20b-linear 100MS/s DAC (Digital/Analog Converter) with 98dB SNR in 300kHz
Key Features
- Implementation technology: X-FAB 180nm SOI (XT018) 5+1 Metal, Double-MiM Cap for high linearity and low temp. coeff.
- Architecture: digital oversampling Sigma-Delta Modulator with 38 current-steering cells and 2stage analog RC reconstruction filtering with two fully differential Voltage Amplifiers
- Power Supply: 1.8Vdd analog & digital core, 5Vdd analog power output
- 20bit 10MS/s digital input interpolated (10x, 20x) to 100MS/s as oversampling Sigma-Delta Modulator input
- 3 different digital scrambler/randomizer implemented: Dynamic Element Matching (DEM), Data Weighted Averaging (DWA)
- fully differential 2-stage analog signal path with out-of-band noise filtering (> 1,25MHz)
Block Diagram
Technical Specifications
Foundry, Node
X-FAB 180nm SOI (XT018)
Related IPs
- 95 dB of SNR, Pure logic stereo audio DAC with patented PLL-less feature
- DDR2/DDR3/DDR3L/LPDDR/LPDDR2/LPDDR3 6 in one combo IO with auto calibration - 40nm LL
- Up to 105 dB of SNR, 24-bit mono CODEC with PDM to PWM transmodulator DAC and embedded regulator
- Up to 105 dB of SNR, 24-bit mono CODEC with PDM to PWM transmodulator DAC and embedded regulaor
- Up to 105 dB of SNR, 24-bit mono CODEC with PDM to PWM transmodulator DAC and embedded regulator
- Up to 105 dB of SNR, 24-bit stereo CODEC with PDM to PWM transmodulator DAC and embedded regulator