HMC311ALP3E - DC-6GHz Gain Block MMIC, 17dBm P1dB | Analog Devices
N.º da peça: HMC311ALP3E ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $7.2 | $7,20 |
| 10 | $6.45 | $64,50 |
| 100 | $5.5 | $550,00 |
| 500 | $4.95 | $2.475,00 |
| 1.000 | $4.4 | $4.400,00 |
HMC311ALP3E Visão geral
A gain block MMIC is a self-biased, 50 Ω-matched RF amplifier intended to be cascaded as a generic gain stage within a transceiver or signal-chain design. HBT gain blocks sit in the RF front-end hierarchy below power amplifiers and above LNAs; the HMC311ALP3E in particular is widely used as a LO driver for mixers, an IF buffer, or a general-purpose cascadable gain element where flat gain, good linearity, and minimal external parts are required.
Key features include the Darlington feedback pair topology, which reduces sensitivity to normal process variations and yields excellent gain stability over temperature. The device requires only a single positive supply, two RF bypass capacitors, and an optional RF choke, dramatically simplifying PCB layout. Internal matching to 50 Ω at both RF ports eliminates the need for external matching networks in the 0.05–6 GHz band, supporting broadband applications such as test instrumentation, IF buffers, and LO distribution.
Typical applications include driving the LO port of Analog Devices HMC mixers with up to +17 dBm of output power, fiber-optic driver amplification, IF amplification in microwave radio links, and general-purpose broadband gain stages for laboratory test equipment. The wide DC-6 GHz bandwidth also makes it suitable as a buffer for synthesizers and frequency-agile up/down converters.
When designing with the HMC311ALP3E, observe the absolute maximum input RF drive of +20 dBm to prevent damage to the HBT input stage. Decouple Vcc with 100 pF and 4.7 nF capacitors placed as close to the Vcc pin as possible, and provide a 50 Ω microstrip or coplanar launch at both RF pins for stable broadband operation above 3 GHz.
This page synthesizes distributor pricing, drop-in pin-compatible alternatives, application circuits, and engineering design notes that complement the manufacturer datasheet and are not duplicated on distributor catalog pages.
Alternativas drop-in para HMC311ALP3E — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
HMC311LP3E
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
HMC311LP3
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
HMC311
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
HMC396
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
HMC397
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
HMC311ALP3E Classificações máximas e características elétricas
| Função | Gain Block / Cascadable RF Amplifier |
| Technology | GaAs InGaP HBT MMIC |
| Frequency Range | DC to 6 GHz |
| Small-Signal Gain | 14.5 dB (typical at 2 GHz) |
| Output P1dB | +17 dBm (typical) |
| Output IP3 (OIP3) | +32 dBm (typical) |
| Supply Voltage (Vcc) | +5 V (typical) |
| Corrente de alimentação | 56 mA (typical) |
| Input / Output Impedance | 50 Ω (internally matched) |
| Topologia | Darlington feedback pair |
| Encapsulamento | 16-lead LFCSP, 3 mm x 3 mm |
| Tipo de montagem | Surface Mount |
| Temperatura de operação | -40 C to +85 C |
| Nível MSL | MSL1 (per JEDEC J-STD-020) |
| Status RoHS | Compliant |
Configuração de pinos do HMC311ALP3E
| Pino 1 | GND — RF/DC ground |
| Pino 2 | RFIN — RF input, internally matched to 50 ohm |
| Pino 3 | GND — RF/DC ground |
| Pino 4 | Vcc — DC bias supply, +5 V nominal |
| Pino 5 | GND — RF/DC ground |
| Pino 6 | GND — RF/DC ground |
| Pino 7 | GND — RF/DC ground |
| Pino 8 | GND — RF/DC ground |
| Pino 9 | GND — RF/DC ground |
| Pino 10 | GND — RF/DC ground |
| Pino 11 | GND — RF/DC ground |
| Pino 12 | GND — RF/DC ground |
| Pino 13 | RFOUT — RF output, internally matched to 50 ohm |
| Pino 14 | GND — RF/DC ground |
| Pino 15 | GND — RF/DC ground |
| Pino 16 | GND — RF/DC ground |
Aplicações típicas
HMC311ALP3E é adequado para 6 aplicaçãos: LO Driver for HMC Mixers, IF Buffer Amplifier, Test & Measurement Instrumentation, Point-to-Point Microwave Radio, Fiber-Optic Driver Amplifier, General-Purpose Cascadable Gain Stage.
