MAX1248
PRODUCTION+2.7V to +5.25V, Low-Power, 4-Channel, Serial, 10-Bit ADCs in QSOP-16
- Part Models
- 8
- 1ku List Price
- Starting From $7.25
Part Details
- 4-Channel Single-Ended or 2-Channel Differential Inputs
- Single +2.7V to +5.25V Operation
- Internal 2.5V Reference (MAX1248)
- Low Power:
- 1.2mA (133ksps, +3V supply)
- 54µA (1ksps, +3V supply)
- 1µA (power-down mode)
- SPI/QSPI/MICROWIRE/TMS320-Compatible 4-Wire Serial Interface
- Software-Configurable Unipolar or Bipolar Inputs
- 16-Pin QSOP Package (same area as 8-pin SO)
The MAX1248/MAX1249 10-bit data-acquisition systems combine a 4-channel multiplexer, high-bandwidth track/hold, and serial interface with high conversion speed and low power consumption. They operate from a single +2.7V to +5.25V supply, and their analog inputs are software configurable for unipolar/bipolar and single-ended/differential operation.
The 4-wire serial interface connects directly to SPI™/ QSPI™ and MICROWIRE™ devices without external logic. A serial strobe output allows direct connection to TMS320-family digital signal processors. The MAX1248/MAX1249 use either the internal clock or an external serial-interface clock to perform successive-approximation analog-to-digital conversions.
The MAX1248 has an internal 2.5V reference, while the MAX1249 requires an external reference. Both parts have a reference-buffer amplifier with a ±1.5% voltage adjustment range.
These devices provide a hard-wired active-low SHDN pin and a software-selectable power-down, and can be programmed to automatically shut down at the end of a conversion. Accessing the serial interface automatically powers up the MAX1248/MAX1249, and the quick turn-on time allows them to be shut down between all conversions. This technique can cut supply current to under 60µA at reduced sampling rates.
The MAX1248/MAX1249 are available in a 16-pin DIP and a very small QSOP that occupies the same board area as an 8-pin SO.
For 8-channel versions of these devices, see the MAX148/MAX149 datasheet.
Applications
- Battery-Powered Applications
- Data Acquisition
- Medical Instruments
- Pen Digitizers
- Portable Data Logging
- System Supervision
Documentation
Data Sheet 1
Reliability Data 1
Design Note 1
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| MAX1248ACEE+ | 16-QSOP-150_MIL | ||
| MAX1248AEEE+ | 16-QSOP-150_MIL | ||
| MAX1248AEEE+T | 16-QSOP-150_MIL | ||
| MAX1248BCEE+ | 16-QSOP-150_MIL | ||
| MAX1248BCEE+T | 16-QSOP-150_MIL | ||
| MAX1248BCPE+ | Plastic Dual-In-Line, Narrow (0.3in) | ||
| MAX1248BEEE+ | 16-QSOP-150_MIL | ||
| MAX1248BEEE+T | 16-QSOP-150_MIL |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Jan 24, 2019 - 1746N ASSEMBLY |
||
| MAX1248AEEE+ | PRODUCTION | |
| MAX1248AEEE+T | PRODUCTION | |
| MAX1248BCEE+ | PRODUCTION | |
| MAX1248BCEE+T | PRODUCTION | |
| MAX1248BEEE+ | PRODUCTION | |
| MAX1248BEEE+T | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Hardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| Multiplexed A/D Converters 7 | ||
| MAX149 | PRODUCTION | +2.7V to +5.25V Low-Power 8-Channel Serial 10-Bit ADCs |
| MAX157 | PRODUCTION | +2.7V, Low-Power, 2-Channel, 108ksps, Serial 10-Bit ADCs in 8-Pin µMAX |
| MAX1246 | PRODUCTION | +2.7V, Low-Power, 4-Channel, Serial 12-Bit ADCs in QSOP-16 |
| MAX1247 | PRODUCTION | +2.7V, Low-Power, 4-Channel, Serial 12-Bit ADCs in QSOP-16 |
| MAX1082 | PRODUCTION | 300ksps/400ksps, Single-Supply, 4-Channel, Serial 10-Bit ADCs with Internal Reference |
| MAX1046 | PRODUCTION | 10-Bit, Multichannel ADCs/DACs with FIFO, Temperature Sensing, and GPIO Ports |
| MAX11619 | PRODUCTION | 10-Bit, 300ksps ADCs with FIFO and Internal Reference |
| Single Channel A/D Converters 1 | ||
| MAX159 | LAST TIME BUY | +2.7V, Low-Power, 2-Channel, 108ksps, Serial 10-Bit ADCs in 8-Pin µMAX |
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