MAX6126BASA21+ Maxim Integrated Products, MAX6126BASA21+ Datasheet - Page 15
![IC REF VOLT 2.048V 8-SOIC](/photos/1/39/13902/8-soic_21-0042b_sml.jpg)
MAX6126BASA21+
Manufacturer Part Number
MAX6126BASA21+
Description
IC REF VOLT 2.048V 8-SOIC
Manufacturer
Maxim Integrated Products
Datasheet
1.MAX6126BASA25.pdf
(18 pages)
Specifications of MAX6126BASA21+
Reference Type
Series
Voltage - Output
2.048V
Tolerance
±0.06%
Temperature Coefficient
10ppm/°C
Voltage - Input
2.248 ~ 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
2.048 V
Initial Accuracy
0.06 %
Average Temperature Coefficient (typ)
10 PPM / C
Series Vref - Input Voltage (max)
12.6 V
Series Vref - Input Voltage (min)
2.7 V
Shunt Current (max)
10 mA
Maximum Operating Temperature
+ 125 C
Input Voltage
2.7 V to 12.6 V
Minimum Operating Temperature
- 40 C
Mounting Style
SMD/SMT
Series Vref - Supply Current (max)
725 uA
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