Low-Noise, Precision, +2.5V/+4.096V/+5V Voltage References

General Description

The MAX6225/MAX6241/MAX6250 are low-noise, precision voltage references with extremely low 1ppm/°C temperature coefficients and excellent ±0.02% initial accuracy. These devices feature buried-zener technology for lowest noise performance. Load-regulation specifications are guaranteed for source and sink currents up to 15mA. Excellent line and load regulation and low output impedance at high frequency make them ideal for high-resolution data-conversion systems up to 16 bits.

The MAX6225 is set for 2.500V output, the MAX6241 is set for 4.096V output, and the MAX6250 is set for 5.000V output. All three provide for the option of external trimming and noise reduction.

Applications

High-Resolution Analog-to-Digital and Digital-to-Analog Converters

High-Accuracy Reference Standard

High-Accuracy Industrial and Process Control

Digital Voltmeters

ATE Equipment

Precision Current Sources

Features

♦ Low 1.0ppm/°C Temperature Coefficient

♦ Very Low 1.5µVp-p Noise (0.1Hz to 10Hz)

♦ ±0.02% Initial Accuracy

♦ ±15mA Output Source and Sink Current

♦ Low, 18mW Power Consumption (MAX6225)

♦ Industry-Standard Pinout

♦ Optional Noise Reduction and Voltage Trim

♦ Excellent Transient Response

♦ 8-Pin SO Package Available

♦ Low 20ppm/1000h Long-Term Stability

♦ Stable for All Capacitive Loads

Ordering Information

ABSOLUTE MAXIMUM RATINGS

(Voltages Referenced to GND)

IN..............................................................................-0.3V to +40V

OUT, TRIM ...............................................................-0.3V to +12V

NR ..............................................................................-0.3V to +6V

OUT Short Circuit to GND Duration (V_IN ≤ 12V)..........Continuous

OUT Short Circuit to GND Duration (V_IN ≤ 40V) ....................5sec

OUT Short Circuit to IN Duration (V_IN ≤ 12V) ..............Continuous

Continuous Power Dissipation (T _A = +70°C)

Plastic DIP (derate 9.09mW/°C above +70°C)................727mW

SO (derate 5.88mW/°C above +70°C) ............................471mW

CERDIP (derate 8.00mW/°C above +70°C) ....................640mW

Operating Temperature Ranges

MAX62_ _ _C_ A..................................................... 0°C to +70° C

MAX62_ _ _E_ A..................................................-40°C to +85 ° C

MAX62_ _ _MJA ................................................-55 °C to +125 ° C

Storage Temperature Range ..............................-65 °C to +150° C

Lead Temperature (soldering, 10sec) ............................... +300° C

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

Typical Operating Circuit Pin Configuration

Package Information