Overview
The ADG721BRMZ is a CMOS, low-voltage, dual single-pole/single-throw (SPST) switch produced by Analog Devices Inc. This device is part of the ADG721, ADG722, and ADG723 series, which are designed to operate from a single supply voltage ranging from 1.8 V to 5.5 V. This makes them ideal for use in battery-powered instruments and with modern DACs and ADCs. The ADG721BRMZ is packaged in an 8-lead MSOP, making it suitable for space-constrained applications.
Key Specifications
| Parameter | Typical Value | Units |
|---|---|---|
| Supply Voltage (VDD) | 1.8 to 5.5 | V |
| On Resistance (RON) | 4 Ω (typical at VDD = 5 V) | Ω |
| On Resistance at VDD = 1.8 V | 40 Ω (typical) | Ω |
| Switching Time (tON, tOFF) | 14 ns, 6 ns (typical) | ns |
| Source/Drain Leakage Current (IS, ID OFF) | 250 pA (typical) | pA |
| Off Isolation | -80 dB (dc to 1 MHz), -60 dB (up to 10 MHz) | dB |
| Crosstalk | -60 dB (typical) | dB |
| Package Type | 8-Lead MSOP | |
| Operating Temperature Range | -40°C to +85°C | °C |
Key Features
- Low on resistance of 4 Ω (typical at VDD = 5 V) and 40 Ω (typical at VDD = 1.8 V)
- Fast switching times: 14 ns and 6 ns (typical)
- Low power dissipation and low leakage currents
- Single supply operation from 1.8 V to 5.5 V, making it suitable for battery-powered instruments
- Break-before-make switching action in the ADG723 (relevant for ADG721BRMZ configuration)
- High off isolation and low crosstalk
- Compact 8-lead MSOP package for space-constrained applications
Applications
- Battery-powered instruments
- Audio and video switching
- Medical devices
- Industrial control systems
- Communication systems requiring low power and high performance
Q & A
- What is the supply voltage range for the ADG721BRMZ?
The ADG721BRMZ operates from a single supply voltage ranging from 1.8 V to 5.5 V.
- What is the typical on resistance of the ADG721BRMZ at 5 V supply?
The typical on resistance is 4 Ω at VDD = 5 V.
- What are the switching times for the ADG721BRMZ?
The switching times are typically 14 ns and 6 ns.
- What is the package type for the ADG721BRMZ?
The ADG721BRMZ is packaged in an 8-lead MSOP.
- What is the operating temperature range for the ADG721BRMZ?
The operating temperature range is -40°C to +85°C.
- Does the ADG721BRMZ have break-before-make switching action?
The ADG723 series, which includes configurations similar to the ADG721, exhibits break-before-make switching action. However, this specific detail is more relevant to the ADG723 configuration.
- What are some typical applications for the ADG721BRMZ?
Typical applications include battery-powered instruments, audio and video switching, medical devices, industrial control systems, and communication systems.
- How does the supply voltage affect the performance of the ADG721BRMZ?
The supply voltage affects the input signal range, on resistance, and switching times of the device. For example, at VDD = 1.8 V, the on resistance is typically 40 Ω).
- What are the leakage currents for the ADG721BRMZ?
The source/drain leakage current is typically 250 pA when the switch is off).
- What is the off isolation of the ADG721BRMZ?
The off isolation is better than -80 dB from dc to 1 MHz and better than -60 dB up to 10 MHz).
