The MAX1420 is a 3.3V, 12-bit analog-to-digital converter (ADC) with a fully-differential input, pipelined, 12-stage ADC architecture featuring wideband track-and-hold (T/H) and digital error correction. It is designed for low-power, high dynamic performance applications in imaging and digital communications. The ADC operates from a single 3.3V supply and consumes only 221mW. The fully-differential input stage has a small signal -3dB bandwidth of 400MHz and can be operated with single-ended inputs. The full-scale range of the ADC is set by an internal 2.048V precision bandgap reference. The ADC also features a flexible reference structure that allows for an internal reference or externally applied buffered or unbuffered reference for applications requiring increased accuracy and a different input voltage range. In addition to low operating power, the MAX1420 offers two power-down modes: reference power-down and shutdown mode. In reference power-down mode, the internal bandgap reference is deactivated, resulting in a typical 2mA reduction in supply current. The full shutdown mode is available to maximize power savings during idle periods. The MAX1420 provides parallel, offset binary, CMOS-compatible three-state outputs. It is available in a 7mm x 7mm x 1.4mm, 48-
The MAX1420 analog‑to‑digital converter offers a 12‑bit resolution and up to 60 MHz sampling rate while consuming only about 221 mW typical power. It operates from a single 3.3 V supply and includes an internal 2.048 V precision bandgap reference, a fully‑differential input stage, and two power‑down modes (reference shutdown and full shutdown) for ultra‑low standby consumption.
The device is supplied in a 48‑pin TQFP package (7 mm × 7 mm × 1.4 mm) and is rated for a temperature range of –40 °C to +85 °C. Electrical characteristics include a 400 MHz –3 dB input bandwidth, SNR of 67 dB at 5 MHz and 62 dB at 15 MHz, and a typical analog power dissipation of 221 mW. Detailed timing, functional diagrams, and package drawings are provided in the document.
| Resolution | 12 bits |
|---|---|
| Maximum Sample Rate | 60 MHz |
| Supply Voltage | 3.3 V (single supply) |
| Internal Reference Voltage | 2.048 V |
| Typical Power Dissipation | 221 mW |
| Input Bandwidth (‑3 dB) | 400 MHz |
| SNR at 15 MHz | 62 dB |
| Package | 48‑pin TQFP, 7 mm × 7 mm × 1.4 mm |
The MAX1420 operates from a single 3.3 V supply.
Typical analog power dissipation is 221 mW.
The maximum clock frequency is 60 MHz.