ADA4950-1
RECOMMENDED FOR NEW DESIGNSLow Power Selectable Gain Differential ADC Driver, G = 1, 2, 3
- Part Models
- 2
- 1ku List Price
- Starting From $3.52
Part Details
- High performance at low power
- High speed
-3 dB bandwidth of 750 MHz, G = 1
0.1 dB flatness to 210 MHz, VOUT, dm = 2 V p-p, RL, dm = 200 Ω
Slew rate: 2900 V/µs, 25% to 75%
Fast 0.1% settling time of 9 ns - Low power: 9.5 mA per amplifier
- Low harmonic distortion
108 dB SFDR @ 10 MHz
98 dB SFDR @ 20 MHz - Low output voltage noise: 9.2 nV/√Hz, G = 1, RTO
- ±0.2 mV typical input offset voltage
- Selectable differential gains of 1, 2, and 3
- Differential-to-differential or single-ended-to-differential operation
- Adjustable output common-mode voltage
- Input common-mode range shifted down by one VBE
- Wide supply range: +3 V to ±5 V
- Available in 16-lead and 24-lead LFCSP packages
The ADA4950-1/ADA4950-2 are gain-selectable versions of the ADA4932-1/ADA4932-2 with on-chip feedback and gain resistors with on-chip feedback and gain resistors. It is an ideal choice for driving high performance ADCs as a single-ended-to-differential or differential-to-differential amplifier. The output common-mode voltage is user adjustable by means of an internal common-mode feedback loop, allowing the ADA4950-x output to match the input of the ADC. The internal feedback loop also provides exceptional output balance as well as suppression of even-order harmonic distortion products.
Differential gain configurations of 1, 2, and 3 are easily realized with internal feedback networks that are connected externally to set the closed-loop gain of the amplifier.
The ADA4950-1/ADA4950-2 are fabricated using the Analog Devices, Inc., proprietary silicon-germanium (SiGe) complementary bipolar process, enabling them to achieve low levels of distortion and noise at low power consumption. The low offset and excellent dynamic performance of the ADA4950-x make it well suited for a wide variety of data acquisition and signal processing applications.
The ADA4950-x is available in a Pb-free, 3 mm × 3 mm, 16-lead LFCSP (ADA4950-1, single) or a Pb-free 4 mm × 4 mm, 24-lead LFCSP (ADA4950-2, dual). The pinout has been optimized to facilitate PCB layout and minimize distortion. The ADA4950-1/ADA4950-2 are specified to operate over the -40°C to +105°C temperature range; both operate on supplies from +3 V to ±5 V.
ApplicationsDocumentation
Data Sheet 1
User Guide 1
Application Note 6
Tutorial 3
Analog Dialogue 3
Rarely Asked Question Page 3
Webcast 1
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| ADA4950-1YCPZ-R7 | 16-Lead LFCSP (3mm x 3mm w/ EP) | ||
| ADA4950-1YCPZ-RL | 16-Lead LFCSP (3mm x 3mm w/ EP) |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Feb 13, 2014 - 14_0038 Conversion of 3x3mm body Size LFCSP Package Outlines from Punch to Sawn and Transfer of Assembly Site to Amkor Philippines. |
||
| ADA4950-1YCPZ-R7 | PRODUCTION | |
| ADA4950-1YCPZ-RL | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Tools & Simulations
ADI DiffAmpCalc™
ADI's new ADI DiffAmpCalc™ is a free, downloadable calculator for designing differential amplifier circuits. The tool is easy to use and features an interactive user interface to quickly get you up and running.
Open ToolSPICE Model 1
Evaluation Kits
ADA4950-1 Evaluation Board