company blog about Mingjiada Supply ADI Digital To Analog Converter, Supply LTC1668IG 50Msps, 16Bit DAC Converters

Mingjiada Supply ADI Digital To Analog Converter, Supply LTC1668IG 50Msps, 16Bit DAC Converters

LTC1668IG is a 16-bit, 50Msps differential current output DAC. The LTC1668IG is manufactured using a high-performance BiCMOS process and features laser-trimmed thin-film resistors. The combination of an innovative current-steering architecture and a high-performance process results in a DAC with outstanding AC and DC performance.

The LTC1668IG is the first 16-bit DAC on the market to achieve 87dB SFDR (spurious-free dynamic range) at an output signal frequency of 1MHz.

The LTC1668IG operates on ±5V power supplies and can be configured to provide up to 10mA of full-scale output current. The differential current output of these DACs enables single-ended or true differential operation.

The LTC1668IG's –1V to 1V output compliance allows the output to be directly connected to an external resistor to generate a differential output voltage without compromising the converter's linearity. Alternatively, the LTC1668IG can connect the output to the summing node of a high-speed operational amplifier or to a transformer.

The LTC1668IG is a pin-compatible device, available in a 28-pin SSOP package, and fully specified for operation over the industrial temperature range.

LTC1668IG Core Feature Overview
Model: LTC1668IG (industrial temperature range: -40°C to +85°C)
Function: 16-bit, 50 Msps differential current output digital-to-analogue converter (DAC)
Output type: Differential current output (supports AC/DC coupling)
Resolution: 16 bits
Sampling Rate: 50 MSPS (million samples per second)
Interface: Parallel input (compatible with 3V/5V logic)
Supply Voltage: +5V single supply
Key Advantages: High dynamic performance, low noise, low power consumption (typical value: 170mW)
Package: 28-pin SSOP (surface mount)

LTC1668IG Core Features and Technical Highlights
Differential current output architecture
Provides two complementary current outputs, enabling easy conversion to voltage signals via external resistors.
Advantages:
Suppresses common-mode noise, enhancing signal integrity (especially in high-speed, high-precision applications).
Directly drives transformers or differential amplifiers, simplifying communication system design.
50 Msps high-speed conversion capability
Suitable for broadband signal generation applications (e.g., communication baseband, radar, ultrasound imaging), meeting real-time signal processing requirements.
High Dynamic Performance
Spurious-free dynamic range (SFDR): typical value >80dB (at 1MHz output).
Signal-to-noise ratio (SNR): >75dB (at full-scale output).
Suitable for generating high-purity sine waves and multi-carrier modulated signals.
Low-power design
Single +5V power supply, power consumption as low as 170mW (at full speed of 50Msps).
Supports sleep mode (power consumption reduced to 1mW), suitable for portable devices.

Typical application scenarios for LTC1668IG
Wireless communication systems
Base station transmit channel: Generate IQ modulated signals (e.g., 4G/5G intermediate frequency bands).
Software-Defined Radio (SDR): Acts as a high-speed DAC core to enable flexible waveform generation.
Medical Imaging Equipment
Ultrasound Imaging Systems: Drives piezoelectric transducers to generate high-resolution acoustic pulses.
MRI Gradient Control: Generates precise gradient waveforms.
Test and Measurement Instruments
Arbitrary Waveform Generators (AWG): Synthesises complex test signals (e.g., radar pulses, modulated waveforms).
High-speed data acquisition system calibration source.
Defence and Radar
Electronic Countermeasures (ECM): Generates jamming signals.
Phased array radar beamforming.

The LTC1668IG, a classic example of a high-speed, high-precision DAC, combines a 50Msps rate, 16-bit resolution, and differential current output, establishing a broad foundation for applications in communications, medical imaging, and test equipment.

【Mingjiada Electronics】has been supplying ADI (LTC1668IG) 16-bit, 50Msps differential current output DACs. For more information about the LTC1668IG product or to inquire about pricing, please visit the Mingjiada Electronics official website (https://www.integrated-ic.com/) for details.