SP8T Absorptive RF Switch, 0.1–20 GHz
ERS-0120-010
0.1–20 GHz · Absorptive SP8T · TTL control · Fast switching
Ultra-wideband absorptive SP8T RF switch optimized for signal routing up to 20 GHz. Compact nickel-plated housing with SMA-F ports and a 3-bit TTL control header (E3/E2/E1).
Specifications subject to change without notice as part of continuous improvement.
Overview
Highlights
- Ultra-wideband coverage: 0.1–20 GHz
- Absorptive SP8T topology for broadband routing
- High isolation: 80 dB typical
- Fast switching speed: 120 ns typical
- TTL control interface (E3/E2/E1)
Integration notes
- Use stable, clean TTL drive levels (avoid floating inputs)
- Provide clean ±5 V rails with local decoupling
- Terminate unused RF ports with 50 Ω for best repeatability
- Designed for low-power cold switching applications
Applications
- Automated Test Equipment (ATE) / automated RF routing
- Radar, EW, and broadband receivers
- Lab switching matrices and test benches
- Multi-band communication subsystems
Key specifications
| Frequency range | 0.1 – 20 GHz |
|---|---|
| Insertion loss | 4.5 – 5.0 dB typ. |
| VSWR (input/output) | 1.7 – 2.0 :1 typ. |
| Isolation | 80 dB typ. |
| Switching speed | 120 ns typ. |
| Input power handling | 1 W max. |
| Control | TTL (E3/E2/E1) |
| Supply | +5 V @ 400 mA (typ), −5 V @ 50 mA (typ) |
| Operating temperature | −45 °C to +85 °C |
Specifications subject to change without notice.
Control
TTL control (E3/E2/E1)
Control is via 3-bit TTL selection lines (E3/E2/E1). J0 is the common RF port. J1–J8 are routed outputs.
Quick start
- Terminate unused RF ports with 50 Ω (recommended).
- Apply supply rails: +5 V and −5 V within specification.
- Apply TTL logic states (E3/E2/E1) to select the desired output path.
- Apply RF at low power first, then operate within rated input power limit.
TTL High: 2.8–5.0 V • TTL Low: 0–0.8 V. Avoid slow edges or floating inputs.
Truth table (E3 / E2 / E1)
0 0 0 |
J0 → J1 |
|---|---|
0 0 1 |
J0 → J2 |
0 1 0 |
J0 → J3 |
0 1 1 |
J0 → J4 |
1 0 0 |
J0 → J5 |
1 0 1 |
J0 → J6 |
1 1 0 |
J0 → J7 |
1 1 1 |
J0 → J8 |
Example wiring notes
Power rails:
+5V (typ 400 mA)
-5V (typ 50 mA)
GND (return)
Control:
E1 = LSB select
E2 = mid select
E3 = MSB select
Note:
Apply rails before toggling control lines.For best RF repeatability, terminate unused ports with 50 Ω loads.
Mechanical
- Dimensions (L × W × H): 104 × 24 × 10.2 mm
- Mounting holes: 4 × Ø2.7 mm through
- Finish: nickel plated housing
- Weight: ~65 g typical
- RF input: SMA-F (J0)
- RF outputs: SMA-F ×8 (J1–J8)
- Control header: E3 / E2 / E1 / −5V / +5V / GND
- ESD precautions recommended during handling and integration
Outline drawing
