The MAX1449 is a 3.3V, 10-bit analog-to-digital converter (ADC) with fully differential input, pipelined 10-stage ADC architecture with wideband track-and-hold (T/H), and digital error correction incorporating a fully differential signal path. The ADC is optimized for low-power, high-dynamic performance in imaging and digital communications applications. The converter operates from a single 2.7V to 3.6V supply, consuming only 186mW while delivering a 58.5dB (typ) signal-to-noise ratio (SNR) at a 20MHz input frequency. The fully differential input stage has a -3dB 400MHz bandwidth and may be operated with single-ended inputs. In addition to low operating power, the MAX1449 features a 5µA power-down mode for idle periods. An internal 2.048V precision bandgap reference is used to set the ADC’s full-scale range. A flexible reference structure allows the user to supply a buffered, direct, or externally derived reference for applications requiring increased accuracy or a different input voltage range. Lower speed, pin-compatible versions of the MAX1449 are also available. Refer to the MAX1444 data sheet for a 40Msps version, the MAX1446 data sheet for a 60Msps version, and the MAX1448 data sheet for 80Msps. The MAX1449 has parallel, offset binary, CMOS-com- patible, three-state outputs that can be operated from 1.7V to 3.6V to allow flexible interfacing. The device is available in a 5mm x 5mm 32-pin TQFP package and is specified over the extended i
The MAX1449 is a 10‑bit analog‑to‑digital converter optimized for low‑power, high‑dynamic‑performance applications such as ultrasound imaging, CCD imaging, and digital set‑top boxes. It uses a pipelined 10‑stage architecture with a fully differential input stage, a wide‑band track‑and‑hold, and digital error correction. The device operates from a single 2.7 V to 3.6 V supply and includes a 2.048 V precision bandgap reference.
Typical specifications include a 105 Msps sampling rate, 58.5 dB SNR at 20 MHz, 72 dB SFDR at 20 MHz, and a -3 dB input bandwidth of 400 MHz. The MAX1449 is offered in a 32‑pin TQFP package (5 mm × 5 mm) and is rated for an industrial temperature range of –40 °C to +85 °C. Power consumption is 62 mA in normal operation and 5 µA in shutdown mode.
| Resolution | 10 Bits |
|---|---|
| Maximum Sampling Rate | 105 Msps |
| Supply Voltage | 3.3 V (typ) to 3.6 V |
| Power Consumption (Normal) | 62 mA |
| Power Consumption (Shutdown) | 5 µA |
| Input Bandwidth (-3 dB) | 400 MHz |
| Signal‑to‑Noise Ratio | 58.5 dB at 20 MHz |
| Spurious‑Free Dynamic Range | 72 dB at 20 MHz |
| Package | 32‑Pin TQFP, 5 mm × 5 mm |
| Operating Temperature Range | -40 °C to +85 °C |
| Internal Reference Voltage | 2.048 V |
| Output Type | CMOS‑compatible three‑state |
The MAX1449 can sample at up to 105 Msps (105 MHz).
It operates from a single 2.7 V to 3.6 V supply, typically 3.3 V.
Yes, it has an internal 2.048 V precision bandgap reference.
Typical normal‑operation current draw is 62 mA.