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Technical Specifications
Parameters and characteristics for this part
| Specification | AD7685CRMZ |
|---|---|
| Architecture | SAR |
| Configuration | S/H-ADC |
| Data Interface | DSP, SPI |
| Input Type | Pseudo-Differential |
| Mounting Type | Surface Mount |
| Number of A/D Converters | 1 |
| Number of Bits | 16 |
| Number of Inputs | 1 |
| Operating Temperature [Max] | 85 °C |
| Operating Temperature [Min] | -40 °C |
| Package / Case | 10-MSOP, 10-TFSOP |
| Package / Case [x] | 3 mm |
| Package / Case [x] | 0.118 in |
| Ratio - S/H:ADC | 1:1 |
| Reference Type | External |
| Sampling Rate (Per Second) | 250 k |
| Supplier Device Package | 10-MSOP |
| Voltage - Supply, Analog [Max] | 5.5 V |
| Voltage - Supply, Analog [Min] | 2.3 V |
| Voltage - Supply, Digital [Max] | 5.5 V |
| Voltage - Supply, Digital [Min] | 2.3 V |
AD7685 Series
16-Bit, 250kSPS PulSAR®ADC in MSOP/QFN
| Part | Architecture | Number of Bits | Supplier Device Package | Operating Temperature [Max] | Operating Temperature [Min] | Voltage - Supply, Analog [Max] | Voltage - Supply, Analog [Min] | Reference Type | Input Type | Number of Inputs | Ratio - S/H:ADC | Package / Case | Configuration | Mounting Type | Voltage - Supply, Digital [Max] | Voltage - Supply, Digital [Min] | Number of A/D Converters | Sampling Rate (Per Second) | Data Interface | Package / Case [x] | Package / Case [x] | Supplied Contents | Power (Typ) @ Conditions | Utilized IC / Part | Input Range |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 Analog Devices | SAR | 16 | 10-LFCSP-WD (3x3) | 85 °C | -40 °C | 5.5 V | 2.3 V | External | Pseudo-Differential | 1 | 1:1 | 10-VFDFN Exposed Pad CSP | S/H-ADC | Surface Mount | 5.5 V | 2.3 V | 1 | 250 k | DSP SPI | ||||||
Analog Devices | 10-LFCSP-WD (3x3) | 10-VFDFN Exposed Pad CSP | Surface Mount | ||||||||||||||||||||||
Analog Devices | SAR | 16 | 10-MSOP | 85 °C | -40 °C | 5.5 V | 2.3 V | External | Pseudo-Differential | 1 | 1:1 | 10-MSOP 10-TFSOP | S/H-ADC | Surface Mount | 5.5 V | 2.3 V | 1 | 250 k | DSP SPI | 3 mm | 0.118 in | ||||
Analog Devices | SAR | 16 | 10-LFCSP-WD (3x3) | 85 °C | -40 °C | 5.5 V | 2.3 V | External | Pseudo-Differential | 1 | 1:1 | 10-VFDFN Exposed Pad CSP | S/H-ADC | Surface Mount | 5.5 V | 2.3 V | 1 | 250 k | DSP SPI | ||||||
Analog Devices | SAR | 16 | 10-LFCSP-WD (3x3) | 85 °C | -40 °C | 5.5 V | 2.3 V | External | Pseudo-Differential | 1 | 1:1 | 10-VFDFN Exposed Pad CSP | S/H-ADC | Surface Mount | 5.5 V | 2.3 V | 1 | 250 k | DSP SPI | ||||||
Analog Devices | SAR | 16 | 10-MSOP | 85 °C | -40 °C | 5.5 V | 2.3 V | External | Pseudo-Differential | 1 | 1:1 | 10-MSOP 10-TFSOP | S/H-ADC | Surface Mount | 5.5 V | 2.3 V | 1 | 250 k | DSP SPI | 3 mm | 0.118 in | ||||
Analog Devices | SAR | 16 | 10-MSOP | 85 °C | -40 °C | 5.5 V | 2.3 V | External | Pseudo-Differential | 1 | 1:1 | 10-MSOP 10-TFSOP | S/H-ADC | Surface Mount | 5.5 V | 2.3 V | 1 | 250 k | DSP SPI | 3 mm | 0.118 in | ||||
Analog Devices | SAR | 16 | 10-MSOP | 85 °C | -40 °C | 5.5 V | 2.3 V | External | Pseudo-Differential | 1 | 1:1 | 10-MSOP 10-TFSOP | S/H-ADC | Surface Mount | 5.5 V | 2.3 V | 1 | 250 k | DSP SPI | 3 mm | 0.118 in | ||||
 Analog Devices | SAR | 16 | 10-MSOP | 85 °C | -40 °C | 5.5 V | 2.3 V | External | Pseudo-Differential | 1 | 1:1 | 10-MSOP 10-TFSOP | S/H-ADC | Surface Mount | 5.5 V | 2.3 V | 1 | 250 k | DSP SPI | 3 mm | 0.118 in | ||||
 Analog Devices | 16 | 1 | 250 k | DSP MICROWIRE™ QSPI™ Serial SPI™ | Board(s) | 10 mW | AD7685 | ±VREF |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Tube | 1 | $ 30.62 | |
| 10 | $ 22.89 | |||
| 25 | $ 20.91 | |||
| 100 | $ 18.70 | |||
| 250 | $ 17.84 | |||
Description
General part information
AD7685 Series
The AD7685 is a 16-bit, charge redistribution successive approximation, analog-to-digital converter (ADC) that operates from a single power supply, VDD, between 2.3 V to 5.5 V. It contains a low power, high speed, 16-bit sampling ADC with no missing codes, an internal conversion clock, and a versatile serial interface port. The part also contains a low noise, wide bandwidth, short aperture delay, track-and-hold circuit. On the CNV rising edge, it samples an analog input IN+ between 0 V to REF with respect to a ground sense IN−. The reference voltage, REF, is applied externally and can be set up to the supply voltage.Power dissipation scales linearly with throughput.The SPI-compatible serial interface also features the ability, using the SDI input, to daisy chain several ADCs on a single 3-wire bus or provides an optional BUSY indicator. It is compatible with 1.8 V, 2.5 V, 3 V, or 5 V logic using the separate supply VIO.The AD7685 is housed in a 10-lead MSOP or a 10-lead QFN (LFCSP) with operation specified from −40°C to +85°C.APPLICATIONSBattery-powered equipmentMedical instrumentsMobile communicationsPersonal digital assistants (PDAs)Data acquisitionInstrumentationProcess controls
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