The MAX1226/MAX1228/MAX1230 are serial 12-bit analog-to-digital converters (ADCs) with an internal reference and an internal temperature sensor. 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 MAX1230 has 16 input channels, the MAX1228 has 12 input channels, and the MAX1226 has 8 input channels. All input channels are configurable for single-ended or differential inputs in unipolar or bipolar mode. All three devices operate from a +5V supply and contain a 10MHz SPI™/QSPI™/MICROWIRE™-compatible serial port. The MAX1230 is available in 28-pin 5mm x 5mm thin QFN with exposed pad and 24-pin QSOP packages. The MAX1226/MAX1228 are only available in QSOP packages. All three devices are specified over the extended -40°C to +85°C temperature range.
The MAX1226, MAX1228, and MAX1230 are 12‑bit serial analog‑to‑digital converters (ADCs) that operate from a +5 V supply and include an on‑chip FIFO, internal reference, and temperature sensor. They support up to 300 ksps sampling using an external clock and offer configurable single‑ended or differential inputs in unipolar or bipolar mode.
These devices are offered in various packages: the MAX1230 in 28‑pin thin QFN and 24‑pin QSOP, while the MAX1226 and MAX1228 are available only in QSOP packages. They are specified for an extended temperature range of –40 °C to +85 °C and feature low power consumption (1.9 mA at 300 ksps).
| Resolution | 12 bits |
|---|---|
| Maximum Sampling Rate | 300 ksps (external clock) |
| Input Channels | MAX1230: 16, MAX1228: 12, MAX1226: 8 |
| Supply Voltage | +5 V |
| Internal Reference Voltage | 4.096 V |
| Power Consumption | 1.9 mA at 300 ksps |
| Operating Temperature Range | -40 °C to +85 °C |
| FIFO Depth | 16‑entry |
The devices can sample up to 300 ksps when using an external clock.
The MAX1230 has 16 channels, the MAX1228 has 12 channels, and the MAX1226 has 8 channels.
All three devices operate from a +5 V supply.
The internal reference voltage is 4.096 V.