Overview
The ADA4961ACPZN-R7, produced by Analog Devices Inc., is a high-performance BiCMOS RF digital gain amplifier (DGA) designed to drive heavy loads up to 2.0 GHz and beyond. This amplifier is optimized for wideband, low distortion performance, making it ideal for various high-speed applications such as IF, RF, and broadband systems. It features digital adjustability with 1 dB resolution, enhancing the signal-to-noise ratio (SNR) over a wide range of input levels. The ADA4961 is particularly suited for driving analog-to-digital converters (ADCs), mixers, pin diode attenuators, SAW filters, and other multielement discrete devices.
Key Specifications
| Parameter | Value |
|---|---|
| Frequency Range | Up to 2.0 GHz |
| IMD3 Performance | −90 dBc at 500 MHz, −85 dBc at 1.5 GHz |
| Input Impedance | 100 Ω (differential) |
| Output Impedance | 50 Ω (differential dynamic) |
| Gain Adjustment | Digital, 1 dB resolution, 21 dB range |
| Supply Voltage | 5.5V |
| Package Type | 4 mm × 4 mm, 24-lead LFCSP |
| Operating Temperature | −40°C to +85°C |
Key Features
- High performance BiCMOS RF digital gain amplifier
- Wideband, low distortion performance up to 2.0 GHz
- Digital gain adjustment with 1 dB resolution
- Internal differential input impedance of 100 Ω and differential dynamic output impedance of 50 Ω
- No external termination resistors required
- Optimized for driving ADCs, mixers, pin diode attenuators, SAW filters, and multielement discrete devices
- Available in a 4 mm × 4 mm, 24-lead LFCSP package
Applications
The ADA4961ACPZN-R7 is ideally suited for a variety of high-speed applications, including:
- Analog-to-digital converters (ADCs)
- Mixers
- Pin diode attenuators
- SAW filters
- Multielement discrete devices
- Spectrum analyzers
- Data acquisition systems
- Military electronics applications such as radar and jamming/anti-jamming measures
Q & A
- What is the frequency range of the ADA4961ACPZN-R7?
The ADA4961ACPZN-R7 operates up to 2.0 GHz and beyond. - What is the IMD3 performance of the ADA4961ACPZN-R7?
The IMD3 performance is −90 dBc at 500 MHz and −85 dBc at 1.5 GHz. - What is the input impedance of the ADA4961ACPZN-R7?
The input impedance is 100 Ω (differential). - What is the output impedance of the ADA4961ACPZN-R7?
The output impedance is 50 Ω (differential dynamic). - How is the gain adjusted in the ADA4961ACPZN-R7?
The gain is adjusted digitally with 1 dB resolution over a 21 dB range. - What is the supply voltage for the ADA4961ACPZN-R7?
The supply voltage is 5.5V. - In what package is the ADA4961ACPZN-R7 available?
The ADA4961ACPZN-R7 is available in a 4 mm × 4 mm, 24-lead LFCSP package. - What is the operating temperature range of the ADA4961ACPZN-R7?
The operating temperature range is −40°C to +85°C. - What types of applications is the ADA4961ACPZN-R7 suited for?
The ADA4961ACPZN-R7 is suited for high-speed applications including ADCs, mixers, pin diode attenuators, SAW filters, and military electronics. - Does the ADA4961ACPZN-R7 require external termination resistors?
No, the ADA4961ACPZN-R7 does not require external termination resistors due to its internal differential input and output impedances.