LO Driver for HMC Mixers
The HMC311ALP3E is purpose-designed to drive the local oscillator port of Analog Devices HMC-series passive and active mixers. Its +17 dBm output P1dB comfortably exceeds the +10 to +15 dBm LO drive requirement of most HMC mixers, while the +32 dBm output IP3 leaves substantial linearity headroom to suppress LO leakage and intermodulation products that would otherwise degrade mixer noise figure and conversion spurious performance. The 50 Ω internal match on both RFIN and RFOUT ports allows the part to be cascaded directly between a synthesizer/VCO and the mixer LO input with only DC-blocking and bypass capacitors. DC-6 GHz bandwidth covers fundamental LO frequencies through C-band, supporting microwave radio and satellite up/down converters.
Recomendado
IF Buffer Amplifier
Used as a 50 Ω IF buffer between a mixer and baseband or ADC front-end, the HMC311ALP3E's 14.5 dB of gain compensates for mixer conversion loss and provides a low-impedance drive for analog-to-digital converters. Its DC-6 GHz bandwidth covers any IF from baseband up through L-band, including 70/140/240 MHz SAW-filter IFs, 1-2 GHz microwave radio IFs, and 3-5 GHz wideband IFs. The +32 dBm OIP3 means the buffer introduces minimal third-order intermodulation distortion into the signal path, while the 50 Ω match absorbs mixer return loss without introducing standing waves. Designers typically place the HMC311ALP3E directly after a SAW filter with a series DC-blocking capacitor and a 100 ohm pull-up on Vcc.
Recomendado
Test & Measurement Instrumentation
The HMC311ALP3E's DC-6 GHz bandwidth and 50 Ω input/output match make it ideal as a general-purpose gain stage inside laboratory test equipment such as signal generators, spectrum-analyzer front-ends, and bench-top amplifier modules. The +17 dBm P1dB is sufficient to drive passive mixers and frequency doublers while preserving linearity; the +32 dBm OIP3 ensures that cascaded stages in a measurement instrument do not create internal IMD products that would limit dynamic range. The 16-lead 3x3 mm LFCSP package occupies only 9 mm² of PCB area, leaving ample room for attenuators, switches, and bias networks around the gain stage. Self-biasing from a single +5 V rail simplifies portable / battery-powered instrument designs.
Recomendado
Point-to-Point Microwave Radio
The HMC311ALP3E serves as a broadband IF or LO buffer inside 6-42 GHz point-to-point microwave radio links, where it sits between the modem/modulator and the upconverter or between the downconverter and the demodulator. Its DC-6 GHz bandwidth covers standard IFs of 140 MHz, 240 MHz, 1-2 GHz, and 3.5 GHz, and the 14.5 dB gain compensates for filter and combiner losses in the IF chain. The +17 dBm P1dB and +32 dBm OIP3 meet typical radio-link linearity budgets, while the Darlington feedback topology yields stable gain over the -40 to +85 °C industrial temperature range required for outdoor radio units. The LFCSP-16 (3x3) package is thermally efficient enough to operate without external heatsinking at the part's 280 mW typical dissipation.
Recomendado
Fiber-Optic Driver Amplifier
The HMC311ALP3E's DC-6 GHz bandwidth and 50 Ω match make it a viable driver for fiber-optic transmitters operating at data rates from baseband up to 5 Gbps. The +17 dBm output P1dB is sufficient to modulate directly-modulated laser diodes or to drive external Mach-Zehnder modulators after a bias network, while the broadband flat gain (typically ±0.5 dB across DC-4 GHz) preserves signal integrity for NRZ and PAM4 modulation formats. Low 1/f noise corner from the HBT process helps suppress pattern-dependent jitter in optical links. Designers typically AC-couple the HMC311ALP3E output to the laser or modulator bias-T, with a 50 Ω termination and DC-blocking capacitor at the RF output.
Recomendado
General-Purpose Cascadable Gain Stage
The HMC311ALP3E functions as a generic 50 Ω cascadable gain block anywhere a designer needs +14 to +16 dB of flat broadband gain with minimal external components. Its internal 50 Ω match on both ports allows multiple HMC311ALP3E stages to be cascaded in series (separated by attenuators or filters for stability) to build up higher gain - e.g., two cascaded stages yield ~28 dB of gain across DC-6 GHz. Common uses include gain blocks in software-defined radios, low-cost phased-array element drivers, broadband ATE / bench amplifiers, and prototyping platforms where a known-good broadband gain stage simplifies bring-up. The single +5 V bias and Darlington topology minimize external component count.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para HMC311ALP3E — comparação, orientação de projeto e informações de conformidade.
