MAX19538

Obsolete

12-Bit, 95Msps, 3.3V ADC

Data Sheet (Rev. 0) Product Selection Table

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Overview

Direct IF Sampling Up to 400MHz
Excellent Dynamic Performance
- 70.9dB/68.4dB SNR at f_IN = 3MHz/175MHz
- 89.0dBc/76.2dBc SFDR at f_IN = 3MHz/175MHz
- -71.5dBFS Small-Signal Noise Floor
3.3V Low-Power Operation
- 465mW (Single-Ended Clock Mode)
- 492mW (Differential Clock Mode)
- 63µW (Power-Down Mode)
Fully Differential or Single-Ended Analog Input
Adjustable Full-Scale Analog Input Range: ±0.35V to ±1.10V
Common-Mode Reference
CMOS-Compatible Outputs in Two's Complement or Gray Code
Data-Valid Indicator Simplifies Digital Design
Data Out-of-Range Indicator
Miniature 6mm x 6mm x 0.8mm 40-Pin Thin QFN Package with Exposed Paddle
Evaluation Kit Available (Order MAX1211EVKIT)

The MAX19538 is a 3.3V, 12-bit, 95Msps analog-to-digital converter (ADC) featuring a fully differential wideband track-and-hold (T/H) input amplifier, driving a low-noise internal quantizer. The analog input accepts single-ended or differential signals. The MAX19538 is optimized for low power, small size, and high dynamic performance. Excellent dynamic performance is maintained from baseband to input frequencies of 175MHz and beyond, making the MAX19538 ideal for intermediate frequency (IF) sampling applications.

Powered from a single 3.3V supply, the MAX19538 consumes only 492mW while delivering a typical 68.4dB signal-to-noise ratio (SNR) performance at a 175MHz input frequency. In addition to low operating power, the MAX19538 features a 63µW power-down mode to conserve power during idle periods.

A flexible reference structure allows the MAX19538 to use the internal 2.048V bandgap reference or accept an externally applied reference. The reference structure allows the full-scale analog input range to be adjusted from ±0.35V to ±1.10V. The MAX19538 provides a common-mode reference to simplify design and reduce external component count in differential analog input circuits.

The MAX19538 supports either a single-ended or differential input clock drive. The internal clock duty-cycle equalizer accepts a wide range of clock duty cycles.

Analog-to-digital conversion results are available through a 12-bit, parallel, CMOS-compatible output bus. The digital output format is pin selectable to be either two's complement or Gray code. A data-valid indicator eliminates external components that are normally required for reliable digital interfacing. A separate digital power input accepts a wide 1.7V to 3.6V supply allowing the MAX19538 to interface with various logic levels.

The MAX19538 is available in a 6mm x 6mm x 0.8mm, 40-pin thin QFN package with exposed paddle (EP), and is specified for the extended industrial (-40°C to +85°C) temperature range.

Applications

Cellular, Point-to-Point Microwave, HFC
IF and Baseband Communication Receivers: Cellular, Point-to-Point Microwave, HFC, WLAN
Low-Power Data Acquisition
Medical Imaging Including Positron Emission Tomography (PET)
Portable Instrumentation
Video Imaging

Documentation

Data Sheet 1

MAX19538: 12-Bit, 95Msps, 3.3V ADC Data Sheet (Rev.0) 11/22/2004

Reliability Data 1

MAX19538 Reliability Data 01/12/2023

This is the most up-to-date revision of the Data Sheet.

Software Resources

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Hardware Ecosystem

Parts	Product Life Cycle	Description
Analog to Digital Converters (ADCs) 8
MAX1209	Obsolete	12-Bit, 80Msps, 3.3V IF-Sampling ADC
MAX1206	Obsolete	12-Bit, 40Msps ADC
MAX1207	Obsolete	12-Bit, 65Msps ADC
MAX1208	Obsolete	12-Bit, 80Msps, 3.3V ADC

MAX1211	Obsolete	12-Bit, 65Msps, IF Sampling ADC
MAX12553	Obsolete	14-Bit, 65Msps, 3.3V ADC
MAX12554	Obsolete	14-Bit, 80Msps, 3.3V ADC
MAX12555	PRODUCTION	14-Bit, 95Msps, 3.3V ADC

Evaluation Kits

Evaluation Kit for the MAX1211, MAX1206, MAX1207, MAX1208, MAX1209, and MAX19538

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Features and Benefits

Up to 65Msps Sampling Rate with the MAX1211
Low Voltage and Power Operation
Fully Differential or Single-Ended Signal Input Configuration
Differential or Single-Ended Clock Configuration
On-Board Clock-Shaping Circuit with Variable Duty Cycle
Also Evaluates MAX1206-MAX1209 and MAX19538
Fully Assembled and Tested

Product Details

The MAX1211 evaluation kit (EV kit) is a fully assembled and tested circuit board that contains all the components for evaluating the MAX1211, MAX1206-MAX1209, and MAX19538 12-bit, analog-to-digital converters (ADCs). The MAX1211 accepts differential or single-ended analog input signals. The EV kit allows for evaluation of each ADC with both types of signals from one single-ended analog signal source. The digital output produced by the ADC can be easily captured with a user-provided high-speed logic analyzer or data-acquisition system. The EV kit operates from 2.0V and 3.3V power supplies. It includes circuitry that generates a differential clock signal from an AC signal provided by the user. The EV kit comes with the MAX1211 installed. Contact the factory for free samples of the pin-compatible MAX1206-MAX1209 or MAX19538 to evaluate these parts.