How it Works
MAXIM
Loading...
MAX6126
Technical data
18 pgs301.21 Kb0

MAXIM MAX6126 Technical data

Download
General Description
The MAX6126 is an ultra-low-noise, high-precision, low­dropout voltage reference. This family of voltage refer­ences feature curvature-correction circuitry and high-stability, laser-trimmed, thin-film resistors that result in 3ppm/°C (max) temperature coefficients and an excellent ±0.02% (max) initial accuracy. The propri­etary low-noise reference architecture produces a low flicker noise of 1.3µV
P-P
and wideband noise as low as
60nV/√Hz (2.048V output) without the increased supply current usually found in low-noise references. Improve wideband noise to 35nV/√Hz and AC power-supply rejection by adding a 0.1µF capacitor at the noise reduction pin. The MAX6126 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 0.025Ω for sink and source cur­rents up to 10mA. These devices are available over the automotive temperature range of -40°C to +125°C.
The MAX6126 typically draws 380µA of supply current and is available in 2.048V, 2.500V, 2.800V, 3.000V,
4.096V, and 5.000V output voltages. These devices 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 MAX6126 offers supply current that is virtually inde­pendent of supply voltage and does not require an external resistor. The MAX6126 is stable with 0.1µF to 10µF of load capacitance.
The MAX6126 is available in the tiny 8-pin µMAX®, as well as 8-pin SO packages.
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
Features
o Ultra-Low 1.3µV
P-P
Noise (0.1Hz to 10Hz, 2.048V
Output)
o Ultra-Low 3ppm/°C (max) Temperature Coefficient
o ±0.02% (max) Initial Accuracy
o Wide (V
OUT
+ 200mV) to 12.6V Supply Voltage
Range
o Low 200mV (max) Dropout Voltage
o 380µA Quiescent Supply Current
o 10mA Sink/Source-Current Capability
o Stable with C
LOAD
= 0.1µF to 10µF
o Low 20ppm/1000hr Long-Term Stability
o 0.025Ω (max) Load Regulation
o 20µV/V (max) Line Regulation
o Force and Sense Outputs for Remote Sensing
MAX6126
Ultra-High-Precision, Ultra-Low-Noise,
Series Voltage Reference
________________________________________________________________
Maxim Integrated Products
1
Pin Configuration
Ordering Information
19-2647; Rev 5; 12/10
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
Ordering Information continued at end of data sheet.
µMAX is a registered trademark of Maxim Integrated Products, Inc.
+
Denotes a lead(Pb)-free/RoHS-compliant package.
TOP VIEW
NR
GND
*I.C. = INTERNALLY CONNECTED. DO NOT USE.
+
1
2
MAX6126
3
4
SO/µMAX
8
I.C.*
7
OUTFIN
OUTS
6
I.C.*GNDS
5
PART TEMP RANGE
MAX6126AASA21+ -40°C to +125°C 8 SO 2.048 0.02 3 — MAX6126BASA21+ -40°C to +125°C 8 SO 2.048 0.06 5 — MAX6126A21+ -40°C to +125°C 8 µMAX 2.048 0.06 3 6126A21
PIN­PACKAGE
OUTPUT
VOLTAGE
(V)
MAXIMUM INITIAL
ACCURACY (%)
MAXIMUM TEMPCO
(-40°C to +85°C)
(ppm/°C)
TOP
MARK
MAX6126
Ultra-High-Precision, Ultra-Low-Noise, Series Voltage Reference
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
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.
(All voltages referenced to GND)
GNDS ....................................................................-0.3V to +0.3V
IN ........................................................................... -0.3V to +13V
OUTF, OUTS, NR........ -0.3V to the lesser of (V
IN
+ 0.3V) or +6V
Output Short Circuit to GND or IN ..........................................60s
Continuous Power Dissipation (T
A
= +70°C)
8-Pin µMAX (derate 4.5mW/°C above +70°C) ............362mW
8-Pin SO (derate 5.88mW/°C above +70°C) ...............471mW
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
ELECTRICAL CHARACTERISTICS—MAX6126_21 (V
OUT
= 2.048V)
(VIN= 5V, C
LOAD
= 0.1µF, I
OUT
= 0, TA= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at TA= +25°C.)
