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| Part Number | AD1556AS | AD1556ASZ | 
|---|---|---|
| Manufacturer | Analog Devices Inc. | Analog Devices Inc. | 
| Product Status | Obsolete | Active | 
| Number of Bits | 24 | 24 | 
| Sampling Rate (Per Second) | 256k | 16k | 
| Number of Inputs | - | 2 | 
| Input Type | - | Single Ended | 
| Data Interface | - | SPI | 
| Configuration | - | MUX-PGA-ADC | 
| Ratio - S/H:ADC | - | 1:1 | 
| Number of A/D Converters | 1 | 1 | 
| Architecture | - | Sigma-Delta | 
| Reference Type | - | External | 
| Voltage - Supply, Analog | - | 2.85V ~ 5.25V | 
| Voltage - Supply, Digital | - | 2.97V ~ 5.25V | 
| Features | - | - | 
| Operating Temperature | -55°C ~ 85°C | -55°C ~ 85°C | 
| Package / Case | 44-QFP | 44-QFP | 
| Supplier Device Package | 44-MQFP (10x10) | 44-MQFP (10x10) | 
| Mounting Type | Surface Mount | Surface Mount |