AD7856 Series
5 V Single-Supply, 8-Channel, 14-Bit, 285 kSPS, Serial Sampling ADC
Manufacturer: Analog Devices Inc
Catalog
5 V Single-Supply, 8-Channel, 14-Bit, 285 kSPS, Serial Sampling ADC
| Part | Voltage - Supply, Analog | Configuration | Data Interface | Ratio - S/H:ADC | Package / Case | Package / Case | Package / Case | Operating Temperature [Min] | Operating Temperature [Max] | Sampling Rate (Per Second) | Input Type | Number of Bits | Architecture | Mounting Type | Supplier Device Package | Number of Inputs | Voltage - Supply, Digital | Number of A/D Converters | Reference Type | Package / Case | Package / Case [y] | Package / Case [x] |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Analog Devices Inc AD7856ARSZ-REEL7 | 5 V | MUX-S/H-ADC | SPI | 1:1 | 0.209 in | 5.3 mm | 24-SSOP | -40 °C | 105 ░C | 285 k | Pseudo-Differential, Single Ended | 14 | SAR | Surface Mount | 24-SSOP | 4, 8 | 5 V | 1 | External, Internal | |||
Analog Devices Inc AD7856ANZ | 5 V | MUX-S/H-ADC | SPI | 1:1 | 24-DIP | -40 °C | 105 ░C | 285 k | Pseudo-Differential, Single Ended | 14 | SAR | Through Hole | 24-PDIP | 4, 8 | 5 V | 1 | External, Internal | 0.3 in, 7.62 mm | ||||
Analog Devices Inc AD7856ARZ-REEL7 | 5 V | MUX-S/H-ADC | SPI | 1:1 | 24-SOIC | -40 °C | 105 ░C | 285 k | Pseudo-Differential, Single Ended | 14 | SAR | Surface Mount | 24-SOIC | 4, 8 | 5 V | 1 | External, Internal | 7.5 mm | 0.295 in | |||
Analog Devices Inc AD7856ARZ | 5 V | MUX-S/H-ADC | SPI | 1:1 | 24-SOIC | -40 °C | 105 ░C | 285 k | Pseudo-Differential, Single Ended | 14 | SAR | Surface Mount | 24-SOIC | 4, 8 | 5 V | 1 | External, Internal | 7.5 mm | 0.295 in | |||
Analog Devices Inc AD7856AN | 24-DIP | -40 °C | 105 ░C | 285 k | 14 | Through Hole | 24-PDIP | 2 | 0.3 in, 7.62 mm | |||||||||||||
Analog Devices Inc AD7856KR-REEL7 | 24-SOIC | 0 °C | 105 ░C | 285 k | 14 | Surface Mount | 24-SOIC | 2 | 7.5 mm | 0.295 in | ||||||||||||
Analog Devices Inc AD7856AR | 5 V | MUX-S/H-ADC | SPI | 1:1 | 24-SOIC | -40 °C | 105 ░C | 285 k | Pseudo-Differential, Single Ended | 14 | SAR | Surface Mount | 24-SOIC | 4, 8 | 5 V | 1 | External, Internal | 7.5 mm | 0.295 in | |||
Analog Devices Inc AD7856KRZ | 5 V | MUX-S/H-ADC | SPI | 1:1 | 24-SOIC | 0 °C | 105 ░C | 285 k | Pseudo-Differential, Single Ended | 14 | SAR | Surface Mount | 24-SOIC | 4, 8 | 5 V | 1 | External, Internal | 7.5 mm | 0.295 in |
Key Features
• Single 5 V Supply
• 285 kSPS Throughput Rate
• Self- and System Calibration with Autocalibration on Power-Up
• Eight Single-Ended or Four Pseudo-Differential Inputs
• Low Power: 60 mW Typ
• Automatic Power-Down After Conversion (2.5 µW Typ)
• Flexible Serial Interface: 8051/SPI®/QSPI™/µP Compatible
• 24-Lead DIP, SOIC and SSOP Packages
Description
AI
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 VREFwith 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.