SMIC 0.18um 1-Channel 12-bit 200K 3.3V Multi-Input SAR A
Overview
This analog-to-digital converter (ADC) is a one-channel SAR ADC with multi-input PGA and bandgap. It is devised to replace the sigma-delta ADC used in audio CODEC. The multi inputs refer to Microphone in, FM in and Line in. All inputs have 24dB gain in 16 steps, but for Microphone in, it has an additional 20dB gain boost.
Key Features
- Process: SMIC 0.18μm logic process 1Poly 5Metal
- Analog supply: 2.7-3.6V; Digital supply: 1.8V
- Power down mode: < 1uA
- Line in and FM in: Single-ended analog input
- Microphone in：differential-ended，or single-ended analog input
- Resolution: 12-bit resolution
- DNL: +/-1.5 LSB, INL: +/-3 LSB
- SNR: 67dB @20 ~ 22KHz
- THD: TBD
- Data rate: 200KSPS
- PGA: 0~ 44 dB, 0/20dB gain boost, 0~24dB PGA, 1.6dB steps
Technical Specifications
Foundry, Node
SMIC 0.18um
SMIC
Pre-Silicon:
180nm
EEPROM
,
180nm
G
,
180nm
LL