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PDF MAX6126 Data sheet ( Hoja de datos )
| Número de pieza | MAX6126 | |
| Descripción | Ultra-High-Precision / Ultra-Low-Noise / Series Voltage Reference | |
| Fabricantes | Maxim Integrated | |
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Hay una vista previa y un enlace de descarga de MAX6126 (archivo pdf) en la parte inferior de esta página. Total 18 Páginas | ||
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19-2647; Rev 2; 6/03
Ultra-High-Precision, Ultra-Low-Noise,
Series Voltage Reference
General Description
The MAX6126 is an ultra-low-noise, high-precision, low-
dropout voltage reference. This family of voltage refer-
ences 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 propri-
etary low-noise reference architecture produces a low
flicker noise of 1.3µVP-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 guaran-
teed to be less than 0.025Ω for sink and source cur-
rents 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, 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 resis-
tor. 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 1.3µVP-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 (VOUT + 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 CLOAD = 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
Pin Configuration
TOP VIEW
NR 1
IN 2
GND 3
GNDS 4
MAX6126
8 I.C.*
7 OUTF
6 OUTS
5 I.C.*
SO/µMAX
*I.C. = INTERNALLY CONNECTED. DO NOT USE.
Ordering Information
PART
TEMP RANGE
PIN-
PACKAGE
MAX6126AASA21
-40°C to +125°C 8 SO
MAX6126BASA21
-40°C to +125°C 8 SO
MAX6126AAUA21
-40°C to +125°C 8 µMAX
Ordering Information continued at end of data sheet.
OUTPUT
VOLTAGE
(V)
2.048
2.048
2.048
MAXIMUM INITIAL
ACCURACY (%)
MAXIMUM TEMPCO
(-40°C to +85°C)
(ppm/°C)
TOP
MARK
0.02
0.06
0.06
3—
5—
3 6126A21
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
1 page  
Ultra-High-Precision, Ultra-Low-Noise,
Series Voltage Reference
ELECTRICAL CHARACTERISTICS—MAX6126_30 (VOUT = 3.000V) (continued)
(VIN = 5V, CLOAD = 0.1µF, IOUT = 0, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX
Line Regulation
Load Regulation
Dropout Voltage (Note 3)
OUT Short-Circuit Current
∆VOUT/
∆VIN
∆VOUT/
∆IOUT
VIN - VOUT
ISC
3.2V ≤ VIN ≤ 12.6V
TA = +25°C
TA = -40°C to +125°C
Sourcing: 0 ≤ IOUT ≤ 10mA
Sinking: -10mA ≤ IOUT ≤ 0
∆VOUT = 0.1%
IOUT = 5mA
IOUT = 10mA
Short to GND
Short to IN
4 25
50
1.5 30
2.8 30
0.06 0.2
0.11 0.4
160
20
Thermal Hysteresis (Note 2)
∆VOUT/ SO
cycle µMAX
20
80
Long-Term Stability
∆VOUT/
time
1000hr at TA = +25°C
SO
µMAX
20
100
DYNAMIC CHARACTERISTICS
f = 0.1Hz to 10Hz
1.75
Noise Voltage
Capacitive-Load Stability Range
Turn-On Settling Time
INPUT
eOUT
CLOAD
tR
f = 1kHz, CNR = 0
f = 1kHz, CNR = 0.1µF
No sustained oscillations
To VOUT = 0.01%
of final value
CNR = 0
CNR = 0.1µF
90
55
0.1 to 10
1.2
20
Supply Voltage Range
Quiescent Supply Current
VIN Guaranteed by line-regulation test
IIN
TA = +25°C
TA = -40°C to +125°C
3.2 12.6
380 550
725
UNITS
µV/V
µV/mA
V
mA
ppm
ppm/
1000hr
µVP-P
nV/√Hz
µF
ms
V
µA
ELECTRICAL CHARACTERISTICS—MAX6126_41 (VOUT = 4.096V)
(VIN = 5V, CLOAD = 0.1µF, IOUT = 0, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX
OUTPUT
Output Voltage
VOUT TA = +25°C
A grade SO
-0.02
4.096
+0.02
Output Voltage Accuracy
Referred to VOUT,
TA = +25°C
B grade SO
A grade µMAX
-0.06
-0.06
+0.06
+0.06
B grade µMAX
-0.1
+0.1
UNITS
V
%
_______________________________________________________________________________________ 5
5 Page 
Ultra-High-Precision, Ultra-Low-Noise,
Series Voltage Reference
Typical Operating Characteristics (continued)
(VIN = 5V for MAX6126_21/25/30/41, VIN = 5.5V for MAX6126_50, CLOAD = 0.1µF, IOUT = 0, TA = +25°C, unless otherwise specified.)
(Note 5)
MAX6126_21
MAX6126_21
LOAD TRANSIENT
MAX6126 toc19
LOAD TRANSIENT
MAX6126 toc20
+1mA
IOUT
500µA/div
-100µA
-1mA
IOUT
5mA/div
-10mA
VOUT
AC-COUPLED
10mV/div
1ms/div
CLOAD = 10µF IOUT = -100µA TO 1mA
VIN = 5V
VOUT = 2.048V
MAX6126_21
LINE TRANSIENT
MAX6126 toc21
3.2V
VIN
200mV/div
2.7V
VOUT
AC-COUPLED
50mV/div
400µs/div
CLOAD = 10µF IOUT = -1mA TO -10mA
VIN = 5V
VOUT = 2.048V
MAX6126_50
LINE TRANSIENT
MAX6126 toc22
5.7V
VIN
200mV/div
5.2V
VOUT
AC-COUPLED
20mV/div
VOUT
AC-COUPLED
10mV/div
VOUT = 2.048V
20µs/div
CLOAD = 0.1µF
MAX6126_21
TURN-ON TRANSIENT
MAX6126 toc23
400µs/div
VIN = 5.2V TO 5.7V CLOAD = 0.1µF
VOUT = 5V
MAX6126_50
TURN-ON TRANSIENT
MAX6126 toc24
5.5V
VIN
2V/div
GND
5.5V
VIN
2V/div
GND
VOUT
1V/div
VOUT
2V/div
GND
CLOAD = 0.1µF
VOUT = 2.048V
20µs/div
CLOAD = 0.1µF
VOUT = 5V
200µs/div
______________________________________________________________________________________ 11
11 Page | ||
| Páginas | Total 18 Páginas | |
| PDF Descargar | [ Datasheet MAX6126.PDF ] | |
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