Model No: HMC661LC4B
Analog Devices Inc. HMC661LC4B
Manufacturer: Analog Devices Inc.
SEMICON NO.: HMC661LC4B
Package: 24-QFN
Stock: In stock
Description: RF Amplifier IC GP 0Hz to 18GHz
SEMICON NO.: HMC661LC4B
Package: 24-QFN
Stock: In stock
Description: RF Amplifier IC GP 0Hz to 18GHz
Quantity :
| Mfr | Analog Devices Inc. |
| Device Type | Ultra-Wideband Track-and-Hold Amplifier (T/H) |
| Input Bandwidth | DC to 18 GHz |
| Maximum Sampling Rate | 4 GS/s |
| Linearity | 9–10 bit |
| Random Aperture Jitter | < 70 fs |
| Hold Mode Output Noise (RMS) | 1.05 mV |
| I/O Coupling | Direct-Coupled I/O |
| Output Buffer Delay | 43 ps |
| Total Power Consumption | 1.59 W (Typical) |
| Operating Temperature | 0°C to +85°C |
| Package | 24-QFN |
| Mounting Type | Surface Mount |
| Compliance | RoHS Compliant |
The HMC661LC4B is an ultra-wideband track-and-hold (T/H) amplifier from Analog Devices, originally designed by Hittite Microwave. It is a SiGe monolithic, fully differential, single-rank T/H that samples signals over an 18 GHz input bandwidth at up to 4 GS/s with minimal dynamic range loss, delivering 9 to 10-bit linearity from DC to beyond 5 GHz, 1.05 mV rms hold-mode output noise and less than 70 fs random aperture jitter. It comes in a RoHS-compliant 4 mm x 4 mm, 24-lead surface-mount package, runs from a nominal 2 V supply at 82 mA, and is rated 0 °C to +85 °C.
Highlights and Key Features
● 18 GHz input bandwidth at 1 Vp-p full scale, letting one device capture signals far beyond the reach of conventional samplers.
● 4 GS/s maximum sampling rate with only 132 ps acquisition time and minimal dynamic range loss.
● 68 dB SFDR at 4 GHz and 0.5 Vp-p input (CLK = 1 GS/s), and 57 dB SFDR at 1 Vp-p, keeping spurs low in wideband capture.
● 1.05 mV rms hold-mode output noise and less than 70 fs random aperture jitter for clean, low-jitter sampling.
● 9 to 10-bit linearity from DC to beyond 5 GHz, extending the bandwidth and high-frequency linearity of high-speed ADCs.
● Direct-coupled differential I/O, over 60 dB hold-mode feedthrough rejection, ultra-clean output waveforms with minimal glitching, and a compact 4 mm x 4 mm SMT package.
Applications
● RF automated test equipment (ATE) and wideband signal acquisition systems.
● Digital sampling oscilloscopes and high speed peak detectors.
● RF demodulation, digital receiver systems and software defined radio.
● Radar, ECM and ELINT systems, plus high speed DAC de-glitching.
Frequently Asked Questions
Q: What is the main advantage of the HMC661LC4B?
A: It samples at 4 GS/s across 18 GHz with under 70 fs jitter, extending a high speed ADC's bandwidth and linearity.
Q: Which supply rails does it need?
A: A nominal 2 V rail (1.9 V to 2.1 V) at 82 mA, together with the negative VEE supply required by the differential stage.
Q: How should it be used with an ADC?
A: Follow AN-1472; keep the clock source low jitter, match the differential pair, and avoid over-filtering the output path.
Alternative track-and-hold amplifier models
1. HMC661LC4BTR: the same 18 GHz T/H die supplied on a 100-piece tape and reel for automated assembly.
2. HMC760LC4B: a lower-cost single-rank sibling covering DC to 5 GHz at 4 GS/s with 0.9 mV rms noise.
3. HMC1061LC5: a dual-rank DC to 18 GHz, 4 GSPS T/H in a 5 mm x 5 mm ceramic LCC for de-glitching and better hold feedthrough.
● 18 GHz input bandwidth at 1 Vp-p full scale, letting one device capture signals far beyond the reach of conventional samplers.
● 4 GS/s maximum sampling rate with only 132 ps acquisition time and minimal dynamic range loss.
● 68 dB SFDR at 4 GHz and 0.5 Vp-p input (CLK = 1 GS/s), and 57 dB SFDR at 1 Vp-p, keeping spurs low in wideband capture.
● 1.05 mV rms hold-mode output noise and less than 70 fs random aperture jitter for clean, low-jitter sampling.
● 9 to 10-bit linearity from DC to beyond 5 GHz, extending the bandwidth and high-frequency linearity of high-speed ADCs.
● Direct-coupled differential I/O, over 60 dB hold-mode feedthrough rejection, ultra-clean output waveforms with minimal glitching, and a compact 4 mm x 4 mm SMT package.
Applications
● RF automated test equipment (ATE) and wideband signal acquisition systems.
● Digital sampling oscilloscopes and high speed peak detectors.
● RF demodulation, digital receiver systems and software defined radio.
● Radar, ECM and ELINT systems, plus high speed DAC de-glitching.
Frequently Asked Questions
Q: What is the main advantage of the HMC661LC4B?
A: It samples at 4 GS/s across 18 GHz with under 70 fs jitter, extending a high speed ADC's bandwidth and linearity.
Q: Which supply rails does it need?
A: A nominal 2 V rail (1.9 V to 2.1 V) at 82 mA, together with the negative VEE supply required by the differential stage.
Q: How should it be used with an ADC?
A: Follow AN-1472; keep the clock source low jitter, match the differential pair, and avoid over-filtering the output path.
Alternative track-and-hold amplifier models
1. HMC661LC4BTR: the same 18 GHz T/H die supplied on a 100-piece tape and reel for automated assembly.
2. HMC760LC4B: a lower-cost single-rank sibling covering DC to 5 GHz at 4 GS/s with 0.9 mV rms noise.
3. HMC1061LC5: a dual-rank DC to 18 GHz, 4 GSPS T/H in a 5 mm x 5 mm ceramic LCC for de-glitching and better hold feedthrough.
