Datasheet LTC6405 (Analog Devices)
| Manufacturer | Analog Devices |
| Description | 2.7GHz, 5V, Low Noise, Rail-to-Rail Input Differential Amplifier/Driver |
| Pages / Page | 26 / 1 — Features. Description. Low Noise: 1.6nV/√Hz RTI. Low Power: 18mA at 5V. … |
| File Format / Size | PDF / 447 Kb |
| Document Language | English |
Features. Description. Low Noise: 1.6nV/√Hz RTI. Low Power: 18mA at 5V. Low Distortion (HD2/HD3):. –82dBc/–65dBc at 50MHz, 2VP-P
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Text Version of Document
LTC6405 2.7GHz, 5V, Low Noise, Rail-to-Rail Input Differential Amplifier/Driver
Features Description
n
Low Noise: 1.6nV/√Hz RTI
The LTC®6405 is a very low noise, low distortion, fully n
Low Power: 18mA at 5V
differential input/output amplifier optimized for 5V, single n
Low Distortion (HD2/HD3):
supply operation. The LTC6405 input common mode range
–82dBc/–65dBc at 50MHz, 2VP-P
is rail-to-rail, while the output common mode voltage is
–97dBc/–91dBc at 25MHz, 2VP-P
independently adjustable by applying a voltage on the n
Rail-to-Rail Differential Input
VOCM pin. This makes the LTC6405 ideal for level shifting n 4.5V to 5.25V Supply Voltage Range signals with a wide common mode range for driving 12-bit n Fully Differential Input and Output to 16-bit single supply, differential input ADCs. n Adjustable Output Common Mode Voltage A 2.7GHz gain-bandwidth product results in 65dB linearity n 800MHz –3dB Bandwidth with AV = 1 for 50MHz input signals. The LTC6405 is unity gain stable n Gain-Bandwidth Product: 2.7GHz and the closed-loop bandwidth extends from DC to 800MHz. n Low Power Shutdown The output voltage swing extends from near-ground to n Available in 8-Lead MSOP and 16-Lead 4V, to be compatible with a wide range of ADC converter 3mm × 3mm × 0.75mm QFN Packages input requirements. The LTC6405 draws only 18mA, and
applications
has a hardware shutdown feature which reduces current consumption to 400µA. n Differential Input ADC Driver The LTC6405 is available in a compact 3mm × 3mm 16-pin n Single-Ended to Differential Conversion leadless QFN package, as well as an 8-lead MSOP package, n Level-Shifting Ground-Referenced Signals and operates over a –40°C to 85°C temperature range. n Level-Shifting VCC-Referenced Signals L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear n High-Linearity Direct Conversion Receivers Technology Corporation. All other trademarks are the property of their respective owners.
typical application Single-Ended Input to Differential Output Input Noise Density vs Input with Common Mode Level Shifting Common Mode Voltage
2VP-P 4 4 INPUT CURRENT NOISE DENSIT 1.8pF VS = 5V 0V NOISE MEASURED AT f = 1MHz / Hz) VS 50Ω 196Ω 200Ω 3 3 Y (nV 5V i 0.1µF n 61.9Ω SIGNAL 1V 2 2 P-P GENERATOR + 2.5V en VOCM TAGE NOISE DENSIT Y (pA/ LTC6405UD 1 1 0.01µF – 2.5V Hz) 1V INPUT VOL P-P 200Ω 0 0 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 1.8pF 221Ω INPUT COMMON MODE VOLTAGE (V) 6405 TA01b 6405 TA01 6405fb For more information www.linear.com/6405 1
Features Description
n
Low Noise: 1.6nV/√Hz RTI
The LTC®6405 is a very low noise, low distortion, fully n
Low Power: 18mA at 5V
differential input/output amplifier optimized for 5V, single n
Low Distortion (HD2/HD3):
supply operation. The LTC6405 input common mode range
–82dBc/–65dBc at 50MHz, 2VP-P
is rail-to-rail, while the output common mode voltage is
–97dBc/–91dBc at 25MHz, 2VP-P
independently adjustable by applying a voltage on the n
Rail-to-Rail Differential Input
VOCM pin. This makes the LTC6405 ideal for level shifting n 4.5V to 5.25V Supply Voltage Range signals with a wide common mode range for driving 12-bit n Fully Differential Input and Output to 16-bit single supply, differential input ADCs. n Adjustable Output Common Mode Voltage A 2.7GHz gain-bandwidth product results in 65dB linearity n 800MHz –3dB Bandwidth with AV = 1 for 50MHz input signals. The LTC6405 is unity gain stable n Gain-Bandwidth Product: 2.7GHz and the closed-loop bandwidth extends from DC to 800MHz. n Low Power Shutdown The output voltage swing extends from near-ground to n Available in 8-Lead MSOP and 16-Lead 4V, to be compatible with a wide range of ADC converter 3mm × 3mm × 0.75mm QFN Packages input requirements. The LTC6405 draws only 18mA, and
applications
has a hardware shutdown feature which reduces current consumption to 400µA. n Differential Input ADC Driver The LTC6405 is available in a compact 3mm × 3mm 16-pin n Single-Ended to Differential Conversion leadless QFN package, as well as an 8-lead MSOP package, n Level-Shifting Ground-Referenced Signals and operates over a –40°C to 85°C temperature range. n Level-Shifting VCC-Referenced Signals L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear n High-Linearity Direct Conversion Receivers Technology Corporation. All other trademarks are the property of their respective owners.
typical application Single-Ended Input to Differential Output Input Noise Density vs Input with Common Mode Level Shifting Common Mode Voltage
2VP-P 4 4 INPUT CURRENT NOISE DENSIT 1.8pF VS = 5V 0V NOISE MEASURED AT f = 1MHz / Hz) VS 50Ω 196Ω 200Ω 3 3 Y (nV 5V i 0.1µF n 61.9Ω SIGNAL 1V 2 2 P-P GENERATOR + 2.5V en VOCM TAGE NOISE DENSIT Y (pA/ LTC6405UD 1 1 0.01µF – 2.5V Hz) 1V INPUT VOL P-P 200Ω 0 0 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 1.8pF 221Ω INPUT COMMON MODE VOLTAGE (V) 6405 TA01b 6405 TA01 6405fb For more information www.linear.com/6405 1
