LTC6400-20 Series

1.9GHz Low Noise, Low Distortion Differential ADC Driver for DC-300MHz

Catalog

1.9GHz Low Noise, Low Distortion Differential ADC Driver for DC-300MHz

Part	Supplier Device Package	Applications	Package / Case	Mounting Type	Type	Current - Output / Channel	Supplied Contents	-3db Bandwidth	Voltage - Supply, Single/Dual (±) [Min]	Voltage - Supply, Single/Dual (±) [Max]	Channels per IC	Board Type	Slew Rate	Amplifier Type	Utilized IC / Part	Current - Output / Channel [custom]	Contents	Current - Supply (Main IC)
Analog Devices LTC6400CUD-14#TRPBF	16-QFN (3x3)	Data Acquisition	16-WFQFN Exposed Pad	Surface Mount	ADC Driver
Analog Devices DC987B-B						20 mA	Board(s)	2.4 GHz	2.85 V	3.5 V	1 - Single	Fully Populated	6000 V/µs	Differential	LTC6400-14
Analog Devices DC987B-A						20 mA	Board(s)	2.2 GHz	2.85 V	3.5 V	1 - Single	Fully Populated	3810 V/µs	Differential	LTC6400-8	20 mA	Board(s)	85 mA
Analog Devices LTC6400IUD-20#PBF	16-QFN (3x3)	Data Acquisition	16-WFQFN Exposed Pad	Surface Mount	ADC Driver
Analog Devices LTC6400CUD-20#PBF	16-QFN (3x3)	Data Acquisition	16-WFQFN Exposed Pad	Surface Mount	ADC Driver
Analog Devices LTC6400IUD-14#PBF	16-QFN (3x3)	Data Acquisition	16-WFQFN Exposed Pad	Surface Mount	ADC Driver
Analog Devices LTC6400IUD-26#PBF	16-QFN (3x3)	Data Acquisition	16-WFQFN Exposed Pad	Surface Mount	ADC Driver
Analog Devices LTC6400IUD-26#TRPBF	16-QFN (3x3)	Data Acquisition	16-WFQFN Exposed Pad	Surface Mount	ADC Driver
Analog Devices LTC6400IUD-8#TRPBF	16-QFN (3x3)	Data Acquisition	16-WFQFN Exposed Pad	Surface Mount	ADC Driver
Analog Devices DC987B-D						20 mA	Board(s)	1.9 GHz	2.85 V	3.5 V	1 - Single	Fully Populated	6670 V/µs	Differential	LTC6400-26

Catalog

1.9GHz Low Noise, Low Distortion Differential ADC Driver for DC-300MHz

Key Features

• 2.4GHz –3dB Bandwidth

• Fixed Gain of 5V/V (14dB)

• –97dBc IMD3 at 70MHz (Equivalent OIP3 = 52.4dBm)

• –66dBc IMD3 at 300MHz (Equivalent OIP3 = 36.9dBm)

• 1.1nV/√HzInternal Op Amp Noise

• 2.5nV/√HzTotal Input Noise

• 7.5dB Noise Figure

• Differential Inputs and Outputs

• 200Ω Input Impedance

• 2.85V to 3.5V Supply Voltage

• 85mA Supply Current (255mW)

• 1V to 1.6V Output Common Mode Voltage, Adjustable

• DC- or AC-Coupled Operation

• Max Differential Output Swing 4.8VP-P

• Small 16-Lead 3mm × 3mm × 0.75mm QFN Package

Description

The LTC6400-20 is a high-speed differential amplifier targeted at processing signals from DC to 300MHz. The part has been specifically designed to drive 12-, 14- and 16-bit ADCs with low noise and low distortion, but can also be used as a general-purpose broadband gain block.The LTC6400-20 is easy to use, with minimal support circuitry required. The output common mode voltage is set using an external pin, independent of the inputs, which eliminates the need for transformers or AC-coupling capacitors in many applications. The gain is internally fixed at 20dB (10V/V).The LTC6400-20 saves space and power compared to alternative solutions using IF gain blocks and transformers. The LTC6400-20 is packaged in a compact 16-lead 3mm × 3mm QFN package and operates over the –40°C to 85°C temperature range.ApplicationsDifferential ADC DriverDifferential Driver/ReceiverSingle Ended to Differential ConversionIF Sampling ReceiversSAW Filter Interfacing