component
HMC909LP4ETR
Public Unreviewedby Ray
Analog Devices RF Detectors, QFN-24-EP(4x4). Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownHMC909LP4ETR
Analog Devices · RF Detectors · QFN-24-EP(4x4)
HMC909LP4ETR from Analog Devices, in a QFN-24-EP(4x4). Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | Vcc | power_in | Power supply pin; connect 4.5-5.5V nominal 5V with appropriate filtering; multiple power pins for reduced inductance. |
| 2 | GND | power_in | Package ground pin that must be connected to RF/DC ground plane; multiple ground pins for reduced inductance and improved grounding. |
| 3 | IN+ | input | Positive RF input pin for differential single-ended input configuration with DC bias at approximately Vcc-1.2V and 120Ω impedance to IN-. |
| 4 | IN- | input | Negative RF input pin for differential single-ended input configuration with DC bias at approximately Vcc-1.2V and 120Ω impedance to IN+. |
| 5 | GND | power_in | Package ground pin that must be connected to RF/DC ground plane; multiple ground pins for reduced inductance and improved grounding. |
| 6 | GND | power_in | Package ground pin that must be connected to RF/DC ground plane; multiple ground pins for reduced inductance and improved grounding. |
| 7 | ENX | input | Disable pin for power-down control; connect to GND for normal operation or apply voltage >0.8xVcc to enable low-power standby mode (3mA supply current). |
| 8 | GND | power_in | Package ground pin that must be connected to RF/DC ground plane; multiple ground pins for reduced inductance and improved grounding. |
| 9 | COFSA | passive | High-pass filter capacitor connection point A; connect capacitor between COFSA and COFSB to determine 3dB cutoff frequency per formula fc=1/(π×fL×3.2). |
| 10 | COFSB | passive | High-pass filter capacitor connection point B; connect capacitor between COFSB and COFSA to determine 3dB cutoff frequency of input signal high-pass filter. |
| 11 | GND | power_in | Package ground pin that must be connected to RF/DC ground plane; multiple ground pins for reduced inductance and improved grounding. |
| 12 | GND | power_in | Package ground pin that must be connected to RF/DC ground plane; multiple ground pins for reduced inductance and improved grounding. |
| 13 | GND | power_in | Package ground pin that must be connected to RF/DC ground plane; multiple ground pins for reduced inductance and improved grounding. |
| 14 | VSET | input | Set point input for negative feedback and controller mode operation; accepts 0.35-2.1V for slope and intercept adjustment with 5MΩ input resistance. |
| 15 | RMSOUT | output | Logarithmic output providing true RMS indication of input RF power with output voltage range 0.35-2.1V and 8mA source/0.53mA sink current capability. |
| 16 | Vcc | power_in | Power supply pin; connect 4.5-5.5V nominal 5V with appropriate filtering; multiple power pins for reduced inductance. |
| 17 | SCI1 | input | Digitally programmable integration bandwidth control bit 1 (LSB); set >0.8xVcc to enable and <0.2xVcc to disable; combines with SCI2-4 for octave integration time steps. |
| 18 | SCI2 | input | Digitally programmable integration bandwidth control bit 2; set >0.8xVcc to enable and <0.2xVcc to disable; combines with SCI1, SCI3, SCI4 to form 4-bit integration setting. |
| 19 | SCI3 | input | Digitally programmable integration bandwidth control bit 3; set >0.8xVcc to enable and <0.2xVcc to disable; combines with SCI1, SCI2, SCI4 to form 4-bit integration setting. |
| 20 | SCI4 | input | Digitally programmable integration bandwidth control bit 4 (MSB); set >0.8xVcc to enable and <0.2xVcc to disable; valid settings SCI=0000 to 1100 only (1101-1111 forbidden states). |
| 21 | Vcc | power_in | Power supply pin; connect 4.5-5.5V nominal 5V with appropriate filtering; multiple power pins for reduced inductance. |
| 22 | GND | power_in | Package ground pin that must be connected to RF/DC ground plane; multiple ground pins for reduced inductance and improved grounding. |
| 23 | Vcc | power_in | Power supply pin; connect 4.5-5.5V nominal 5V with appropriate filtering; multiple power pins for reduced inductance. |
| 24 | N/C | unconnected | No internal connection; however, all measurement data in this datasheet was taken with this pin externally connected to RF/DC ground for improved performance. |
| 25 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Analog Devices |
| Package | QFN-24-EP(4x4) |
| Category | RF And Wireless |
| Pins | 25 |
CAD (KiCad official)
- Symbol:
HMC909LP4ETR - Footprint:
Package_DFN_QFN:QFN-24-1EP_4x4mm_P0.5mm_EP2.7x2.7mm - 3D model: QFN-24-EP(4x4) (KiCad packages3D, STEP)
- 3D model files:
hmc909lp4etr-etched.step/hmc909lp4etr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);hmc909lp4etr.step/hmc909lp4etr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Analog Devices datasheet (21 pp, sha256
254d1f5556c6c2c0, retrieved 2026-09-17, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.2, primaryclaude-haiku-4-5-20251001(text), consensusclaude-sonnet-4-6(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).