13 GHz Bandwidth 2 GS/s THA
- Test instrumentation equipment, ATE
- RF demodulation systems
- Software radio
- Digital receiver systems
- High-speed DAC deglitching
- THA for differential ADCs
- Digital sampling oscilloscopes
- Supports 2 GS/s sampling rate
- 13 GHz input bandwidth (small-signal)
- 10 GHz input bandwidth (0.5 Vpp)
- 8 GHz input bandwidth (1 Vpp)
- THD < -60 dB (1 GHz 1 Vpp input)
- THD < -35 dB (10 GHz 0.5 Vpp input)
- Ultra-low aperture jitter: < 50 fs
- 0 dB Gain with up to 1 Vpp out
- Differential master-slave architecture
- Multiple clock modes
- Fast rise time, < 25 ps (10-90%)
- Adjustable input termination voltage
- Single -5.2 V power supply
- Low power consumption: 1400 mW
- Available in 4mm2 QFN package
- Evaluation kit available
The 1321TH track-and-hold amplifier is designed for high precision sampling of wideband signals with multi-GHz frequency content. The master-slave architecture integrates two track-and-hold (T/H) circuits, clock mode selection logic, and a 50 Ω differential output buffer.
Sample rates up to 2 GS/s are supported. Clock modes include out-of-phase master-slave (M/S) clocking based on a single clock signal and independent M/S clocking based on two clock signals. The output is settled for nearly a complete clock cycle of the slave T/H.
Analog inputs are DC-coupled and terminated on-chip with 50 Ω to a user-adjustable voltage. The 1321TH can be driven single-ended or differentially and provides differential outputs.
An output buffer provides 0 dB overall THA gain and up to 1 Vpp differential output swing into a 50 Ω load. The differential clock inputs are DC-coupled and terminated through 50 Ω to ground.
Because of its low power dissipation and low thermal resistance, the 1321TH does not normally require a heatsink when operated at a case temperature up to the the maximum case temperature of 85 °C.
The 1321TH operates from a single -5.2 V power supply. It is available in a
4 mm2 QFN package. It is also available on an evaluation board with SMA connectors.