OUTPUT
Output Voltage V
Output Voltage Accuracy
Output Voltage Temperature Coefficient (Note 1)
Line Regulation
Load Regulation
OUT Short-Circuit Current I
Thermal Hysteresis (Note 2)
Long-Term Stability
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
T
OUT
= +25°C 2.048 V
A
A grade SO -0.02 +0.02
Referred to V
,
OUT
= +25°C
T
A
B grade SO -0.06 +0.06
A grade µMAX -0.06 +0.06
B grade µMAX -0.1 +0.1
A grade SO 0.5 3
B grade SO 1 5
A grade µMAX 1 3
B grade µMAX 2 7
A grade SO 1 5
B grade SO 2 10
A grade µMAX 2 5
TCV
OUT
T
= -40°C
A
to +85°C
T
= -40°C
A
to +125°C
B grade µMAX 3 12
T
= +25°C220
∆V
/
OUT
∆V
∆V
OUT
∆I
OUT Sinking: -10mA ≤ I
SC
∆V
OUT
cycle
∆V
OUT
time
2.7V ≤ VIN ≤
12.6V
IN
Sourcing: 0 ≤ I
/
Short to GND 160
Short to IN 20
SO 25
/
µMAX 80
/
1000hr at T
A
= -40°C to +125°C40
T
A
≤ 10mA 0.7 25
OUT
≤ 0 1.3 25
OUT
= +25°C
A
SO 20
µMAX 100
%
ppm/°C
µV/V
µV/mA
mA
ppm
ppm/
1000hr
MAX6126
Ultra-High-Precision, Ultra-Low-Noise,
Series Voltage Reference
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS—MAX6126_21 (V
OUT
= 2.048V) (continued)
(VIN= 5V, C
LOAD
= 0.1µF, I
OUT
= 0, TA= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at TA= +25°C.)
ELECTRICAL CHARACTERISTICS—MAX6126_25 (V
OUT
= 2.500V)
(VIN= 5V, C
LOAD
= 0.1µF, I
OUT
= 0, TA= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at TA= +25°C.)
DYNAMIC CHARACTERISTICS
Noise Voltage e
Turn-On Settling Time t
Capacitive-Load Stability Range C
INPUT
Supply Voltage Range V
Quiescent Supply Current I
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
OUT
R
LOAD
IN
IN
f = 0.1Hz to 10Hz 1.3 µV
f = 1kHz, CNR = 0 60
f = 1kHz, CNR = 0.1µF 35
To V final value
No sustained oscillations 0.1 to 10 µF
Guaranteed by line-regulation test 2.7 12.6 V
T
T
= 0.01% of
OUT
= +25°C 380 550
A
= -40°C to +125°C 725
A
OUTPUT
Output Voltage V
Output Voltage Accuracy
Output Voltage Temperature Coefficient (Note 1)
Line Regulation
Load Regulation
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
TCV
∆V
∆V
∆V
∆I
OUT
OUT
/
OUT
IN
/
OUT OUT Sinking: -10mA ≤ I
TA = +25°C 2.500 V
Referred to V T
= +25°C
A
TA = -40°C to +85°C
TA = -40°C to +125°C
2.7V ≤ VIN ≤ 12.6V
Sourcing: 0 ≤ I
OUT
OUT
A grade SO -0.02 +0.02
B grade SO -0.06 +0.06
,
A grade µMAX -0.06 +0.06
B grade µMAX -0.1 +0.1
A grade SO 0.5 3
B grade SO 1 5
A grade µMAX 1 3
B grade µMAX 2 7
A grade SO 1 5
B grade SO 2 10
A grade µMAX 2 5
B grade µMAX 3 12
TA = +25°C320
T
= -40°C to +125°C40
A
≤ 10mA 1 25
≤ 0 1.8 25
OUT
CNR = 0 0.8
C
= 0.1µF 20
NR
P-P
nV/√Hz
ms
µA
%
ppm/°C
µV/V
µV/mA
MAX6126
Ultra-High-Precision, Ultra-Low-Noise, Series Voltage Reference
4 _______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS—MAX6126_25 (V
OUT
= 2.500V) (continued)
(VIN= 5V, C
LOAD
= 0.1µF, I
OUT
= 0, TA= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at TA= +25°C.)
