MAX6226 Voltage Reference Datasheet

MAX6226 Datasheet, PDF, Equivalent


Part Number

MAX6226

Description

Series Voltage Reference

Manufacture

Maxim Integrated

Total Page 11 Pages
Datasheet
Download MAX6226 Datasheet


MAX6226
Click here for production status of specific part numbers.
MAX6226
Ultra-High-Precision, Ultra-Low-Noise,
Series Voltage Reference
General Description
The MAX6226 is an ultra-low-noise, high-precision, low-
dropout voltage reference. This family of voltage references
feature curvature-correction circuitry and high-stability,
laser-trimmed, thin-film resistors that result in 5ppm/°C
(max) temperature coefficients and an excellent ±0.02%
(max) initial accuracy. The proprietary low-noise reference
architecture produces a low flicker noise of 1.45μVP-P and
wideband noise as low as 75nV/√Hz (2.5V output) without
the increased supply current usually found in low-noise
references. Improve wideband noise to 45nV/√Hz and AC
power-supply rejection by adding a 0.1μF capacitor at the
noise reduction pin. The MAX6226 series mode reference
operates from a wide 2.7V to 12.6V supply voltage range
and load-regulation specifications are guaranteed to be
less than 0.25Ω and 0.05Ω for sink and source currents up
to 10mA, respectively. These devices are available over the
automotive temperature range of -40°C to +125°C.
The MAX6226 typically draws 380μA of supply current
and the output voltage is 2.5V. The MAX6226 also feature
dropout voltages as low as 200mV. Unlike conventional
shunt-mode (two-terminal) references that waste supply
current and require an external resistor, the MAX6226
offers supply current that is virtually independent of
supply voltage and does not require an external resistor. The
MAX6226 is stable with 0.1μF to 10μF of load capacitance,
and is available in an 8-pin ceramic package.
Benefits and Features
● 8-pin Hermetically Sealed Ceramic Package
Reduces System Board Space
Ultra-Low 1.45μVP-P Noise (0.1Hz to 10Hz, 2.5V Output)
Ultra-Low 5ppm/°C (Max) Temperature Coefficient
● ±0.02% (Max) Initial Accuracy
Wide (VOUT + 200mV) to 12.6V Supply Voltage Range
Low 200mV (Max) Dropout Voltage
380μA Quiescent Supply Current
● 10mA Sink/Source-Current Capability
● Stable with CLOAD = 0.1μF to 10μF
Low 11ppm/1000hr Long-Term Drift
0.05Ω (Max) Load Regulation
25μV/V (Max) Line Regulation
Force and Sense Outputs for Remote Sensing
Applications
High-Resolution A/D and D/A Converters
● ATE Equipment
● High-Accuracy Reference Standard
● Precision Current Sources
Digital Voltmeters
● High-Accuracy Industrial and Process Control
Ordering Information appears at end of data sheet.
Typical Operating Circuit
(VOUT + 200mV) TO 12.6V INPUT
*
NR
*
IN
OUTF
MAX6226 OUTS
GND
*OPTIONAL.
REFERENCE
OUTPUT
LOAD
LONG-TERM STABILITY vs. TIME
20
(MAX6226ALA25+)
toc16
15 THREE TYPICAL UNITS
10
5
0
-5
0 200 400 600 800 1000
DURATION (HOURS)
19-100454; Rev 4; 12/19

MAX6226
MAX6226
Ultra-High-Precision, Ultra-Low-Noise,
Series Voltage Reference
Absolute Maximum Ratings
(All voltages referenced to GND)
IN ............................................................................-0.3V to +13V
OUTF, OUTS, NR...... -0.3V to the lesser of (VIN + 0.3V) or +6V
Output Short Circuit to GND or IN......................................... 60s
Continuous Power Dissipation (TA = +70°C)
8-Pin LCC (derate 17.79mW/°C above +70°C).......1423.5mW
Operating Temperature Range.......................... -40°C to +125°C
Junction Temperature.......................................................+150°C
Storage Temperature Range............................. -65°C to +150°C
Lead Temperature (soldering, 10s).................................. +300°C
Soldering Temperature (reflow)........................................+260°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.
Package Information
LCC
PACKAGE CODE
L8+2
Outline Number
21-100289
Land Pattern Number
90-100097
Thermal Resistance, Four-Layer Board:
Junction to Ambient (θJA)
Junction to Case (θJC)
56.19°C/W
8.11°C/W
For the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages. Note that a “+”,
“#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing
pertains to the package regardless of RoHS status.
Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer board.
For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial.
www.maximintegrated.com
Maxim Integrated 2


Features Click here for production status of spec ific part numbers. MAX6226 Ultra-High- Precision, Ultra-Low-Noise, Series Volt age Reference General Description The MAX6226 is an ultra-low-noise, high-pre cision, lowdropout voltage reference. T his family of voltage references featur e curvature-correction circuitry and hi gh-stability, laser-trimmed, thin-film resistors that result in 5ppm/°C (max) temperature coefficients and an excell ent ±0.02% (max) initial accuracy. The proprietary low-noise reference archit ecture produces a low flicker noise of 1.45μVP-P and wideband noise as low as 75nV/√Hz (2.5V output) without the i ncreased supply current usually found i n low-noise references. Improve wideban d noise to 45nV/√Hz and AC power-supp ly rejection by adding a 0.1μF capacit or at the noise reduction pin. The MAX6 226 series mode reference operates from a wide 2.7V to 12.6V supply voltage ra nge and load-regulation specifications are guaranteed to be less than 0.25Ω and 0.05Ω for sink and source curr.
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