pA (Typ) |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What are the key differences between the ADG701BRMZ and the ADG702BRM?
The ADG701BRMZ and ADG702BRM are both single-pole single-throw (SPST) CMOS analog switches from Analog Devices. The primary difference is the switch logic: the ADG701 is a normally open (NO) switch that closes when a logic high is applied to the control input, while the ADG702 is a normally closed (NC) switch that opens when a logic high is applied. Both are specified for single-supply operation from 1.8 V to 5.5 V and are offered in an 8-lead MSOP package.
Are the ADG701BRMZ and ADG702BRM pin-compatible?
Yes. Both devices are supplied in the same 8-lead MSOP (RM) package and share an identical pinout, with the only functional distinction being the normally open versus normally closed switch configuration. This allows a board designed for one variant to accept the other, provided the control logic polarity is accounted for in the design.
What is the on-resistance of the ADG701BRMZ and ADG702BRM?
Per the Analog Devices datasheet, both the ADG701 and ADG702 exhibit a typical on-resistance of approximately 2.5 Ω at a 5 V single supply and around 3 Ω at a 3 V supply, with the on-resistance specified as flat over the analog signal range. Exact maximum limits should be confirmed against the current manufacturer datasheet for the specific grade.
What supply voltage range do the ADG701BRMZ and ADG702BRM support?
Both devices operate from a single supply of 1.8 V to 5.5 V, making them suitable for low-voltage portable and battery-powered systems. They are also specified for dual-supply operation of ±2.5 V where applicable, per the manufacturer datasheet.
What are the switching times of the ADG701BRMZ and ADG702BRM?
The ADG701 and ADG702 feature fast switching, with typical turn-on and turn-off times in the range of a few nanoseconds to tens of nanoseconds depending on supply voltage, as specified in the Analog Devices datasheet. Designers should consult the datasheet timing tables for the exact tON and tOFF values at their operating supply.
Can the ADG701BRMZ and ADG702BRM be used in audio or signal routing applications?
Yes. Both are general-purpose analog switches with low on-resistance and low leakage, suitable for signal routing, audio switching, and sample-and-hold circuits within their specified voltage and current limits. Their low charge injection and fast switching make them appropriate for precision analog signal paths when operated within datasheet conditions.
What is the difference in control logic between the ADG701BRMZ and ADG702BRM?
The ADG701BRMZ is a normally open switch: it is off (high impedance) when the control input is logic low and turns on when logic high is applied. The ADG702BRM is a normally closed switch: it is on when the control input is logic low and turns off when logic high is applied. This logic inversion is the defining selection criterion between the two parts.
Are the ADG701BRMZ and ADG702BRM RoHS compliant?
The "Z" suffix in ADG701BRMZ denotes a lead-free, RoHS-compliant package per Analog Devices nomenclature. The ADG702BRM is the non-Z ordering variant; designers should verify the RoHS status of the specific orderable part number against the manufacturer's product page or datasheet before finalizing a bill of materials.