MAX6126BASA21-T [MAXIM]
Three Terminal Voltage Reference, 1 Output, 2.048V, BICMOS, PDSO8, 0.150 INCH, MS-012AA, SOIC-8;
| 型号： | MAX6126BASA21-T |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | Three Terminal Voltage Reference, 1 Output, 2.048V, BICMOS, PDSO8, 0.150 INCH, MS-012AA, SOIC-8 信息通信管理 光电二极管 |
| 文件： | 总18页 (文件大小：333K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
MAX6126
Ultra-High-Precision, Ultra-Low-Noise,
Series Voltage Reference
General Description
Features
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 ±±.±2ꢀ (max) initial accuracy. The propri-
etary low-noise reference architecture produces a low
o Ultra-Low 1.3µV
Noise (0.1Hz to 10Hz, 2.048V
P-P
Output)
o Ultra-Low 3ppm/°C (max) Temperature Coefficient
0.02ꢀ (max) ꢁnitial ꢂccuracy
o
o Wide (V
+ 200mV) to 12.6V Supply Voltage
OUT
flicker noise of 1.3µV
and wideband noise as low as
P-P
Range
6±nV/√Hz (2.±48V 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 ±.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 ±.±25Ω for sink and source cur-
rents up to 1±mA. These devices are available over the
automotive temperature range of -4±°C to +125°C.
o Low 200mV (max) Dropout Voltage
o 380µꢂ Quiescent Supply Current
o 10mꢂ Sink/Source-Current Capability
o Stable with C
= 0.1µF to 10µF
LOꢂD
o Low 20ppm/1000hr Long-Term Stability
o 0.025Ω (max) Load Regulation
o 20µV/V (max) Line Regulation
The MAX6126 typically draws 38±µA of supply current
and is available in 2.±48V, 2.5±±V, 2.8±±V, 3.±±±V,
4.±96V, and 5.±±±V output voltages. These devices
also feature dropout voltages as low as 2±±mV. Unlike
conventional shunt-mode (two-terminal) references that
waste supply current and require an external resistor,
the MAX6126 offers supply current that is virtually inde-
pendent of supply voltage and does not require an
external resistor. The MAX6126 is stable with ±.1µF to
1±µF of load capacitance.
o Force and Sense Outputs for Remote Sensing
Pin Configuration
TOP VIEW
+
NR
IN
1
2
3
4
8
7
6
5
I.C.*
®
The MAX6126 is available in the tiny 8-pin µMAX , as
OUTF
OUTS
I.C.*
well as 8-pin SO packages.
MAX6126
Applications
GND
GNDS
High-Resolution A/D and D/A Converters
ATE Equipment
High-Accuracy Reference Standard
Precision Current Sources
Digital Voltmeters
SO/µMAX
*I.C. = INTERNALLY CONNECTED. DO NOT USE.
High-Accuracy Industrial and Process Control
µMAX is a registered trademark of Maxim Integrated Products, Inc.
Ordering Information
OUTPUT
VOLTAGE
(V)
MAXIMUM TEMPCO
(-40°C to +85°C)
(ppm/°C)
PIN-
MAXIMUM INITIAL
ACCURACY (%)
PART
TEMP RANGE
PACKAGE
MAX6126AASA21+
MAX6126BASA21+
MAX6126A21+
-4±°C to +125°C
-4±°C to +125°C
-4±°C to +125°C
8 SO
2.±48
2.±48
2.±48
±.±2
±.±6
±.±6
3
5
3
8 SO
8 µMAX
Ordering ꢁnformation continued at end of data sheet.
+Denotes a lead(Pb)-free/RoHS-compliant package.
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
19-2647; Rev 6; 8/12
MAX6126
Ultra-High-Precision, Ultra-Low-Noise,
Series Voltage Reference
ꢂBSOLUTE MꢂXꢁMUM RꢂTꢁNGS
(All voltages referenced to GND)
Operating Temperature Range ........................-4±°C to +125°C
GNDS ....................................................................-±.3V to +±.3V
IN........................................................................... -±.3V to +13V
Junction Temperature .....................................................+15±°C
Storage Temperature Range ............................-65°C to +15±°C
Lead Temperature (soldering, 1±s) ................................+3±±°C
Soldering Temperature (reflow) ......................................+26±°C
OUTF, OUTS, NR........ -±.3V to the lesser of (V + ±.3V) or +6V
IN
Output Short Circuit to GND or IN ..........................................6±s
Continuous Power Dissipation (T = +7±°C)
A
8-Pin µMAX (derate 4.5mW/°C above +7±°C) ............362mW
8-Pin SO (derate 5.88mW/°C above +7±°C) ...............471mW
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.
