Datasheet LTC6400-14 (Analog Devices)
| Manufacturer | Analog Devices |
| Description | 2.4GHz Low Noise, Low Distortion Differential ADC Driver for 300MHz IF |
| Pages / Page | 16 / 1 — FEATURES. DESCRIPTION. 2.4GHz –3dB Bandwidth. Fixed Gain of 5V/V (14dB). … |
| File Format / Size | PDF / 236 Kb |
| Document Language | English |
FEATURES. DESCRIPTION. 2.4GHz –3dB Bandwidth. Fixed Gain of 5V/V (14dB). –97dBc IMD3 at 70MHz (Equivalent OIP3 = 52.4dBm)
Model Line for this Datasheet
Text Version of Document
LTC6400-14 2.4GHz Low Noise, Low Distortion Differential ADC Driver for 300MHz IF
FEATURES DESCRIPTION
n
2.4GHz –3dB Bandwidth
The LTC®6400-14 is a high-speed differential amplifi er n
Fixed Gain of 5V/V (14dB)
targeted at processing signals from DC to 300MHz. The n
–97dBc IMD3 at 70MHz (Equivalent OIP3 = 52.4dBm)
part has been specifi cally designed to drive 12-, 14- and n
–66dBc IMD3 at 300MHz (Equivalent OIP3 = 36.9dBm)
16-bit ADCs with low noise and low distortion, but can also n 1.1nV/√Hz Internal Op Amp Noise be used as a general-purpose broadband gain block. n 2.5nV/√Hz Total Input Noise The LTC6400-14 is easy to use, with minimal support n 7.5dB Noise Figure circuitry required. The output common mode voltage is n Differential Inputs and Outputs set using an external pin, independent of the inputs, which n 200Ω Input Impedance eliminates the need for transformers or AC-coupling ca- n 2.85V to 3.5V Supply Voltage pacitors in many applications. The gain is internally fi xed n 85mA Supply Current (255mW) at 14dB (5V/V). n 1V to 1.6V Output Common Mode Voltage, Adjustable The LTC6400-14 saves space and power compared to n DC- or AC-Coupled Operation alternative solutions using IF gain blocks and transformers. n Max Differential Output Swing 4.8V The LTC6400-14 is packaged in a compact 16-lead 3mm P-P × n Small 16-Lead 3mm × 3mm × 0.75mm QFN Package 3mm QFN package and operates over the – 40°C to 85°C temperature range.
APPLICATIONS
L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. n Differential ADC Driver n Differential Driver/Receiver n Single Ended to Differential Conversion n IF Sampling Receivers n SAW Filter Interfacing
TYPICAL APPLICATION Equivalent Output IP3 vs Single-Ended to Differential ADC Driver Frequency
70 3.3V 3.3V (NOTE 7) 60 C2 C1 CF2 0.1μF 1000pF 33pF 50 C3 V+ 40 RS1 RS3 0.1μF 15Ω 10Ω VDD V +IN +OUT AIN+ 30 IN R1 C4 L1 CF1 OUTPUT IP3 (dBm) 68.5Ω LTC6400-14 LTC2208 20 0.1μF RS2 24nH 33pF RS4 15Ω 10Ω –IN –OUT AIN– 10 V VCM R2 OCM CF3 29Ω COILCRAFT V– 33pF LTC2208 0 0603CS 130Msps 0 50 100 150 200 250 300 1.25V 16-Bit ADC FREQUENCY (MHz) 64014 TA01a 640020 TA01b C5 R3 0.1μF 100Ω 640014fb 1
FEATURES DESCRIPTION
n
2.4GHz –3dB Bandwidth
The LTC®6400-14 is a high-speed differential amplifi er n
Fixed Gain of 5V/V (14dB)
targeted at processing signals from DC to 300MHz. The n
–97dBc IMD3 at 70MHz (Equivalent OIP3 = 52.4dBm)
part has been specifi cally designed to drive 12-, 14- and n
–66dBc IMD3 at 300MHz (Equivalent OIP3 = 36.9dBm)
16-bit ADCs with low noise and low distortion, but can also n 1.1nV/√Hz Internal Op Amp Noise be used as a general-purpose broadband gain block. n 2.5nV/√Hz Total Input Noise The LTC6400-14 is easy to use, with minimal support n 7.5dB Noise Figure circuitry required. The output common mode voltage is n Differential Inputs and Outputs set using an external pin, independent of the inputs, which n 200Ω Input Impedance eliminates the need for transformers or AC-coupling ca- n 2.85V to 3.5V Supply Voltage pacitors in many applications. The gain is internally fi xed n 85mA Supply Current (255mW) at 14dB (5V/V). n 1V to 1.6V Output Common Mode Voltage, Adjustable The LTC6400-14 saves space and power compared to n DC- or AC-Coupled Operation alternative solutions using IF gain blocks and transformers. n Max Differential Output Swing 4.8V The LTC6400-14 is packaged in a compact 16-lead 3mm P-P × n Small 16-Lead 3mm × 3mm × 0.75mm QFN Package 3mm QFN package and operates over the – 40°C to 85°C temperature range.
APPLICATIONS
L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. n Differential ADC Driver n Differential Driver/Receiver n Single Ended to Differential Conversion n IF Sampling Receivers n SAW Filter Interfacing
TYPICAL APPLICATION Equivalent Output IP3 vs Single-Ended to Differential ADC Driver Frequency
70 3.3V 3.3V (NOTE 7) 60 C2 C1 CF2 0.1μF 1000pF 33pF 50 C3 V+ 40 RS1 RS3 0.1μF 15Ω 10Ω VDD V +IN +OUT AIN+ 30 IN R1 C4 L1 CF1 OUTPUT IP3 (dBm) 68.5Ω LTC6400-14 LTC2208 20 0.1μF RS2 24nH 33pF RS4 15Ω 10Ω –IN –OUT AIN– 10 V VCM R2 OCM CF3 29Ω COILCRAFT V– 33pF LTC2208 0 0603CS 130Msps 0 50 100 150 200 250 300 1.25V 16-Bit ADC FREQUENCY (MHz) 64014 TA01a 640020 TA01b C5 R3 0.1μF 100Ω 640014fb 1
