Datasheet LT6402-6 (Analog Devices)
| Manufacturer | Analog Devices |
| Description | 300MHz Low Distortion, Low Noise Differential Amplifier/ADC Driver (AV = 6dB) |
| Pages / Page | 16 / 1 — FEATURES. DESCRIPTION. APPLICATIONS. Distortion vs Frequency, … |
| File Format / Size | PDF / 238 Kb |
| Document Language | English |
FEATURES. DESCRIPTION. APPLICATIONS. Distortion vs Frequency, Differential Input, No RLOAD. TYPICAL APPLICATION
Model Line for this Datasheet
Text Version of Document
LT6402-6 300MHz Low Distortion, Low Noise Differential Amplifi er/ ADC Driver (AV = 6dB)
FEATURES DESCRIPTION
n 300 MHz –3dB Bandwidth The LT®6402-6 is a low distortion, low noise differential n Fixed Gain of 6dB amplifi er/ADC driver for use in applications from DC to n Low Distortion: 300MHz. The LT6402-6 has been designed for ease of 49dBm OIP3, –85dBc HD3 (20MHz, 2VP-P) use, with minimal support circuitry required. Exceptionally n Low Noise: low input-referred noise and low distortion (with either 18.6dB NF, en = 3.8nV/√Hz (20MHz) single-ended or differential inputs) make the LT6402-6 an n Differential Inputs and Outputs excellent solution for driving high speed 12-bit and 14-bit n Additional Filtered Outputs ADCs. In addition to the normal unfi ltered outputs (+OUT n Adjustable Output Common Mode Voltage and –OUT), the LT6402-6 has a built-in 75MHz differential n DC- or AC-Coupled Operation low pass fi lter and an additional pair of fi ltered outputs n Minimal Support Circuitry Required (+OUTFILTERED, –OUTFILTERED) to reduce external fi l- n Small 0.75mm Profi le 16-Lead 3mm × 3mm QFN tering components when driving high speed ADCs. The Package output common mode voltage is easily set via the VOCM pin, eliminating an output transformer or AC-coupling
APPLICATIONS
capacitors in many applications. n Differential ADC Driver for: The LT6402-6 is designed to meet the demanding require- Imaging ments of communications transceiver applications. It can Communications be used as a differential ADC driver, a general-purpose n Differential Driver/Receiver differential gain block, or in other applications requir- n Single Ended to Differential Conversion ing differential drive. The LT6402-6 can be used in data n Differential to Single Ended Conversion acquisition systems required to function at frequencies n Level Shifting down to DC. n IF Sampling Receivers The LT6402-6 operates on a 5V supply and consumes 30mA. n SAW Filter Interfacing/Buffering It comes in a compact 16-lead 3mm × 3mm QFN package L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. and operates over a –40°C to 85°C temperature range. All other trademarks are the property of their respective owners.
Distortion vs Frequency, Differential Input, No RLOAD TYPICAL APPLICATION
–40 FILTERED OUTPUTS VOUT = 2VP-P 5V –50 0.1μF –60 0.1μF –INB VCC –70 –INA V VCM OCM 10Ω 0.1μF +OUT AIN+ DISTORTION (dBc) –80 HD3 LT6402-6 LTC®2249 10Ω 0.1μF –OUT AIN– –90 +INB IF IN VEE HD2 +INA 64026 TA01a –100 1 10 100 FREQUENCY (MHz) 64026 TA01b 64026fa 1
FEATURES DESCRIPTION
n 300 MHz –3dB Bandwidth The LT®6402-6 is a low distortion, low noise differential n Fixed Gain of 6dB amplifi er/ADC driver for use in applications from DC to n Low Distortion: 300MHz. The LT6402-6 has been designed for ease of 49dBm OIP3, –85dBc HD3 (20MHz, 2VP-P) use, with minimal support circuitry required. Exceptionally n Low Noise: low input-referred noise and low distortion (with either 18.6dB NF, en = 3.8nV/√Hz (20MHz) single-ended or differential inputs) make the LT6402-6 an n Differential Inputs and Outputs excellent solution for driving high speed 12-bit and 14-bit n Additional Filtered Outputs ADCs. In addition to the normal unfi ltered outputs (+OUT n Adjustable Output Common Mode Voltage and –OUT), the LT6402-6 has a built-in 75MHz differential n DC- or AC-Coupled Operation low pass fi lter and an additional pair of fi ltered outputs n Minimal Support Circuitry Required (+OUTFILTERED, –OUTFILTERED) to reduce external fi l- n Small 0.75mm Profi le 16-Lead 3mm × 3mm QFN tering components when driving high speed ADCs. The Package output common mode voltage is easily set via the VOCM pin, eliminating an output transformer or AC-coupling
APPLICATIONS
capacitors in many applications. n Differential ADC Driver for: The LT6402-6 is designed to meet the demanding require- Imaging ments of communications transceiver applications. It can Communications be used as a differential ADC driver, a general-purpose n Differential Driver/Receiver differential gain block, or in other applications requir- n Single Ended to Differential Conversion ing differential drive. The LT6402-6 can be used in data n Differential to Single Ended Conversion acquisition systems required to function at frequencies n Level Shifting down to DC. n IF Sampling Receivers The LT6402-6 operates on a 5V supply and consumes 30mA. n SAW Filter Interfacing/Buffering It comes in a compact 16-lead 3mm × 3mm QFN package L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. and operates over a –40°C to 85°C temperature range. All other trademarks are the property of their respective owners.
Distortion vs Frequency, Differential Input, No RLOAD TYPICAL APPLICATION
–40 FILTERED OUTPUTS VOUT = 2VP-P 5V –50 0.1μF –60 0.1μF –INB VCC –70 –INA V VCM OCM 10Ω 0.1μF +OUT AIN+ DISTORTION (dBc) –80 HD3 LT6402-6 LTC®2249 10Ω 0.1μF –OUT AIN– –90 +INB IF IN VEE HD2 +INA 64026 TA01a –100 1 10 100 FREQUENCY (MHz) 64026 TA01b 64026fa 1
