Maxim's redesigned DG417/DG418/DG419 precision, CMOS, monolithic analog switches now feature guaranteed on-resistance matching (3Ω max) between switches and guaranteed on-resistance flatness over the signal range (4Ω max). These switches conduct equally well in either direction and guarantee low charge injection, low power consumption, and an ESD tolerance of 2000V minimum per Method 3015.7. The new design offers low off-leakage current over temperature (less than 5nA at +85°C). The DG417/DG418 are single-pole/single-throw (SPST) switches. The DG417 is normally closed, and the DG418 is normally open. The DG419 is single-pole/double-throw (SPDT) with one normally closed switch and one normally open switch. Switching times are less than 175ns max for tON and less than 145ns max for tOFF. Operation is from a single +10V to +30V supply, or bipolar ±4.5V to ±20V supplies. The improved DG417/DG418/DG419 are fabricated with a 44V silicon-gate process.
The DG417, DG418, and DG419 are precision CMOS analog switches offering guaranteed on‑resistance matching and flatness, low charge injection, low power consumption, and robust ESD protection. They are available in SPST (DG417/DG418) and SPDT (DG419) configurations and operate from a single +10 V to +30 V supply or bipolar +4.5 V to +20 V supplies.
The document includes ordering information, pin‑out diagrams, absolute maximum ratings, electrical characteristics for both dual‑ and single‑supply operation, package dimensions, and test circuits. Typical applications cover communications, battery‑operated systems, sample‑and‑hold circuits, test equipment, modems, and military radios.
| On‑Resistance Matching (R_on) max | 89 Ω |
|---|---|
| Off‑Leakage Current (max at +85 °C) | <5 nA |
| ESD Tolerance | ≥2000 V |
| Turn‑Off Time (t_off) max | ≤145 ns |
| Supply Voltage Range (single supply) | +10 V to +30 V |
| Supply Voltage Range (bipolar) | +4.5 V to +20 V |
| Package Types | 8‑lead Plastic DIP, 8‑lead SO, dice |
They operate from a single +10 V to +30 V supply or from bipolar +4.5 V to +20 V supplies.
The off‑leakage current is less than 5 nA at +85 °C.
They provide a minimum ESD tolerance of 2000 V per Method 3015.7.