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Data Converters 
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Analog-to-Digital Converters
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MAX11637
12-Bit, 300ksps ADCs with Differential Track/Hold, and Internal Reference
Complete Family of Low-Cost, 12-Bit, 4-/8-Channel ADCs with Internal Reference, FIFO, and SPI Interface
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Key Features
Applications/Uses
Parametric specs for Precision ADCs (< 5Msps)
| Resolution (bits) (ADC) | 12 |
| # Input Channels | 8 |
| Conv. Rate (ksps) (max) | 300 |
| Data Bus | SPI |
| ADC Architecture | SAR |
| Diff/S.E. Input | Both |
| Internal VREF (V) (nominal) | 2.5 |
| External VREF (V) (min) | 0 |
| External VREF (V) (max) | 3.6 |
| Unipolar VIN (V) (max) | 2.5 |
| Bipolar VIN (±V) (max) | 1.25 |
| INL (±LSB) | 1 |
| Package/Pins | QSOP/16 |
| Budgetary Price (See Notes) | 3.6 |
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Simplified Block Diagram
Technical Docs
| Data Sheet | 12-Bit, 300ksps ADCs with Differential Track/Hold, and Internal Reference | Sep 27, 2011 | |
| Tutorial | Overview of Sensor Signal Paths |
Support & Training
Search our knowledge base for answers to your technical questions.
Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .
Parameters
Parametric specs for Precision ADCs (<u><</u> 5Msps)
| Resolution (bits) (ADC) | 12 |
| # Input Channels | 8 |
| Conv. Rate (ksps) (max) | 300 |
| Data Bus | SPI |
| ADC Architecture | SAR |
| Diff/S.E. Input | Both |
| Internal VREF (V) (nominal) | 2.5 |
| External VREF (V) (min) | 0 |
| External VREF (V) (max) | 3.6 |
| Unipolar VIN (V) (max) | 2.5 |
| Bipolar VIN (±V) (max) | 1.25 |
| INL (±LSB) | 1 |
| Package/Pins | QSOP/16 |
| Budgetary Price (See Notes) | 3.6 |
Key Features
- Analog Multiplexer with True Differential Track/Hold
- 8-/4-Channel Single Ended
- 4-/2-Channel True Differential
- Unipolar or Bipolar Inputs
- Single Supply
- 2.7V to 3.6V (MAX11635/MAX11637)
- 4.75V to 5.25V (MAX11634/MAX11636)
- External Reference: 1V to VDD
- 16-Entry First-In/First-Out (FIFO)
- Scan Mode, Internal Averaging, and Internal Clock
- Accuracy: ±1 LSB INL, ±1 LSB DNL, No Missing Codes Over Temperature
- 10MHz 3-Wire SPI-/QSPI-/MICROWIRE-Compatible Interface
- Small 16-Pin QSOP Package
Applications/Uses
- Data Logging
- Data-Acquisition Systems
- Industrial Control Systems
- Instrumentation
- Patient Monitoring
- System Supervision
Description
The MAX11634–MAX11637 are serial 12-bit analog-to-digital converters (ADCs) with an internal reference and true differential track/hold. These devices feature on-chip FIFO, scan mode, internal clock mode, internal averaging, and AutoShutdown™. The maximum sampling rate is 300ksps using an external clock. The MAX11636/MAX11637 have 8 input channels and the MAX11634/ MAX11635 have 4 input channels. These four devices operate from either a +3V supply or a +5V supply, and contain a 10MHz SPI™-/QSPI™-/MICROWIRE™-compatible serial port.
The MAX11634–MAX11637 are available in a 16-pin QSOP package. All four devices are specified over the extended -40°C to +85°C temperature range.
The MAX11634–MAX11637 are available in a 16-pin QSOP package. All four devices are specified over the extended -40°C to +85°C temperature range.
Technical Docs
| Data Sheet | 12-Bit, 300ksps ADCs with Differential Track/Hold, and Internal Reference | Sep 27, 2011 | |
| Tutorial | Overview of Sensor Signal Paths |
Support & Training
Search our knowledge base for answers to your technical questions.
Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .
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