LT1994
PRODUCTIONLow Noise, Low Distortion Fully Differential Input/Output Amplifier/Driver
- Part Models
- 12
- 1ku List Price
- Starting From $2.01
Part Details
- Fully Differential Input and Output
- Wide Supply Range: 2.375V to 12.6V
- Rail-to-Rail Output Swing
- Low Noise: 3nV/√Hz
- Low Distortion, 2VP-P, 1MHz: –94dBc
- Adjustable Output Common Mode Voltage
- Unity Gain Stable
- Gain-Bandwidth: 70MHz
- Slew Rate: 65V/μs
- Large Output Current: 85mA
- DC Voltage Offset <2mV MAX
- Open-Loop Gain: 100V/mV
- Low Power Shutdown
- 8-Pin MSOP or 3mm × 3mm DFN Package
The LT1994 is a high precision, very low noise, low distortion, fully differential input/output amplifier optimized for 3V, single supply operation. The LT1994’s output common mode voltage is independent of the input common mode voltage, and is adjustable by applying a voltage on the VOCM pin. A separate internal common mode feedback path provides accurate output phase balancing and reduced even-order harmonics. This makes the LT1994 ideal for level shifting ground referenced signals for driving differential input, single supply ADCs.
The LT1994 output can swing rail-to-rail and is capable of sourcing and sinking up to 85mA. In addition to the low distortion characteristics, the LT1994 has a low input referred voltage noise of 3nV/√Hz. This part maintains its performance for supply voltages as low as 2.375V. It draws only 13.3mA of supply current and has a hardware shutdown feature that reduces current consumption to 225μA.
The LT1994 is available in an 8-pin MSOP or 8-pin DFN package.
Applications
- Differential Input A/D Converter Driver
- Single-Ended to Differential Conversion
- Differential Amplifier cation with Common Mode Translation
- Rail-to-Rail Differential Line Driver/Receiver
- Low Voltage, Low Noise, Differential Signal Processing
Documentation
Data Sheet 1
Reliability Data 2
User Guide 2
Technical Articles 1
Product Selector Card 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 |
---|---|---|---|
LT1994CDD#PBF | 8-Lead DFN (3mm x 3mm x 0.75mm w/ EP) | ||
LT1994CDD#TRPBF | 8-Lead DFN (3mm x 3mm x 0.75mm w/ EP) | ||
LT1994CMS8#PBF | 8-Lead MSOP | ||
LT1994CMS8#TRPBF | 8-Lead MSOP | ||
LT1994HDD#PBF | 8-Lead DFN (3mm x 3mm x 0.75mm w/ EP) | ||
LT1994HDD#TRPBF | 8-Lead DFN (3mm x 3mm x 0.75mm w/ EP) | ||
LT1994IDD#PBF | 8-Lead DFN (3mm x 3mm x 0.75mm w/ EP) | ||
LT1994IDD#TRPBF | 8-Lead DFN (3mm x 3mm x 0.75mm w/ EP) | ||
LT1994IMS8#PBF | 8-Lead MSOP | ||
LT1994IMS8#TRPBF | 8-Lead MSOP | ||
LT1994MPDD#PBF | 8-Lead DFN (3mm x 3mm x 0.75mm w/ EP) | ||
LT1994MPDD#TRPBF | 8-Lead DFN (3mm x 3mm x 0.75mm w/ EP) |
Part Models | Product Lifecycle | PCN |
---|---|---|
Oct 11, 2022 - 22_0244 Epoxy Change from Henkel 8290 to 8290A for MSOP Package |
||
LT1994CMS8#PBF | PRODUCTION | |
LT1994CMS8#TRPBF | PRODUCTION | |
LT1994IMS8#PBF | PRODUCTION | |
LT1994IMS8#TRPBF | PRODUCTION | |
Feb 3, 2020 - 20_0128 Laser Top Mark for 8 Lead MSOP Packages Assembled in ADPG and UTAC |
||
LT1994CMS8#PBF | PRODUCTION | |
LT1994CMS8#TRPBF | PRODUCTION | |
LT1994IMS8#PBF | PRODUCTION | |
LT1994IMS8#TRPBF | PRODUCTION |
This is the most up-to-date revision of the Data Sheet.
Tools & Simulations
LTspice 1
Models for the following parts are available in LTspice:
- LT1994
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 ToolADIsimRF
ADIsimRF is an easy-to-use RF signal chain calculator. Cascaded gain, noise, distortion and power consumption can be calculated, plotted and exported for signal chains with up to 50 stages. ADIsimRF also includes an extensive data base of device models for ADI’s RF and mixed signal components.
Open ToolSignal Chain Designer - BETA
Signal Chain Designer is a web-based tool designed to create and simulate complex precision signal chains. See your circuit’s performance before you commit to your PCB: transfer function, noise, power consumption, input range, and DC error. Quickly experiment with different parts and architectures. Signal chains can be exported to LTspice for further analysis.
Open ToolSys-Parameter Models for Keysight Genesys
Sys-Parameter models contain behavioral parameters, such as P1dB, IP3, gain, noise figure and return loss, which describe nonlinear and linear characteristics of a device.
Open ToolLTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.