MAX6126AASA50+T Maxim Integrated Products, MAX6126AASA50+T Datasheet - Page 15

• Manufacturer Part Number: MAX6126AASA50+T
• Description: IC ULTRA-HI V-REF 5.0V 8-SOIC
• Manufacturer: Maxim Integrated Products

Specifications of MAX6126AASA50+T

• Reference Type: Series
• Voltage - Output: 5V
• Tolerance: ±0.02%
• Temperature Coefficient: 5ppm/°C
• Voltage - Input: 5.2 ~ 12.6 V
• Number Of Channels: 1
• Current - Quiescent: 550µA
• Current - Output: 10mA
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Product: Voltage References
• Topology: Series References
• Output Voltage: 5 V
• Initial Accuracy: 0.02 %
• Average Temperature Coefficient (typ): 1 PPM / C
• Series Vref - Input Voltage (max): 13 V
• Shunt Current (max): 10 mA
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Cathode: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

racy is needed. The MAX6126 has the same type of
Kelvin connection to cancel drops in the ground return
line. Connect the load to ground and bring a connection
from GNDS to exactly the same point.
Figure 2 shows a typical circuit providing a precision
current source. The OUTF output provides the bias cur-
rent for the bipolar transistor. OUTS and GNDS sense
the voltage across the resistor and adjust the current
sourced by OUTF accordingly. For even higher preci-
sion, use a MOSFET to eliminate base current errors.
Figure 3 shows a typical circuit providing the reference
for a high-resolution, 16-bit MAX541 D/A converter.
In a data converter application, the reference voltage of
the converter must stay within a certain limit to keep the
error in the data converter smaller than the resolution
limit through the operating temperature range. Figure 4
shows the maximum allowable reference voltage tem-
perature coefficient to keep the conversion error to less
than 1 LSB, as a function of the operating temperature
range (T
parameter. The graph assumes the reference voltage
temperature coefficient as the only parameter affecting
accuracy.
In reality, the absolute static accuracy of a data con-
verter is dependent on the combination of many para-
meters such as integral nonlinearity, differential
nonlinearity, offset error, gain error, as well as voltage
reference changes.
Temperature Range for a 1 LSB Maximum
High-Resolution DAC and Reference from
Temperature Coefficient vs. Operating
MAX
- T
Applications Information
MIN
______________________________________________________________________________________
) with the converter resolution as a
Precision Current Source
Ultra-High-Precision, Ultra-Low-Noise,
a Single Supply
Error
Series Voltage Reference
Figure 2. Precision Current Source
Figure 3. 14-Bit High-Resolution DAC and Positive Reference
from a Single 3V Supply
MAX6126
MAX6126
GND
GND
IN
IN
GNDS
OUTS
OUTF
GNDS
OUTF
OUTS
3V SUPPLY
REF
V
OUT(NOMINAL)
MAX541
R
DAC
GND
V
DD
I
SOURCE
OUT
/ R = I
ANALOG
OUTPUT
SOURCE
15