Datasheet for ADA4961:
- Manufacturer Part Number : ADA4961
- Manufacturer : AD
- Description : Low Distortion, 3.2 GHz, RF DGA
- Series : ADA4961
- Reference Price : USD 9.592
- Our Price : We have a better price, contact us by email
- Product Type : Variable Gain Amplifiers (VGA)
- Function : Digital Control VGAs
- Current Suggest : Recommended for New Designs
- Status : Production
- RoHS Status: -
- Voltage: -
- Feature: -
- Package Case: -
- Temperature Range: -
- Packing: Reel/Tray/Tube
- Standard Packing Quantity: -
- Country of Origin: -
- Other Part Number : ADA4961
- Shipping methods : DHL FEDEX UPS TNT
- Delivery Time : Ship within 1 day.
- Manufacturer Production time : 6-8 weeks (Normally have stocks)
- Weight : 0.001KG
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- High speed
- −3 dB bandwidth: 3.2 GHz
- −1 dB bandwidth: 1.8 GHz
- Slew rate: 12,000 V/μs
- Digitally adjustable gain
- Voltage gain: −6 dB to +15 dB
- Power gain: −3 dB to +18 dB
- 5-bit parallel or SPI bus gain control with fast attack
- IMD3/HD3 distortion, maximum gain, 5 V, high performance (HP) mode
- IMD3/HD3 at 1 GHz: −90 dBc/−83 dBc
- IMD3/HD3 at 1.5 GHz: −85 dBc/−75 dBc
- IMD3/HD3 at 2 GHz: −70 dBc/−70 dBc
- Low noise
- Noise density referred to output (RTO): −154 dBm/Hz
- Noise figure: 5.5 dB at AV = 15 dB, 1 GHz
- Differential impedances: 100 Ω input, 50 Ω output
- Low power mode operation, power-down control
- Single 3.3 V or 5 V supply operation
- Available in 24-lead, 4 mm × 4 mm LFSCP
The ADA4961 is a high performance, BiCMOS RF digital gain amplifier (DGA), optimized for driving heavy loads out to 2.0 GHz and beyond. The device typically achieves −90 dBc IMD3 performance at 500 MHz and −85 dBc at 1.5 GHz. This RF performance allows GHz converters to achieve their optimum performance with minimal limitations of the driver amplifier or constraints on overall power that typically result from GaAs amplifiers. This device can easily drive 10-bit to 16-bit HS converters.
For many receiver applications, antialias filter (AAF) designs can be simplified or not required.
The ADA4961 has an internal differential input impedance of 100 Ω and a differential dynamic output impedance of 50 Ω, eliminating the need for external termination resistors. The digital adjustability provides for 1 dB resolution, thus optimizing the signal-to-noise ratio (SNR) for input levels spanning 21 dB.
The ADA4961 is optimized for wideband, low distortion performance at frequencies up to 2 GHz. These attributes, together with wide gain adjustment and relatively low power, make the ADA4961 the amplifier of choice for many high speed applications, including IF, RF, and broadband applications where dynamic range at very high frequencies is critical.
The ADA4961 is ideally suited for driving not only analog-to-digital converters (ADCs), but also mixers, pin diode attenuators, SAW filters, and multielement discrete devices. It is available in a 4 mm × 4 mm, 24-lead LFCSP and operates over a temperature range of −40°C to +85°C.
Applications
- ADC driver for 10-bit to 14-bit GSPS converters
- RF/IF gain blocks
- Line drivers
- Instrumentation
- Satellite communications
- Data acquisition
- Military systems
This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.