ELECTRICAL CHARACTERISTICS—MAX6126_28 (V
OUT
= 2.800V)
(VIN= 5V, C
LOAD
= 0.1µF, I
OUT
= 0, TA= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at TA= +25°C.)
Dropout Voltage (Note 3) VIN - V
OUT Short-Circuit Current I
Thermal Hysteresis (Note 2)
Long-Term Stability
DYNAMIC CHARACTERISTICS
Turn-On Settling Time t
Capacitive-Load Stability Range C
INPUT
Supply Voltage Range V
Quiescent Supply Current I
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
∆V
cycle
∆V
time
OUT∆VOUT
SC
/
OUT
/
OUT
OUT
R
LOAD
IN
IN
= 0.1%
Short to GND 160
Short to IN 20
SO 35
µMAX 80
1000hr at T
f = 0.1Hz to 10Hz 1.45 µV
f = 1kHz, CNR = 0 75Noise Voltage e
f = 1kHz, CNR = 0.1µF 45
To V
OUT
final value
No sustained oscillations 0.1 to 10 µF
Guaranteed by line-regulation test 2.7 12.6 V
TA = +25°C 380 550
TA = -40°C to +125°C 725
= +25°C
A
= 0.01% of
I
= 5mA 0.06 0.2
OUT
I
= 10mA 0.12 0.4
OUT
SO 20
µMAX 100
CNR = 0 1
C
= 0.1µF 20
NR
V
mA
ppm
ppm/
1000hr
P-P
nV/√Hz
ms
µA
OUTPUT
Output Voltage V
Output Voltage Accuracy
Output Voltage Temperature Coefficient (Note 1)
Line Regulation ∆V
Load Regulation ∆V
Dropout Voltage (Note 3) VIN - V
PARAMETER SYMBOL CONDTIONS MIN TYP MAX UNITS
TCV
OUT
OUT
/∆VIN3.0V ≤ VIN ≤ 12.6V
OUT
/∆V
OUT
OUT
TA = +25°C 2.800 V
Referred to VOUT, T +25°C
TA = -40°C to +85°C
TA = -40°C to +125°C
Sourcing: 0 ≤ I
IN
Sinking: -10mA ≤ I
∆V
= 0.1%
OUT
=
A
≤ 10mA 1.3 28
OUT
≤ 0 2.4 28
OUT
A grade µMAX -0.06 +0.06
B grade µMAX -0.10 +0.10
A grade µMAX 1 3
B grade µMAX 2 7
A grade µMAX 2 5
B grade µMAX 3 12
TA = +25°C 3.5 23
= -40°C to
T
A
+125°C
I
= 5mA 0.06 0.2
OUT
= 10mA 0.12 0.4
I
OUT
45
%
ppm/°C
µV/V
µV/mA
V
MAX6126
Ultra-High-Precision, Ultra-Low-Noise,
Series Voltage Reference
_______________________________________________________________________________________ 5
ELECTRICAL CHARACTERISTICS—MAX6126_28 (V
OUT
= 2.800V) (continued)
(VIN= 5V, C
LOAD
= 0.1µF, I
OUT
= 0, TA= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at TA= +25°C.)
ELECTRICAL CHARACTERISTICS—MAX6126_30 (V
OUT
= 3.000V)
(VIN= 5V, C
LOAD
= 0.1µF, I
OUT
= 0, TA= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at TA= +25°C.)
