Datasheet LT6600-10 (Analog Devices)
| Manufacturer | Analog Devices |
| Description | Very Low Noise, Differential Amplifier and 10MHz Lowpass Filter |
| Pages / Page | 16 / 1 — FEATURES. DESCRIPTION. APPLICATIONS. TYPICAL APPLICATION (S8 pin numbers … |
| File Format / Size | PDF / 204 Kb |
| Document Language | English |
FEATURES. DESCRIPTION. APPLICATIONS. TYPICAL APPLICATION (S8 pin numbers shown). An 8192 Point FFT Spectrum
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LT6600-10 Very Low Noise, Differential Amplifi er and 10MHz Lowpass Filter
FEATURES DESCRIPTION
n Programmable Differential Gain via Two External The LT®6600-10 combines a fully differential amplifi er with a Resistors 4th order 10MHz lowpass fi lter approximating a Chebyshev n Adjustable Output Common Mode Voltage frequency response. Most differential amplifi ers require n Operates and Specifi ed with 3V, 5V, ±5V Supplies many precision external components to tailor gain and n 0.5dB Ripple 4th Order Lowpass Filter with 10MHz bandwidth. In contrast, with the LT6600-10, two external Cutoff resistors program differential gain, and the fi lter’s 10MHz n 82dB S/N with 3V Supply and 2VP-P Output cutoff frequency and passband ripple are internally set. n Low Distortion, 2VP-P , 800Ω Load The LT6600-10 also provides the necessary level shifting 1MHz: 88dBc 2nd, 97dBc 3rd to set its output common mode voltage to accommodate 5MHz: 74dBc 2nd, 77dBc 3rd the reference voltage requirements of A/Ds. n Fully Differential Inputs and Outputs Using a proprietary internal architecture, the LT6600-10 n Compatible with Popular Differential Amplifi er Pinouts integrates an antialiasing fi lter and a differential ampli- n SO-8 and DFN-12 Packages fi er/driver without compromising distortion or low noise
APPLICATIONS
performance. At unity gain the measured in band signal- to-noise ratio is an impressive 82dB. At higher gains the n High Speed ADC Antialiasing and DAC Smoothing in input referred noise decreases so the part can process Networking or Cellular Base Station Applications smaller input differential signals without signifi cantly n High Speed Test and Measurement Equipment degrading the output signal-to-noise ratio. n Medical Imaging The LT6600-10 also features low voltage operation. The n Drop-In Replacement for Differential Amplifi ers differential design provides outstanding performance for L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. a 2VP-P signal level while the part operates with a single 3V supply. For similar devices with other cutoff frequencies, refer to the LT6600-20, LT6600-15, LT6600-5 and LT6600-2.5.
TYPICAL APPLICATION (S8 pin numbers shown) An 8192 Point FFT Spectrum
0 INPUT IS A 4.7MHz SINEWAVE LT6600-10 –10 2VP-P 5V –20 fSAMPLE = 66MHz 0.1μF 5V –30 RIN –40 402Ω 3 1 49.9Ω – V+ –50 4 7 + + –60 VMID 18pF A 2 IN LTC1748 DOUT –70 0.01μF 49.9Ω VOCM FREQUENCY (dB) 8 – – –80 V 5 IN + V R CM V– IN 6 –90 402Ω –100 1μF GAIN = 402Ω/R –110 IN 0 4 8 12 16 20 24 28 32 6600 TA01a FREQUENCY (MHz) 6600 TA01b 66001fe 1
FEATURES DESCRIPTION
n Programmable Differential Gain via Two External The LT®6600-10 combines a fully differential amplifi er with a Resistors 4th order 10MHz lowpass fi lter approximating a Chebyshev n Adjustable Output Common Mode Voltage frequency response. Most differential amplifi ers require n Operates and Specifi ed with 3V, 5V, ±5V Supplies many precision external components to tailor gain and n 0.5dB Ripple 4th Order Lowpass Filter with 10MHz bandwidth. In contrast, with the LT6600-10, two external Cutoff resistors program differential gain, and the fi lter’s 10MHz n 82dB S/N with 3V Supply and 2VP-P Output cutoff frequency and passband ripple are internally set. n Low Distortion, 2VP-P , 800Ω Load The LT6600-10 also provides the necessary level shifting 1MHz: 88dBc 2nd, 97dBc 3rd to set its output common mode voltage to accommodate 5MHz: 74dBc 2nd, 77dBc 3rd the reference voltage requirements of A/Ds. n Fully Differential Inputs and Outputs Using a proprietary internal architecture, the LT6600-10 n Compatible with Popular Differential Amplifi er Pinouts integrates an antialiasing fi lter and a differential ampli- n SO-8 and DFN-12 Packages fi er/driver without compromising distortion or low noise
APPLICATIONS
performance. At unity gain the measured in band signal- to-noise ratio is an impressive 82dB. At higher gains the n High Speed ADC Antialiasing and DAC Smoothing in input referred noise decreases so the part can process Networking or Cellular Base Station Applications smaller input differential signals without signifi cantly n High Speed Test and Measurement Equipment degrading the output signal-to-noise ratio. n Medical Imaging The LT6600-10 also features low voltage operation. The n Drop-In Replacement for Differential Amplifi ers differential design provides outstanding performance for L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. a 2VP-P signal level while the part operates with a single 3V supply. For similar devices with other cutoff frequencies, refer to the LT6600-20, LT6600-15, LT6600-5 and LT6600-2.5.
TYPICAL APPLICATION (S8 pin numbers shown) An 8192 Point FFT Spectrum
0 INPUT IS A 4.7MHz SINEWAVE LT6600-10 –10 2VP-P 5V –20 fSAMPLE = 66MHz 0.1μF 5V –30 RIN –40 402Ω 3 1 49.9Ω – V+ –50 4 7 + + –60 VMID 18pF A 2 IN LTC1748 DOUT –70 0.01μF 49.9Ω VOCM FREQUENCY (dB) 8 – – –80 V 5 IN + V R CM V– IN 6 –90 402Ω –100 1μF GAIN = 402Ω/R –110 IN 0 4 8 12 16 20 24 28 32 6600 TA01a FREQUENCY (MHz) 6600 TA01b 66001fe 1
