Datasheet LTC6419 (Analog Devices)
| Manufacturer | Analog Devices |
| Description | Dual 10GHz GBW, 1.1nV/√Hz Differential Amplifier/ADC Driver |
| Pages / Page | 24 / 1 — FEATURES. DESCRIPTION. 10GHz Gain-Bandwidth Product. 85dB SFDR at 100MHz, … |
| File Format / Size | PDF / 1.2 Mb |
| Document Language | English |
FEATURES. DESCRIPTION. 10GHz Gain-Bandwidth Product. 85dB SFDR at 100MHz, 2VP-P. 1.1nV/√Hz Input Noise Density
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LTC6419 Dual 10GHz GBW, 1.1nV/√Hz Differential Amplifier/ADC Driver
FEATURES DESCRIPTION
n
10GHz Gain-Bandwidth Product
The LTC®6419 is a dual very high speed, low distortion, n
85dB SFDR at 100MHz, 2VP-P
differential amplifier. Its input common mode range in- n
1.1nV/√Hz Input Noise Density
cludes ground, so that a ground-referenced single-ended n
Channel Separation 95dB at 100MHz
or differential input signal can be DC-coupled, level-shifted, n Input Range Includes Ground and converted to drive an ADC differentially. n External Resistors Set Gain (Min 1V/V) The gain and feedback resistors are external, so that the n 3300V/µs Differential Slew Rate exact gain and frequency response can be tailored to each n 52mA Supply Current (Per Amplifier) application. For example, the amplifier could be externally n 2.7V to 5.25V Supply Voltage Range compensated in a no-overshoot configuration, which is n Fully Differential Input and Output desired in certain time-domain applications. n Adjustable Output Common Mode Voltage n Low Power Shutdown The LTC6419 is stable in a differential gain of 1. This al- n Small 20-Lead 4mm × 3mm × 0.75mm LQFN Package lows for low output noise in applications where gain is not desired. Each amplifier draws 52mA of supply current and has an independent shutdown pin which reduces current
APPLICATIONS
consumption to 100µA per amplifier. n Broadband I/Q Amplifiers The LTC6419 is available in a compact 4mm × 3mm n Dual Differential ADC Driver 20-pin LQFN package and operates over a –40°C to 125°C n High-Speed Data-Acquisition Cards temperature range. n Automated Test Equipment L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Analog n Time Domain Reflectometry Devices, Inc. All other trademarks are the property of their respective owners. n Communications Receivers
TYPICAL APPLICATION DC-Coupled Interface from a Ground-Referenced Single-Ended 1/2 LTC6419 Driving 1/4 LTC2175-14 Input to an LTC2175-14 ADC ADC, fIN = 45MHz, –1dBFS,
1.3pF
fS = 125MHz, 32768-Point FFT
0 VS = 3.3V VIN –10 150Ω 150Ω VOUTDIFF = 1.8V P-P –20 HD2 = –86.8dBc 1.8V HD3 = –86.5dBc 3.3V 39pF –30 SFDR = 86.5dB 33.2Ω 10Ω V –40 DD SNR = 71.8dB – + A + IN –50 VOCM = 0.9V 1/2 LTC6419 1/4 LTC2175-14 ADC –60 33.2Ω 10Ω – –70 + – AIN GND –80 39pF AMPLITUDE (dBFS) –90 150Ω –100 150Ω –110 6419 TA01 –120 0 10 20 30 40 50 60 1.3pF FREQUENCY (MHz) 6419 TA01b 6419fa For more information www.linear.com/LTC6419 1 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Typical Performance Characteristics Pin Functions Applications Information Typical Applications Typical Applications Related Parts
FEATURES DESCRIPTION
n
10GHz Gain-Bandwidth Product
The LTC®6419 is a dual very high speed, low distortion, n
85dB SFDR at 100MHz, 2VP-P
differential amplifier. Its input common mode range in- n
1.1nV/√Hz Input Noise Density
cludes ground, so that a ground-referenced single-ended n
Channel Separation 95dB at 100MHz
or differential input signal can be DC-coupled, level-shifted, n Input Range Includes Ground and converted to drive an ADC differentially. n External Resistors Set Gain (Min 1V/V) The gain and feedback resistors are external, so that the n 3300V/µs Differential Slew Rate exact gain and frequency response can be tailored to each n 52mA Supply Current (Per Amplifier) application. For example, the amplifier could be externally n 2.7V to 5.25V Supply Voltage Range compensated in a no-overshoot configuration, which is n Fully Differential Input and Output desired in certain time-domain applications. n Adjustable Output Common Mode Voltage n Low Power Shutdown The LTC6419 is stable in a differential gain of 1. This al- n Small 20-Lead 4mm × 3mm × 0.75mm LQFN Package lows for low output noise in applications where gain is not desired. Each amplifier draws 52mA of supply current and has an independent shutdown pin which reduces current
APPLICATIONS
consumption to 100µA per amplifier. n Broadband I/Q Amplifiers The LTC6419 is available in a compact 4mm × 3mm n Dual Differential ADC Driver 20-pin LQFN package and operates over a –40°C to 125°C n High-Speed Data-Acquisition Cards temperature range. n Automated Test Equipment L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Analog n Time Domain Reflectometry Devices, Inc. All other trademarks are the property of their respective owners. n Communications Receivers
TYPICAL APPLICATION DC-Coupled Interface from a Ground-Referenced Single-Ended 1/2 LTC6419 Driving 1/4 LTC2175-14 Input to an LTC2175-14 ADC ADC, fIN = 45MHz, –1dBFS,
1.3pF
fS = 125MHz, 32768-Point FFT
0 VS = 3.3V VIN –10 150Ω 150Ω VOUTDIFF = 1.8V P-P –20 HD2 = –86.8dBc 1.8V HD3 = –86.5dBc 3.3V 39pF –30 SFDR = 86.5dB 33.2Ω 10Ω V –40 DD SNR = 71.8dB – + A + IN –50 VOCM = 0.9V 1/2 LTC6419 1/4 LTC2175-14 ADC –60 33.2Ω 10Ω – –70 + – AIN GND –80 39pF AMPLITUDE (dBFS) –90 150Ω –100 150Ω –110 6419 TA01 –120 0 10 20 30 40 50 60 1.3pF FREQUENCY (MHz) 6419 TA01b 6419fa For more information www.linear.com/LTC6419 1 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Typical Performance Characteristics Pin Functions Applications Information Typical Applications Typical Applications Related Parts
