| Part Number | AD1555APRL | AD1555APZRL | 
|---|---|---|
| Manufacturer | Analog Devices Inc. | Analog Devices Inc. | 
| Category | Data Acquisition - Analog to Digital Converters (ADC) | Data Acquisition - Analog to Digital Converters (ADC) | 
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| Product Status | Obsolete | Obsolete | 
| Number of Bits | 24 | 24 | 
| Sampling Rate (Per Second) | 256k | 256k | 
| Number of Inputs | 2 | 2 | 
| Input Type | Differential | Differential | 
| Data Interface | SPI | SPI | 
| Configuration | MUX-PGA-ADC | MUX-PGA-ADC | 
| Ratio - S/H:ADC | - | - | 
| Number of A/D Converters | 1 | 1 | 
| Architecture | Sigma-Delta | Sigma-Delta | 
| Reference Type | External, Internal | External, Internal | 
| Voltage - Supply, Analog | ±5V | ±5V | 
| Voltage - Supply, Digital | 5V | 5V | 
| Features | PGA | PGA | 
| Operating Temperature | 0°C ~ 85°C | 0°C ~ 85°C | 
| Package / Case | 28-LCC (J-Lead) | 28-LCC (J-Lead) | 
| Supplier Device Package | 28-PLCC (11.51x11.51) | 28-PLCC (11.51x11.51) | 
| Mounting Type | Surface Mount | Surface Mount |