OUT Short-Circuit Current I
Thermal Hysteresis (Note 2) ∆V
Long-Term Stability ∆V
DYNAMIC CHARACTERISTICS
Noise Voltage e
Turn-On Settling Time t
Capacitive-Load Stability Range C
INPUT
Supply Voltage Range V
Quiescent Supply Current I
PARAMETER SYMBOL CONDTIONS MIN TYP MAX UNITS
OUT
SC
/cycle µMAX 80 ppm
/time 1000hr at TA = +25°C µMAX 100
OUT
OUT
R
LOAD
IN
IN
Short to GND 160
Short to IN 20
f = 0.1Hz to 10Hz 1.45 µV
f = 1kHz, CNR = 0 75
f = 1kHz, CNR = 0.1µF 45
To V final value
No sustained oscillations 0.1 to 10 µF
Guaranteed by line-regulation test 3.0 12.6 V
TA = +25°C 380 550
TA = -40°C to +125°C 725
= 0.01% of
OUT
CNR = 0 1
= 0.1µF 20
C
NR
mA
ppm/
1000hr
P-P
nV/√Hz
ms
µA
OUTPUT
Output Voltage V
Output Voltage Accuracy
Output Voltage Temperature Coefficient (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
TCV
OUT
OUT
TA = +25°C 3.000 V
A grade SO -0.02 +0.02
Referred to V T
= +25°C
A
TA = -40°C to +85°C
TA = -40°C to +125°C
OUT
B grade SO -0.06 +0.06
,
A grade µMAX -0.06 +0.06
B grade µMAX -0.1 +0.1
A grade SO 0.5 3
B grade SO 1 5
A grade µMAX 1 3
B grade µMAX 2 7
A grade SO 1 5
B grade SO 2 10
A grade µMAX 2 5
B grade µMAX 3 12
%
ppm/°C
MAX6126
Ultra-High-Precision, Ultra-Low-Noise, Series Voltage Reference
6 _______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS—MAX6126_30 (V
OUT
= 3.000V) (continued)
(VIN= 5V, C
LOAD
= 0.1µF, I
OUT
= 0, TA= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at TA= +25°C.)
ELECTRICAL CHARACTERISTICS—MAX6126_41 (V
OUT
= 4.096V)
(VIN= 5V, C
LOAD
= 0.1µF, I
OUT
= 0, TA= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at TA= +25°C.)
Line Regulation
Load Regulation
Dropout Voltage (Note 3) VIN - V
OUT Short-Circuit Current I
Thermal Hysteresis (Note 2)
Long-Term Stability
DYNAMIC CHARACTERISTICS
Noise Voltage e
Capacitive-Load Stability Range C
Turn-On Settling Time t
INPUT
Supply Voltage Range V
Quiescent Supply Current I
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
∆V
∆V
∆I
∆V
cycle
∆V
/
OUT
∆V
IN
/
OUT
OUT
OUT∆VOUT
SC
/
OUT
/
OUT
time
OUT
LOAD
R
IN
IN
3.2V ≤ VIN ≤ 12.6V
Sourcing: 0 ≤ I Sinking: -10mA ≤ I
Short to GND 160
Short to IN 20
SO 20
µMAX 80
1000hr at T
f = 0.1Hz to 10Hz 1.75 µV
f = 1kHz, CNR = 0 90
f = 1kHz, CNR = 0.1µF 55
No sustained oscillations 0.1 to 10 µF
To V
OUT
of final value
Guaranteed by line-regulation test 3.2 12.6 V
TA = +25°C 380 550
TA = -40°C to +125°C 725
= 0.1%
A
= 0.01%
OUT
= +25°C
TA = +25°C425
= -40°C to +125°C50
T
A
≤ 10mA 1.5 30
≤ 0 2.8 30
OUT
I
= 5mA 0.06 0.2
OUT
I
= 10mA 0.11 0.4
OUT
SO 20
µMAX 100
CNR = 0 1.2
= 0.1µF 20
C
NR
µV/V
µV/mA
V
mA
ppm
ppm/
1000hr
P-P
nV/√Hz
ms
µA
OUTPUT
Output Voltage V
Output Voltage Accuracy
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
OUT
TA = +25°C 4.096 V
A grade SO -0.02 +0.02
Referred to V T
= +25°C
A
OUT
B grade SO -0.06 +0.06
,
A grade µMAX -0.06 +0.06
B grade µMAX -0.1 +0.1
%
+ 12 hidden pages
Buy Points How it Works FAQ Contact Us Questions and Suggestions Privacy Policy Cookie Policy Terms of Use