ELECTRꢁCꢂL CHꢂRꢂCTERꢁSTꢁCS—MꢂX6126_21 (V
= 2.048V)
OUT
(V = 5V, C
= ±.1µF, I
= ±, T = T
to T
, unless otherwise noted. Typical values are at T = +25°C.)
MAX A
IN
LOAD
OUT
A
MIN
PARAMETER
OUTPUT
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Output Voltage
V
T = +25°C
A
2.±48
V
OUT
A grade SO
-±.±2
-±.±6
-±.±6
-±.1
+±.±2
+±.±6
+±.±6
+±.1
3
Referred to
B grade SO
Output Voltage Accuracy
V
,
ꢀ
OUT
A grade µMAX
B grade µMAX
A grade SO
T = +25°C
A
±.5
1
B grade SO
5
T = -4±°C
A
to +85°C
A grade µMAX
B grade µMAX
A grade SO
1
3
2
7
Output Voltage Temperature
Coefficient (Note 1)
TCV
ppm/°C
OUT
1
5
B grade SO
2
1±
T = -4±°C
A
to +125°C
A grade µMAX
B grade µMAX
2
5
3
12
T = +25°C
2
2±
A
∆V
∆V
/
/
2.7V ≤ V
12.6V
≤
IN
OUT
Line Regulation
µV/V
µV/mA
mA
IN
T = -4±°C to +125°C
A
4±
Sourcing: ± ≤ I
≤ 1±mA
±.7
1.3
16±
2±
25
OUT
∆V
∆I
OUT
OUT
Load Regulation
Sinking: -1±mA ≤ I
Short to GND
Short to IN
SO
≤ ±
25
OUT
OUT Short-Circuit Current
Thermal Hysteresis (Note 2)
Long-Term Stability
I
SC
25
∆V
cycle
/
/
OUT
ppm
µMAX
8±
SO
µMAX
2±
∆V
OUT
time
ppm/
1±±±hr
1±±±hr at T = +25°C
A
1±±
Maxim Integrated
2
MAX6126
Ultra-High-Precision, Ultra-Low-Noise,
Series Voltage Reference
ELECTRꢁCꢂL CHꢂRꢂCTERꢁSTꢁCS—MꢂX6126_21 (V
= 2.048V) (continued)
OUT
(V = 5V, C
= ±.1µF, I
= ±, T = T
to T
, unless otherwise noted. Typical values are at T = +25°C.)
MAX A
IN
LOAD
OUT
A
MIN
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
DYNAMIC CHARACTERISTICS
f = ±.1Hz to 1±Hz
1.3
6±
µV
P-P
Noise Voltage
e
f = 1kHz, C = ±
NR
OUT
nV/√Hz
f = 1kHz, C = ±.1µF
35
NR
C
C
= ±
±.8
NR
NR
To V
final value
= ±.±1ꢀ of
OUT
Turn-On Settling Time
t
ms
µF
R
= ±.1µF
2±
Capacitive-Load Stability Range
INPUT
C
No sustained oscillations
±.1 to 1±
LOAD
Supply Voltage Range
V
Guaranteed by line-regulation test
T = +25°C
2.7
12.6
55±
725
V
IN
38±
A
Quiescent Supply Current
I
µA
IN
T = -4±°C to +125°C
A
ELECTRꢁCꢂL CHꢂRꢂCTERꢁSTꢁCS—MꢂX6126_25 (V
= 2.500V)
OUT
(V = 5V, C
= ±.1µF, I
= ±, T = T
to T
, unless otherwise noted. Typical values are at T = +25°C.)
MAX A
IN
LOAD
OUT
A
MIN
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
OUTPUT
Output Voltage
V
T
A
= +25°C
2.5±±
V
OUT
A grade SO
-±.±2
-±.±6
-±.±6
-±.1
+±.±2
+±.±6
+±.±6
+±.1
3
B grade SO
Referred to V
,
OUT
Output Voltage Accuracy
ꢀ
T
A
T
A
T
A
= +25°C
A grade µMAX
B grade µMAX
A grade SO
±.5
1
B grade SO
5
= -4±°C to +85°C
A grade µMAX
B grade µMAX
A grade SO
1
3
2
7
Output Voltage Temperature
Coefficient (Note 1)
TCV
ppm/°C
OUT
1
5
B grade SO
2
1±
= -4±°C to
+125°C
A grade µMAX
B grade µMAX
2
5
3
12
T
T
= +25°C
3
2±
A
A
∆V
∆V
/
/
OUT
Line Regulation
Load Regulation
2.7V ≤ V ≤ 12.6V
µV/V
IN
IN
= -4±°C to +125°C
4±
Sourcing: ± ≤ I
≤ 1±mA
1
25
OUT
∆V
∆I
OUT
OUT
µV/mA
Sinking: -1±mA ≤ I
≤ ±
1.8
25
OUT
Maxim Integrated
3
MAX6126
Ultra-High-Precision, Ultra-Low-Noise,
Series Voltage Reference
ELECTRꢁCꢂL CHꢂRꢂCTERꢁSTꢁCS—MꢂX6126_25 (V
= 2.500V) (continued)
OUT
(V = 5V, C
= ±.1µF, I
= ±, T = T
to T
, unless otherwise noted. Typical values are at T = +25°C.)
