Overview
The ADG658 is a low-voltage, CMOS analog multiplexer from Analog Devices Inc. It is designed to switch one of eight single-ended inputs (S1–S8) to a common output, D, based on the 3-bit binary address lines A0, A1, and A2. This device is part of the ADG658 and ADG659 series, which are known for their low power dissipation and high switching speeds. The ADG658 can operate as either a multiplexer or a demultiplexer and supports a wide input range that extends to the supplies. It features an EN input for enabling or disabling the device, with all channels switching off when disabled.
Key Specifications
| Parameter | Typical Value | Maximum Value | Unit | Test Conditions/Comments |
|---|---|---|---|---|
| Analog Signal Range | VSS to VDD | VSS to VDD | V | VDD = +4.5 V, VSS = −4.5 V |
| On Resistance (RON) | 45 Ω | 100 Ω | Ω | VS = ±4.5 V, IS = 1 mA; see Figure 21 |
| On Resistance Match between Channels (∆RON) | 1.3 Ω | 3.5 Ω | Ω | VS = 3.5 V, IS = 1 mA |
| On Resistance Flatness (RFLAT(ON)) | 10 Ω | 18 Ω | Ω | VDD = +5 V, VSS = −5 V; VS = ±3 V, IS = 1 mA |
| Source OFF Leakage (IS (OFF)) | ±0.005 nA | ±5 nA | nA | VD = ±4.5 V, VS = ±4.5 V; see Figure 22 |
| Drain OFF Leakage (ID (OFF)) | ±0.005 nA | ±5 nA | nA | VD = ±4.5 V, VS = ±4.5 V; see Figure 23 |
| Channel ON Leakage (ID, IS (ON)) | ±0.005 nA | ±5 nA | nA | VD = VS = ±4.5 V; see Figure 24 |
| Digital Input High Voltage (VINH) | 2.4 V | V | ||
| Digital Input Low Voltage (VINL) | 0.8 V | V | ||
| Digital Input Current (IINL or IINH) | 0.005 µA | ±1 µA | µA | VIN = VINL or VINH |
| Digital Input Capacitance (CIN) | 2 pF | pF | ||
| Transition Time (tTRANSITION) | 120 ns | 300 ns | ns | RL = 300 Ω, CL = 35 pF; see Figure 25 |
| Enable Time (tON (EN)) | 120 ns | 280 ns | ns | RL = 300 Ω, CL = 35 pF; see Figure 27 |
| Disable Time (tOFF (EN)) | 35 ns | ns |
Key Features
- Low-voltage, CMOS analog multiplexer with eight single-ended channels.
- 3-bit binary address lines (A0, A1, A2) for channel selection.
- EN input for enabling or disabling the device.
- Break-before-make switching action to prevent momentary shorting.
- Wide input range extending to the supplies.
- TTL/CMOS logic compatibility with single +5 V or dual ±5 V supplies.
- Low power dissipation and high switching speeds.
- Available in 16-lead TSSOP, QSOP, and 4 mm × 4 mm LFCSP packages.
Applications
- Signal routing and switching in various analog systems.
- USB 1.1 signal switching circuits.
- Video signal routing.
- Industrial control systems.
- Medical devices requiring precise signal switching.
- Aerospace and defense applications (ADG658-EP supports AQEC standard).
Q & A
- What is the ADG658 used for?
The ADG658 is used as a low-voltage, CMOS analog multiplexer to switch one of eight single-ended inputs to a common output.
- How are the channels selected in the ADG658?
The channels are selected using 3-bit binary address lines A0, A1, and A2.
- What is the purpose of the EN input on the ADG658?
The EN input enables or disables the device. When disabled, all channels are switched off.
- What type of switching action does the ADG658 exhibit?
The ADG658 exhibits break-before-make switching action to prevent momentary shorting when switching channels.
- What are the supported supply voltages for the ADG658?
The ADG658 supports single +5 V or dual ±5 V supplies.
- What are the typical and maximum on-resistance values for the ADG658?
The typical on-resistance is 45 Ω, and the maximum is 100 Ω.
- What is the transition time for the ADG658?
The transition time is typically 120 ns and maximally 300 ns.
- In what packages is the ADG658 available?
The ADG658 is available in 16-lead TSSOP, QSOP, and 4 mm × 4 mm LFCSP packages.
- Is the ADG658 suitable for aerospace and defense applications?
Yes, the ADG658-EP version supports AQEC standard for aerospace and defense applications.
- What are some common applications of the ADG658?
Common applications include signal routing, USB 1.1 signal switching, video signal routing, and industrial control systems.
