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The AD7856 is a high speed, low power, 14-bit Analog-to-Digital Converter (ADC) that operates from a single 5 V power supply. The ADC powers up with a set of default conditions at which time it can be operated as a read only ADC. The ADC contains self-calibration and system calibration options to ensure accurate operation over time and temperature; and it has a number of power-down options for low power applications. The AD7856 is capable of 285 kHz throughput rate. The input track-and-hold acquires a signal in 500 ns and features a pseudo-differential sampling scheme. The AD7856 voltage range is 0 to VREF with both straight binary and 2s complement output coding. Input signal range is to the supply and the part is capable of converting full power signals to 20 MHz. CMOS construction ensures low power dissipation of typically 5.4 mW for normal operation and 3.6 µW in power-down mode. The part is available in 24-pin, 0.3 inch-wide dual-in-line package (DIP), 24-lead small outline (SOIC) and 24-lead small shrink outline (SSOP) packages.
| Resolution (Bits) | 14bit |
| Sampling Rate | 285kSPS |
| Supply Voltage Type | Single |
| Supply Voltage Min | 4.75V |
| Supply Voltage Max | 5.25V |
| ADC / DAC Case Style | DIP |
| No. of Pins | 24Pins |
| Input Channel Type | Single Ended |
| Data Interface | Serial, SPI |
| Operating Temperature Min | -40°C |
| Operating Temperature Max | 85°C |
| Packaging | Each |
| Product Range | Octal 14-Bit SAR ADCs |
| Automotive Qualification Standard | - |
| RoHS Phthalates Compliant | Yes |
| MSL | MSL 3 - 168 hours |
| SVHC | No SVHC (07-Jul-2017) |
| A/D / D/A Features | CMOS, Microprocessor Compatible, Serial O/P, Track and Hold, Voltage O/P |
| Base Number | 7856 |
| Conversion Time | 3.5µs |
| IC Case Style | DIP |
| IC Generic Number | 7856 |
| Linearity Error | 2% |
| Linearity Error ADC / DAC + | 2LSB |
| Linearity Error ADC / DAC - | 2LSB |
| Logic Function Number | 7856 |
| No. of Bits | 14bit |
| No. of Channels | 8Channels |
| Operating Temperature Range | -40°C to +85°C |
| Power Dissipation Ptot Max | 450mW |
| Supply Current | 12mA |
| Supply Voltage Range | 4.75V to 5.25V |
| Termination Type | Through Hole |
| input_capacitance | 20.0 pF |
| logic_type | SAR |
| reach_svhc_compliance | No SVHC |
| mil_spec | No |
| power_dissipation | 89.2 mW |
| supply_voltage_dc | 4.75 V (min) |
| lead_free_status | Contains Lead |
| mounting_style | Through Hole |
| packaging | Tube, Bulk |
| case_package | DIP |
| sample_rate | 285 kHz |
| supply_current | 12.0 mA |
| lifecycle_status | Active |
| input_impedance | 1.00 Ω |
| rohs_status | Compliant |
| pin_count | 24 |
| number_of_bits | 14 |
| resolution_bits | 14.0 |
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