MAX A
IN
LOAD
OUT
A
MIN
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
±.±6
±.12
16±
2±
MAX
±.2
UNITS
I
I
= 5mA
OUT
OUT
Dropout Voltage (Note 3)
V
- V
∆V = ±.1ꢀ
OUT
V
IN
OUT
= 1±mA
±.4
Short to GND
Short to IN
SO
OUT Short-Circuit Current
I
mA
SC
35
∆V
cycle
/
/
OUT
Thermal Hysteresis (Note 2)
ppm
µMAX
8±
SO
µMAX
2±
∆V
OUT
time
ppm/
1±±±hr
Long-Term Stability
1±±±hr at T = +25°C
A
1±±
DYNAMIC CHARACTERISTICS
f = ±.1Hz to 1±Hz
1.45
µV
P-P
Noise Voltage
e
f = 1kHz, C = ±
75
OUT
NR
nV/√Hz
f = 1kHz, C = ±.1µF
45
1
NR
C
C
= ±
NR
NR
To V
= ±.±1ꢀ of
OUT
Turn-On Settling Time
t
ms
µF
R
final value
= ±.1µF
2±
Capacitive-Load Stability Range
INPUT
C
No sustained oscillations
±.1 to 1±
LOAD
Supply Voltage Range
V
Guaranteed by line-regulation test
2.7
12.6
55±
725
V
IN
T
A
A
= +25°C
38±
Quiescent Supply Current
I
µA
IN
T
= -4±°C to +125°C
ELECTRꢁCꢂL CHꢂRꢂCTERꢁSTꢁCS—MꢂX6126_28 (V
= 2.800V)
OUT
(V = 5V, C
= ±.1µF, I
= ±, T = T
to T
, unless otherwise noted. Typical values are at T = +25°C.)
MAX A
IN
LOAD
OUT
A
MIN
PARAMETER
SYMBOL
CONDTIONS
MIN
TYP
MAX
UNITS
OUTPUT
Output Voltage
V
T
A
= +25°C
2.8±±
V
OUT
A grade µMAX
-±.±6
-±.1±
+±.±6
Referred to VOUT, T
+25°C
=
A
Output Voltage Accuracy
ꢀ
B grade µMAX
A grade µMAX
B grade µMAX
A grade µMAX
B grade µMAX
+±.1±
1
2
3
7
T
= -4±°C to +85°C
A
A
Output Voltage Temperature
Coefficient (Note 1)
TCV
ppm/°C
µV/V
OUT
2
5
T
= -4±°C to +125°C
3
12
23
T
A
= +25°C
3.5
Line Regulation
∆V
/∆V
/∆V
3.±V ≤ V ≤ 12.6V
IN
OUT
IN
T
= -4±°C to
A
45
+125°C
Sourcing: ± ≤ I
≤ 1±mA
1.3
2.4
28
28
OUT
Load Regulation
∆V
µV/mA
V
OUT
IN
Sinking: -1±mA ≤ I
≤ ±
OUT
I
I
= 5mA
±.±6
±.12
±.2
±.4
OUT
Dropout Voltage (Note 3)
V
- V
∆V
= ±.1ꢀ
IN
OUT
OUT
= 1±mA
OUT
Maxim Integrated
4
MAX6126
Ultra-High-Precision, Ultra-Low-Noise,
Series Voltage Reference
ELECTRꢁCꢂL CHꢂRꢂCTERꢁSTꢁCS—MꢂX6126_28 (V
= 2.800V) (continued)
OUT
(V = 5V, C
= ±.1µF, I
= ±, T = T
to T
, unless otherwise noted. Typical values are at T = +25°C.)
