The MAX1197 is a 3V, dual, 8-bit analog-to-digital converter (ADC) featuring fully differential wideband track-and-hold (T/H) inputs, driving two ADCs. The MAX1197 is optimized for low-power, small size, and high-dynamic performance for applications in imaging, instrumentation, and digital communications. This ADC operates from a single 2.7V to 3.6V supply, consuming only 120mW while delivering a typical signal-to-noise and distortion (SINAD) of 48.5dB at an input frequency of 30MHz and a sampling rate of 60Msps. The T/H-driven input stages incorporate 400MHz (-3dB) input amplifiers. The converters may also be operated with single-ended inputs. In addition to low operating power, the MAX1197 features a 3mA sleep mode as well as a 0.1µA power-down mode to conserve power during idle periods. An internal 2.048V precision bandgap reference sets the full-scale range of the ADC. A flexible reference structure allows the use of this internal or an externally applied reference, if desired, for applications requiring increased accuracy or a different input voltage range. The MAX1197 features parallel, CMOS-compatible three-state outputs. The digital output format can be set to two’s complement or straight offset binary through a single control pin. The device provides for a separate output power supply of 1.7V to 3.6V for flexible interfacing with various logic families. The MAX1197 is available in a 7mm x 7mm, 48-pin TQFP package, and is specified for
The MAX1197 is a dual, 8‑bit analog‑to‑digital converter that operates from a single 2.7 V to 3.6 V supply. It features fully differential wideband track‑and‑hold inputs, internal 2.048 V bandgap reference, and CMOS‑compatible three‑state parallel outputs. The device is offered in a 48‑pin TQFP package and is rated for the extended industrial temperature range (‑40 °C to +85 °C).
Key specifications include a 60 MHz maximum clock frequency, 400 MHz –3 dB input bandwidth, 48.5 dB SINAD at 30 MHz, and low power consumption (120 mW normal, 9 mW sleep, 0.3 µW shutdown). The datasheet provides absolute maximum ratings, detailed electrical characteristics, timing diagrams, typical operating curves, and pin‑compatible upgrade options.
| Resolution | 8 bits |
|---|---|
| Supply Voltage Range | 2.7 V to 3.6 V |
| Power Consumption (Normal) | 120 mW |
| Power Consumption (Sleep) | 9 mW |
| Power Consumption (Shutdown) | 0.3 µW |
| Differential Input Voltage Range | ±1 V p‑p |
| Internal Reference Voltage | 2.048 V |
The device operates from a single 2.7 V to 3.6 V supply.
It includes a 3 mA sleep mode and a 0.1 µA power‑down mode to conserve energy when idle.
It is available in a 48‑pin TQFP package (7 mm × 7 mm).