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Comparação com alternativas
| Parâmetro | Este produto | HMC311LP3E | HMC311LP3 | HMC311 | HMC396 | HMC397 |
|---|---|---|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Package | 16-LFCSP (3x3 mm) | 16-LFCSP (3x3 mm) - same | 16-LFCSP (3x3 mm) - same | 16-LFCSP (3x3 mm) - same | 16-LFCSP (3x3 mm) - same | 16-LFCSP (3x3 mm) - same |
| Frequency Range | DC to 6 GHz | DC to 6 GHz | DC to 6 GHz | DC to 6 GHz | DC to 6 GHz | DC to 6 GHz |
| Small-Signal Gain | 14.5 dB | 14.5 dB | 14.5 dB | 14.5 dB | ~13 dB | ~12 dB |
| Output P1dB | +17 dBm | +17 dBm | +17 dBm | +17 dBm | +15 dBm | +14 dBm |
| Output IP3 (OIP3) | +32 dBm | +32 dBm | +32 dBm | +32 dBm | +28 dBm | +26 dBm |
| Supply Voltage | +5 V | +5 V | +5 V | +5 V | +5 V | +5 V |
| Supply Current | 56 mA | 56 mA | 56 mA | 56 mA | ~55 mA | ~50 mA |
| Topology | Darlington HBT | Darlington HBT | Darlington HBT | Darlington HBT | Darlington HBT | Darlington HBT |
| RoHS Compliance | Yes (lead-free) | Yes (lead-free) | SnPb finish | Yes | Yes | Yes |
Principais diferenciais
- RoHS-compliant lead-free finish (vs HMC311LP3)
- Higher P1dB and OIP3 in same package (vs HMC396 / HMC397)
- Drop-in compatible with original HMC311 family (vs HMC311LP3E)
- Self-biased, single-supply operation (vs Discrete BJT / FET gain stages)
Notas de projeto
The 16-lead LFCSP package has a center exposed paddle (die pad) on the underside that must be soldered directly to the PCB ground plane for both electrical grounding and thermal dissipation. Use an array of thermal vias (typically 4-9 vias on 0.5 mm pitch) under the pad to drop heat into inner ground planes. RFIN (pin 2) and RFOUT (pin 13) traces should be 50 Ω controlled-impedance microstrip or coplanar waveguide with ground, kept as short as possible to minimize insertion loss and parasitic inductance above 3 GHz.
Decouple Vcc (pin 4) with two capacitors in parallel: a 100 pF ceramic for high-frequency noise and a 4.7 nF ceramic (or larger) for low-frequency bypassing, placed as close to the Vcc pin as physically possible. The supply rail should be fed through an RF choke (typically 100 nH or higher) to isolate Vcc from the RFOUT trace - this prevents the DC bias network from loading the RF output. Ensure the +5 V regulator has at least 50 mA of headroom beyond the 56 mA quiescent current for warm-up transients.
Keep the ground return path under the RF traces continuous and unbroken. Place ground vias in a 'fence' pattern along both sides of the 50 Ω RF traces on the top layer, stitching the top ground to the next inner ground plane every lambda/20 at the highest operating frequency (e.g., every ~1.5 mm at 6 GHz). Avoid routing digital or noisy supply traces under or adjacent to the RFIN/RFOUT traces - the part's +32 dBm OIP3 can be degraded by 3-5 dB if sensitive RF traces share return paths with switching converters.
Do not exceed the absolute maximum input RF drive of +20 dBm - the HBT input stage has no internal limiter and will degrade in noise figure and gain if driven into compression. If the upstream source can deliver more than +20 dBm, insert an external attenuator (e.g., a 3 dB pad) between the source and RFIN. Also avoid operating with Vcc below +4.5 V or above +5.5 V; under-voltage reduces P1dB and gain, while over-voltage shifts bias and may trigger thermal shutdown at high ambient temperatures.
Estimated: at +5 V, 56 mA quiescent current, the part dissipates approximately 0.28 W; with the LFCSP-16 (3x3) thermal resistance of ~50 C/W to a 4-layer PCB with thermal vias, junction temperature rise above ambient is approximately 14 C. This is well within the -40 to +85 C operating range up to ~70 C ambient. For applications at higher ambient or with sustained high RF input drive (which adds DC bias current), ensure adequate PCB copper area around the exposed paddle - the HMC311ALP3E datasheet evaluation board layout provides a reference footprint.
Informações de conformidade
RoHS-compliant lead-free finish per Analog Devices product page. Halogen-free status not explicitly stated in verified web data - listed as unknown. Not AEC-Q100 qualified; this part targets commercial / industrial RF applications rather than automotive.
