Key facts
- Brand
- Maxim
- Model
- MAX1979
- Category
- Other Electronics
- Industry
- Electronics
- Documents
- 2
- Languages
- EN
- Last added
- 2012-05-07
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Maxim MAX19790 Dual Analog Voltage Variable Attenuator Datasheet
The MAX19790 is a dual, general‑purpose analog voltage variable attenuator (VVA) designed for 50 Ω systems covering 250 MHz to 4000 MHz. Each channel provides 22 dB of attenuation with a linear control slope of 10 dB/V, and the two channels can be cascaded for a total of 44 dB dynamic range.
The device runs from a single +5.0 V supply, draws about 7.3 mA typical supply current, and is offered in a 36‑pin thin QFN package (6 mm × 6 mm × 0.8 mm). It operates reliably from –40 °C to +85 °C and includes pins for RF input/output, control voltage, and an exposed pad for thermal grounding.
Maxim MAX1979 specifications
| Frequency range | 250 MHz – 4000 MHz |
|---|---|
| Attenuation per channel | 22 dB |
| Total attenuation (cascaded) | 44 dB |
| Supply voltage | +5.0 V |
| Typical supply current | 7.3 mA |
| Linear control slope | 10 dB/V per attenuator |
| Package | 36‑pin thin QFN (6 mm × 6 mm × 0.8 mm) |
| Operating temperature range | -40 °C to +85 °C |
Source: Maxim MAX19790 Dual Analog Voltage Variable Attenuator Datasheet
All Maxim MAX1979 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What supply voltage does the MAX19790 require?
The MAX19790 operates from a single +5.0 V supply.
From: Maxim MAX19790 Dual Analog Voltage Variable Attenuator Datasheet
How much attenuation does each channel provide?
Each channel provides 22 dB of attenuation; two channels cascaded give 44 dB total.
From: Maxim MAX19790 Dual Analog Voltage Variable Attenuator Datasheet
What is the supply voltage range for the MAX1978/MAX1979?
The devices operate from a supply voltage of 3.0 V to 5.5 V.
From: Maxim MAX1978/MAX1979 Integrated Temperature Controller Datasheet
What is the maximum output current for the MAX1978?
The MAX1978 provides a bipolar output current of up to +3 A.
From: Maxim MAX1978/MAX1979 Integrated Temperature Controller Datasheet