Datasheet LT6604-10 (Analog Devices)
| Manufacturer | Analog Devices |
| Description | Dual Very Low Noise, Differential Amplifier and 10MHz Lowpass Filter |
| Pages / Page | 16 / 1 — FEATURES. DESCRIPTION. APPLICATIONS. TYPICAL APPLICATION. Channel to … |
| File Format / Size | PDF / 208 Kb |
| Document Language | English |
FEATURES. DESCRIPTION. APPLICATIONS. TYPICAL APPLICATION. Channel to Channel Gain Matching, VS = 5V
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LT6604-10 Dual Very Low Noise, Differential Amplifi er and 10MHz Lowpass Filter
FEATURES DESCRIPTION
n Dual Differential Amplifi er with 10MHz Lowpass Filters The LT®6604-10 consists of two matched, fully differential 4th Order Filters amplifi ers, each with a 4th order, 10MHz lowpass fi lter. The Approximates Chebyshev Response fi xed frequency lowpass fi lter approximates a Chebyshev Guaranteed Phase and Gain Matching response. By integrating a fi lter and a differential ampli- Resistor-Programmable Differential Gain fi er, distortion and noise are made exceptionally low. At n 82dB Signal-to-Noise (3V Supply, 2V unity gain, the measured in band signal-to-noise ratio is P-P Output) n Low Distortion, 2V an impressive 82dB. At higher gains, the input referred P-P, 800Ω Load 1MHz: 88dBc 2nd, 97dBc 3rd noise decreases, allowing the part to process smaller 5MHz: 74dBc 2nd, 77dBc 3rd input differential signals without signifi cantly degrading n Specifi ed for Operation with 3V, 5V and ±5V Supplies the signal-to-noise ratio. n Fully Differential Inputs and Outputs Gain and phase are highly matched between the two chan- n Adjustable Output Common Mode Voltage nels. Gain for each channel is independently programmed n Small 4mm × 7mm × 0.75mm QFN Package using two external resistors. The LT6604-10 enables level shifting by providing an adjustable output common mode voltage, making it ideal for directly interfacing to ADCs.
APPLICATIONS
The LT6604-10 is fully specifi ed for 3V operation. The n Dual Differential ADC Driver Plus Filter differential design enables outstanding performance at n Single-Ended to Differential Converter a 2V n P-P signal level for a single 3V supply. See the back Matched, Dual, Differential Filter Stage page of this data sheet for a complete list of related single n Common Mode Translation of Differential Signals and dual differential amplifi ers with integrated 2.5MHz to n High Speed ADC Antialiasing and DAC Smoothing in 20MHz lowpass fi lters. Wireless Infrastructure or Networking Applications n High Speed Test and Measurement Equipment L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. n Medical Imaging All other trademarks are the property of their respective owners.
TYPICAL APPLICATION Channel to Channel Gain Matching, VS = 5V
3V 20 50 TYPICAL UNITS LT6604-10 LTC22xx DUAL ADC V+A 3V 18 TA = 25°C 402Ω GAIN = 1 0.01μF + +INA + –OUTA 50Ω 16 fIN = 10MHz VMIDA – + 14 V 18pF AIN DOUT OCMA +OUTA 50Ω 12 402Ω –INA + – – – 10 V+ V B + 3V 8 402Ω +INB 0.01μF + + –OUTB 50Ω 6 VMIDB – + 4 VOCMB 18pF AIN DOUT 50Ω 402Ω +OUTB 2 –INB + – – – 0 V– –0.15 –0.1 –0.05 0 0.05 0.1 0.15 0.2 0.25 660410 TA01 GAIN MATCH (dB) 660410 TA01b 660410fb 1
FEATURES DESCRIPTION
n Dual Differential Amplifi er with 10MHz Lowpass Filters The LT®6604-10 consists of two matched, fully differential 4th Order Filters amplifi ers, each with a 4th order, 10MHz lowpass fi lter. The Approximates Chebyshev Response fi xed frequency lowpass fi lter approximates a Chebyshev Guaranteed Phase and Gain Matching response. By integrating a fi lter and a differential ampli- Resistor-Programmable Differential Gain fi er, distortion and noise are made exceptionally low. At n 82dB Signal-to-Noise (3V Supply, 2V unity gain, the measured in band signal-to-noise ratio is P-P Output) n Low Distortion, 2V an impressive 82dB. At higher gains, the input referred P-P, 800Ω Load 1MHz: 88dBc 2nd, 97dBc 3rd noise decreases, allowing the part to process smaller 5MHz: 74dBc 2nd, 77dBc 3rd input differential signals without signifi cantly degrading n Specifi ed for Operation with 3V, 5V and ±5V Supplies the signal-to-noise ratio. n Fully Differential Inputs and Outputs Gain and phase are highly matched between the two chan- n Adjustable Output Common Mode Voltage nels. Gain for each channel is independently programmed n Small 4mm × 7mm × 0.75mm QFN Package using two external resistors. The LT6604-10 enables level shifting by providing an adjustable output common mode voltage, making it ideal for directly interfacing to ADCs.
APPLICATIONS
The LT6604-10 is fully specifi ed for 3V operation. The n Dual Differential ADC Driver Plus Filter differential design enables outstanding performance at n Single-Ended to Differential Converter a 2V n P-P signal level for a single 3V supply. See the back Matched, Dual, Differential Filter Stage page of this data sheet for a complete list of related single n Common Mode Translation of Differential Signals and dual differential amplifi ers with integrated 2.5MHz to n High Speed ADC Antialiasing and DAC Smoothing in 20MHz lowpass fi lters. Wireless Infrastructure or Networking Applications n High Speed Test and Measurement Equipment L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. n Medical Imaging All other trademarks are the property of their respective owners.
TYPICAL APPLICATION Channel to Channel Gain Matching, VS = 5V
3V 20 50 TYPICAL UNITS LT6604-10 LTC22xx DUAL ADC V+A 3V 18 TA = 25°C 402Ω GAIN = 1 0.01μF + +INA + –OUTA 50Ω 16 fIN = 10MHz VMIDA – + 14 V 18pF AIN DOUT OCMA +OUTA 50Ω 12 402Ω –INA + – – – 10 V+ V B + 3V 8 402Ω +INB 0.01μF + + –OUTB 50Ω 6 VMIDB – + 4 VOCMB 18pF AIN DOUT 50Ω 402Ω +OUTB 2 –INB + – – – 0 V– –0.15 –0.1 –0.05 0 0.05 0.1 0.15 0.2 0.25 660410 TA01 GAIN MATCH (dB) 660410 TA01b 660410fb 1
