具有 2:1 多路复用器的 2.7V 至 5.5V 16 位 500kSPS 串行 ADC
APPLICATIONS
| Resolution (Bits) | 16 |
| Number of input channels | 2 |
| Sample rate (Max) (kSPS) | 500 |
| Interface type | SPI |
| Architecture | SAR |
| Input type | Single-Ended |
| Multi-channel configuration | Multiplexed |
| Rating | Catalog |
| Reference mode | Ext |
| Input range (Max) (V) | 5.5 |
| Input range (Min) (V) | 0 |
| Features | Daisy-Chainable, Oscillator |
| Operating temperature range (C) | -40 to 85 |
| Power consumption (Typ) (mW) | 10.6 |
| Analog voltage AVDD (Min) (V) | 2.7 |
| SNR (dB) | 91 |
| Analog voltage AVDD (Max) (V) | 5.5 |
| INL (Max) (+/-LSB) | 2 |
| Digital supply (Min) (V) | 1.65 |
| Digital supply (Max) (V) | 5.5 |
- 2.7-V to 5.5-V Analog Supply, Low Power:
- 10.6 mW (500 kHz, +VA = 2.7 V,
+VBD = 1.8 V)
- 10.6 mW (500 kHz, +VA = 2.7 V,
- 500-kHz Sampling Rate
- Excellent DC Performance
- ±1.5 LSB Typ, ±2 LSB Max INL
- ±0.6 LSB Typ, ±1 LSB Max DNL
- 16-Bit NMC Over Temperature
- ±0.5 mV Max Offset Error at 2.7 V
- ±1 mV Max Offset Error at 5 V
- Excellent AC Performance at fI = 10 kHz with 91 dB SNR, 100 dB SFDR, –96 dB THD
- Built-In Conversion Clock (CCLK)
- 1.65 V to 1.5×(+VA) I/O Supply
- SPI/DSP Compatible Serial
- SCLK up to 50 MHz
- Comprehensive Power-Down Modes:
- Deep Power-Down
- Nap Power-Down
- Auto Nap Power-Down
- Unipolar Input Range: 0 V to VREF
- Software Reset
- Global CONVST (Independent of CS)
- Programmable Status/Polarity EOC/INT
- 16-Pin 4×4 QFN or 16-Pin TSSOP Packages
- Multi-Chip Daisy Chain Mode
- Programmable TAG Bit Output
- Auto/Manual Channel Select Mode
- Communications
- Transducer Interface
- Medical Instruments
- Magnetometers
- Industrial Process Control
- Data Acquisition Systems
- Automatic Test Equipment
The ADS8327 is a low power, 16-bit, 500-kSPS analog-to-digital converter with a unipolar input. The device includes a 16-bit capacitor-based SAR A/D converter with inherent sample and hold.
The ADS8328 is based on the same core and includes a 2-to-1 input MUX with programmable option of TAG bit output. Both the ADS8327 and ADS8328 offer a high-speed, wide voltage serial interface and are capable of chain mode operation when multiple converters are used.
These converters are available in a 16-lead TSSOP or 4×4 QFN packages and are fully specified for operation over the industrial –40°C to +85°C temperature range.
