MAX2055
Digitally Controlled, Variable-Gain, Differential ADC Driver/Amplifier
Industry's First Low-Distortion, IF Differential ADC Driver with Digitally Selectable Gain
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Overview
Features and Benefits
- 30MHz to 300MHz Frequency Range
- Single-Ended-to-Differential Conversion
- -3dB to +20dB Variable Gain
- 40dBm Output IP3 (at All Gain States and 70MHz)
- 2nd Harmonic -76dBc
- 3rd Harmonic -69dBc
- Noise Figure: 5.8dB at Maximum Gain
- Digitally Controlled Gain with 1dB Resolution and ±0.2dB Accuracy
- Adjustable Bias Current
Product Details
The MAX2055 high-performance, digitally controlled, variable-gain, differential analog-to-digital converter (ADC) driver/amplifier (DVGA) is designed for use from 30MHz to 300MHz in base-station receivers.
The device integrates a digitally controlled attenuator and a high-linearity single-ended-to-differential output amplifier, which can either eliminate an external transformer, or can improve the even-order distortion performance of a transformer-coupled circuit, thus relaxing the requirements of the anti-alias filter preceding an ADC. Targeted for ADC driver applications to adjust gain either dynamically or as a one-time channel gain setting, the MAX2055 is ideal for applications requiring high performance. The attenuator provides 23dB of attenuation range with ±0.2dB accuracy.
The MAX2055 is available in a thermally enhanced 20-pin TSSOP-EP package and operates over the -40°C to +85°C temperature range.
Applications
- Automated Test Equipment (ATE)
- Broadband Systems
- Cell Phone Base Stations
- High-Performance ADC Drivers
- PHS/PAS Infrastructure
- Receiver Gain Control
- Terrestrial Links
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Product Lifecycle
Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
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