Features and Benefits
- Fully Differential Input and Output
- Low Noise: 1.5nV/√Hz RTI
- Very Low Distortion:
- LTC6404-1 (2VP-P , 10MHz): –91dBc
- LTC6404-2 (2VP-P , 10MHz): –96dBc
- LTC6404-4 (2VP-P , 10MHz): –101dBc
- Closed-Loop –3dB Bandwidth: 600MHz
- Slew Rate: 1200V/μs (LTC6404-4)
- Adjustable Output Common Mode Voltage
- Rail-to-Rail Output Swing
- Input Range Extends to Ground
- Large Output Current: 85mA (Typ)
- DC Voltage Offset < 2mV (Max)
- Low Power Shutdown
- Tiny 3mm × 3mm × 0.75mm 16-Pin QFN Package
The LTC6404 is a family of AC precision, very low noise, low distortion, fully differential input/output amplifiers optimized for 3V, single supply operation.
The LTC6404-1 is unity-gain stable. The LTC6404-2 is designed for closed-loop gains greater than or equal to 2V/V. The LTC6404-4 is designed for closed-loop gains greater than or equal to 4V/V. The LTC6404 closed-loop bandwidth extends from DC to 600MHz. In addition to the normal unﬁltered outputs (OUT+ and OUT–), the LTC6404 has a built-in 88.5MHz differential single-pole lowpass ﬁlter and an additional pair of ﬁltered outputs (OUTF+, OUTF–). An input referred voltage noise of 1.5nV/√Hz make the LTC6404 able to drive state-of-the-art 16-/18-bit ADCs while operating on the same supply voltage, saving system cost and power. The LTC6404 is characterized, and maintains its performance for supplies as low as 2.7V and can operate on supplies up to 5.25V. It draws only 27.3mA, and has a hardware shutdown feature which reduces cur- rent consumption to 250μA.
The LTC6404 family is available in a compact 3mm × 3mm 16-pin leadless QFN package and operates over a –40°C to 125°C temperature range.
- Differential Input A/D Converter Driver
- Single-Ended to Differential Conversion/Amplification
- Common Mode Level Translation
- Low Voltage, Low Noise, Signal Processing
Product Lifecycle Recommended for New Designs
This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.
Evaluation Kits (7)
DC1147A-A: Demo Board for the LTC6404 600MHz, Low Noise, High Precision Fully Differential Input/Output Ampliﬁer/Driver
DC1058A-D: Demo Board for the LTC2207 16-Bit, 105Msps ADC and LTC6404 600MHz, Low Noise, High Precision Fully Differential Input/Output Ampliﬁer/Driver.
DC1058A-C: Demo Board for LTC2207 16-Bit, 105Msps ADC and LTC6404 600MHz, Low Noise, High Precision Fully Differential Input/Output Ampliﬁer/Driver.
DC1058A-B: Demo Board for the LTC2207 16-Bit, 105Msps ADC and LTC6404 600MHz, Low Noise, High Precision Fully Differential Input/Output Ampliﬁer/Driver.
Demonstration circuit 2623A features the LTC6404-1 amplifier. The DC2623A includes two of these amplifiers and is designed to drive the inputs of the DC2290 demo board. The DC2290 features the LTC2387 18-bit, 15Msps high speed SAR ADC. The linearity and low noise of the LTC6404-1 make it an ideal candidate to drive the LTC2387 at frequencies above 1MHz.
Note: The DC2623A is configured to provide a voltage gain of 4 from either a single-ended source or a differential one.
DC1147A-B: Demo Board for the LTC6404 600MHz, Low Noise, High Precision Fully Differential Input/Output Ampliﬁer/Driver
Documentation & Resources
R532 Reliability Data3/26/2018
High Speed Amplifiers/ADC Drivers4/29/2015
88dB SFDR @ 100MHz6/27/2011
Tools & Simulations
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LTC6404 Companion Parts
Recommended Related Parts
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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.