Quad SPST analog switch integrates four independently controlled single-pole/single-throw channels with an SPI digital interface. The analog signal range extends from VSS to VDD and is specified for ±15 V dual-supply and 12 V single-supply operation. The interface supports CRC, invalid address, and SCLK count error detection, with burst and daisy-chain modes for multi-device control. Typical dual-supply performance includes 120 Ω on resistance, less than 1 pC charge injection, 1 pF off drain capacitance, and 1000 MHz bandwidth. The device operates over −40°C to +125°C in a 24-lead 4 mm × 4 mm LFCSP package.
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| Switch Configuration | Quad SPST |
| Interface | SPI |
| Dual Supply Voltage Range | ±4.5 to ±16.5V |
| Single Supply Voltage Range | 5 to 16.5V |
| Logic Supply Voltage Range | 2.7 to 5.5V |
| Analog Signal Range, Dual Supply | VSS to VDDV |
| On Resistance, Dual Supply | 120 typ, 260 maxΩ |
| On Resistance, Single 12 V Supply | 300 typ, 625 maxΩ |
| On-Resistance Match Between Channels | 2.5 typ, 11 maxΩ |
| On-Resistance Flatness | 20 typ, 79 maxΩ |
| Source Off Leakage | ±0.02 typ, ±1 maxnA |
| Drain Off Leakage | ±0.02 typ, ±1 maxnA |
| On Time | 375 typ, 450 maxns |
| Off Time | 125 typ, 205 maxns |
| Break-Before-Make Time Delay | 205 typ, 150 minns |
| Charge Injection | -0.9 typpC |
| Off Isolation | -80 typ at 1 MHzdB |
| Channel-to-Channel Crosstalk | -110 typ at 1 MHzdB |
| -3 dB Bandwidth | 1000 typMHz |
| Off Switch Drain Capacitance | 1 typ, 1.2 maxpF |
| On Switch Capacitance | 2.6 typ, 3 maxpF |
| Operating Temperature Range | -40 to +125°C |
| Package | 24-lead LFCSP, 4 mm × 4 mm |
| RoHS | Compliant |
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Evaluation board guide for the ADGS1212 SPI-controlled quad SPST switch. Features CRC error detection, ±15 V dual or +12 V single supply, and ACE software control.
