AS89020 Converter with digital output
4-channel, current input 12-bit Analog-to-Digital Converter (ADC)
特点
- 4 channel, current input analog-to-digital converter (ADC)
- 12-bit digital output
- Each channel is addressable and programmable in 17 levels
- Measurement of positive and negative currents
- Temperature compensation on chip
- Fast SPI serial digital output
优势
- Conversion of 4 sensor signals of photodiodes or other sensors with current signal output
- Each channel separately programmable in 17 stages
- Parallel sampling + MUX + SPI output
- High amplification linearity, no cross talk
- High absolute accuracy without additional sources
- Supply and temperature independet performance
- Low power consumption
产品参数
| Interface | Fast SPI up to 16MHz |
|---|---|
| Programmable | Transimpedance in 17 stages 20kOhm - 102MOhm |
| Sensitivity | up to 2.8 pA/LSB |
| Input Current | 12nA - 12µA |
| Signal Frequencies [kHz] | 3 to 340 |
| Supply Voltage [V] | 2.7 to 3.6 |
| Package | SSOP20 |
| Size [mm] | 8.56 x 5.84 x 1.62 |
| Temperature Range [°C] | -25 to 85 |
| Size [mm] |
综述
The AS89020 is a 12-bit, 4-channel, current input Analog-to-Digital Converter (ADC). It combines current-to-voltage (TIA) and analog-to-digital (AD) conversion, so that 4 separate current output devices (e.g. photodiodes) can be directly connected to its inputs and digitized.
For each of the 4 inputs the AS89020 provides an input amplifier with a track and hold circuit. The outputs of the track and hold stages are serial converted to 12-bit digital words using an analog-to-digital converter (ADC).
Not Recommended for New Designs
ams-OSRAM AG is discontinuing production of this device. Final lifetime buy order must be placed by June 30, 2021. Please contact your local sales representative for further information.
本产品适用于以下应用:
- Industrial automation
- Process control
- Color matching
- Print control
技术文档
| 类别 | 描述 | 语言 | ||
|---|---|---|---|---|
| Datasheet | Document version 3V01 | English |
通知
| 类别 | 描述 | 语言 | ||
|---|---|---|---|---|
| EoL Notification | AS1xxx, AS25xx, AS3xxx, AS73211, AS89020, SL900A, TMD4704 (issued 2020-Dec) | English |
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