LTC6409 - 10GHz GBW, 1.1nV/√Hz Differential Amplifier/ADC Driver
The LTC6409 is a very high speed, low distortion, differential amplifier. Its input common mode range includes ground, so that a ground-referenced input signal can be DC-coupled, level-shifted, and converted to drive an ADC differentially.
The gain and feedback resistors are external, so that the exact gain and frequency response can be tailored to each application. For example, the amplifier could be externally compensated in a no-overshoot configuration, which is desired in certain time-domain applications.
The LTC6409 is stable in a differential gain of 1. This allows for a low output noise in applications where gain is not desired. It draws 52mA of supply current and has a hardware shutdown feature which reduces current consumption to 100μA.
The LTC6409 is available in a compact 3mm × 2mm 10‑pin leadless QFN package and operates over a –40°C to 125°C temperature range.
Features
Typical Application  | Applications
Packaging |
| Part Number | Package | Temp | Price(1-99) | Price (1k)* |
|---|---|---|---|---|
| LTC6409CUDB#PBF | 3x2 QFN-10 | C | $6.39 | |
| LTC6409CUDB#TRMPBF | 3x2 QFN-10 | C | $6.34 | $4.55 |
| LTC6409CUDB#TRPBF | 3x2 QFN-10 | C | $4.50 | |
| LTC6409HUDB#PBF | 3x2 QFN-10 | H | $7.96 | |
| LTC6409HUDB#TRMPBF | 3x2 QFN-10 | H | $7.91 | $5.68 |
| LTC6409HUDB#TRPBF | 3x2 QFN-10 | H | $5.63 | |
| LTC6409IUDB#PBF | 3x2 QFN-10 | I | $7.02 | |
| LTC6409IUDB#TRMPBF | 3x2 QFN-10 | I | $6.97 | $5.00 |
| LTC6409IUDB#TRPBF | 3x2 QFN-10 | I | $4.95 |
Demo Boards
| Part Number | Description | Price |
|---|---|---|
| DC1591A | LTC6409 | 10GHz, 1nV/rt(Hz) Differential Amplifier/ADC Driver | $150.00 |
| DC1760A | LTC2261-14 + LTC6409 ADC and Driver Combo Board,DC-100MHz, CMOS Outputs, req DC890 and DC1075 | $200.00 |
| DC1945A | LTC2185 and LTC6409 Combo Board with differential inputs, req DC890, LVDS_XFMR and DC1075 | $200.00 |
| DC2266A | LTC2107 + LTC6409 Demo Board | 16-Bit, 210Msps ADC and Driver Combo Board, DC-100MHz Input, DDR LVDS Outputs, (req DC1371 and DC2219) | $200.00 |
| Part Number | Description | Price |
|---|---|---|
| DC1075A | Clock Divider board | $50.00 |
| DC890B | USB Data Acquisition Controller, for PScope Evaluation Kits (up to 250Mbps, CMOS/LVDS) | $300.00 |
| DC1371B | FMC High-Speed Data Acquisition Board | $1,950.00 |
| DC2219A | Single-Ended to Differential Adaptor Board for High-Speed ADC Demoboards | $50.00 |
