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LT1993-10 Series

800MHz Low Distortion, Low Noise Differential Amplifier ADC Driver (Av = 2V/V)

Manufacturer: Analog Devices

Catalog

800MHz Low Distortion, Low Noise Differential Amplifier ADC Driver (Av = 2V/V)

Key Features

• 700MHz −3dB Bandwidth
• Fixed Gain of 10V/V (20dB)
• Low Distortion:40dBm OIP3, -70dBc HD3 (70MHz 2VP-P)50.5dBm OIP3, -91dBc (10MHz 2VP-P)
• 40dBm OIP3, -70dBc HD3 (70MHz 2VP-P)
• 50.5dBm OIP3, -91dBc (10MHz 2VP-P)
• Low Noise: 12.7dB NF, en= 1.9nV/√Hz
• Differential Inputs and Outputs
• Additional Filtered Outputs
• Adjustable Output Common Mode Voltage
• DC- or AC-Coupled Operation
• Minimal Support Circuitry Required
• Small 0.75mm Tall 16-Lead 3 × 3 QFN Package

Description

AI
The LT1993-10 is a low distortion, low noise Differential Amplifier/ADC driver for use in applications from DC to 700MHz. The LT1993-10 has been designed for ease of use, with minimal support circuitry required. Exceptionally low input-referred noise and low distortion products (with either single-ended or differential inputs) make the LT1993-10 an excellent solution for driving high speed 12-bit and 14-bit ADCs. In addition to the normal unfiltered outputs (+OUT and -OUT), the LT1993-10 has a built-in 175MHz differential lowpass filter and an additional pair of filtered outputs (+OUTFILTERED, -OUTFILTERED) to reduce external filtering components when driving high speed ADCs. The output common mode voltage is easily set via the VOCMpin, eliminating either an output transformer or AC-coupling capacitors in many applications.The LT1993-10 is designed to meet the demanding requirements of communications transceiver applications. It can be used as a differential ADC driver, a general-purpose differential gain block, or in any other application requiring differential drive. The LT1993-10 can be used in data acquisition systems required to function at frequencies down to DC.The LT1993-10 operates on a 5V supply and consumes 100mA. It comes in a compact 16-lead 3 × 3 QFN package and operates over a -40°C to 85°C temperature range.ApplicationsDifferential ADC Driver for:ImagingCommunicationsDifferential Driver/ReceiverSingle Ended to Differential ConversionDifferential to Single Ended ConversionLevel ShiftingIF Sampling ReceiversSAW Filter Interfacing/Buffering