Overview
The HMC629ALP4ETR is a broadband 4-bit GaAs IC Digital Attenuator produced by Analog Devices Inc. This versatile component is housed in a low-cost, leadless SMT package and is designed for a wide variety of RF and IF applications. It incorporates off-chip AC ground capacitors for near DC operation, making it suitable for various high-frequency uses. The attenuator features a dual-mode control interface that is CMOS/TTL compatible, accepting either a three-wire serial input or a 4-bit parallel word.
Key Specifications
| Parameter | Min. | Typ. | Max. | Units |
|---|---|---|---|---|
| Frequency Range | DC | - | 10 GHz | - |
| Insertion Loss | - | 2.25 dB | 5 dB | dB |
| Attenuation Range | - | - | 45 dB | dB |
| Attenuation Step Size | - | 3 dB | - | dB |
| Attenuation Accuracy | - | ±0.25 dB | ± (0.50 + 5% of Atten. Setting) | dB |
| Return Loss (ATTIN, ATTOUT) | 17 dB | - | - | dB |
| RF Input Power (DC - 6 GHz) | - | - | 28 dBm (T = +85 °C, Vdd= 5V) | dBm |
| Bias Voltage (Vdd) | - | 3V or 5V | 5.6V | V |
| Operating Temperature | -40 °C | - | +85 °C | °C |
| Storage Temperature | -65 °C | - | +150 °C | °C |
Key Features
- Dual-mode control interface: CMOS/TTL compatible, accepting either a three-wire serial input or a 4-bit parallel word.
- No external matching components required.
- RoHS compliant 4x4 mm QFN leadless package.
- Low insertion loss: 2.25 dB typical.
- High attenuation accuracy: ±0.25 dB typical step error.
- Power-up state selection.
- Single +3V or +5V supply.
Applications
- Cellular/3G Infrastructure
- WiBro / WiMAX / 4G
- Microwave Radio & VSAT
- Test Equipment and Sensors
- IF & RF Applications
Q & A
- What is the frequency range of the HMC629ALP4ETR? The frequency range is from DC to 10 GHz.
- What is the typical insertion loss of the HMC629ALP4ETR? The typical insertion loss is 2.25 dB.
- What is the attenuation range of the HMC629ALP4ETR? The attenuation range is up to 45 dB.
- What are the control interface options for the HMC629ALP4ETR? The control interface options include a three-wire serial input or a 4-bit parallel word, both CMOS/TTL compatible.
- Does the HMC629ALP4ETR require external matching components? No, it does not require external matching components.
- What is the typical attenuation step size of the HMC629ALP4ETR? The typical attenuation step size is 3 dB.
- What are the operating temperature ranges for the HMC629ALP4ETR? The operating temperature range is from -40 °C to +85 °C.
- What are the typical applications of the HMC629ALP4ETR? Typical applications include cellular/3G infrastructure, WiBro / WiMAX / 4G, microwave radio & VSAT, test equipment and sensors, and IF & RF applications.
- What is the package type of the HMC629ALP4ETR? The package type is a RoHS compliant 4x4 mm QFN leadless package.
- What are the bias voltage options for the HMC629ALP4ETR? The bias voltage options are single +3V or +5V supply.