MAX A
IN
LOAD
OUT
A
MIN
PARAMETER
SYMBOL
CONDTIONS
MIN
TYP
16±
2±
MAX
UNITS
mA
Short to GND
Short to IN
OUT Short-Circuit Current
I
SC
Thermal Hysteresis (Note 2)
Long-Term Stability
∆V
/cycle µMAX
8±
ppm
OUT
ppm/
1±±±hr
∆V
/time 1±±±hr at T = +25°C
OUT A
µMAX
1±±
DYNAMIC CHARACTERISTICS
f = ±.1Hz to 1±Hz
1.45
µV
P-P
Noise Voltage
e
f = 1kHz, C = ±
75
OUT
NR
nV/√Hz
f = 1kHz, C = ±.1µF
45
1
NR
C
C
= ±
NR
NR
To V
= ±.±1ꢀ of
OUT
Turn-On Settling Time
t
ms
µF
R
final value
= ±.1µF
2±
Capacitive-Load Stability Range
INPUT
C
No sustained oscillations
±.1 to 1±
LOAD
Supply Voltage Range
V
Guaranteed by line-regulation test
3.±
12.6
55±
725
V
IN
T
= +25°C
38±
A
A
Quiescent Supply Current
I
µA
IN
T
= -4±°C to +125°C
ELECTRꢁCꢂL CHꢂRꢂCTERꢁSTꢁCS—MꢂX6126_30 (V
= 3.000V)
OUT
(V = 5V, C
= ±.1µF, I
= ±, T = T
to T
, unless otherwise noted. Typical values are at T = +25°C.)
MAX A
IN
LOAD
OUT
A
MIN
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
OUTPUT
Output Voltage
V
T
A
= +25°C
3.±±±
V
OUT
A grade SO
-±.±2
-±.±6
-±.±6
-±.1
+±.±2
B grade SO
+±.±6
Referred to V
,
OUT
Output Voltage Accuracy
ꢀ
T
A
= +25°C
A grade µMAX
B grade µMAX
A grade SO
+±.±6
+±.1
3
±.5
1
B grade SO
5
T
A
= -4±°C to
+85°C
A grade µMAX
B grade µMAX
A grade SO
1
3
2
7
Output Voltage Temperature
Coefficient (Note 1)
TCV
ppm/°C
OUT
1
5
B grade SO
2
1±
5
T
= -4±°C to
A
+125°C
A grade µMAX
B grade µMAX
2
3
12
Maxim Integrated
5
MAX6126
Ultra-High-Precision, Ultra-Low-Noise,
Series Voltage Reference
ELECTRꢁCꢂL CHꢂRꢂCTERꢁSTꢁCS—MꢂX6126_30 (V
= 3.000V) (continued)
OUT
(V = 5V, C
= ±.1µF, I
= ±, T = T
to T
, unless otherwise noted. Typical values are at T = +25°C.)
MAX A
IN
LOAD
OUT
A
MIN
PARAMETER
Line Regulation
SYMBOL
CONDITIONS
MIN
TYP
MAX
25
UNITS
T
A
T
A
= +25°C
4
∆V
/
OUT
3.2V ≤ V ≤ 12.6V
µV/V
IN
∆V
IN
= -4±°C to +125°C
5±
Sourcing: ± ≤ I
≤ 1±mA
1.5
2.8
±.±6
±.11
16±
2±
3±
OUT
∆V
∆I
/
OUT
Load Regulation
µV/mA
V
OUT
Sinking: -1±mA ≤ I
≤ ±
3±
OUT
I
= 5mA
±.2
±.4
OUT
OUT
Dropout Voltage (Note 3)
OUT Short-Circuit Current
V
- V
∆V
= ±.1ꢀ
OUT
IN
OUT
I
= 1±mA
Short to GND
Short to IN
SO
I
mA
SC
2±
∆V
cycle
/
/
OUT
Thermal Hysteresis (Note 2)
ppm
µMAX
8±
SO
µMAX
2±
∆V
OUT
time
ppm/
1±±±hr
Long-Term Stability
1±±±hr at T = +25°C
A
1±±
DYNAMIC CHARACTERISTICS
f = ±.1Hz to 1±Hz
1.75
9±
µV
P-P
Noise Voltage
e
OUT
f = 1kHz, C = ±
NR
nV/√Hz
µF
f = 1kHz, C = ±.1µF
NR
55
Capacitive-Load Stability Range
Turn-On Settling Time
C
No sustained oscillations
±.1 to 1±
1.2
LOAD
C
C
= ±
NR
NR
To V
= ±.±1ꢀ
OUT
t
ms
R
of final value
= ±.1µF
2±
INPUT
Supply Voltage Range
V
Guaranteed by line-regulation test
3.2
12.6
55±
725
V
IN
T
A
T
A
= +25°C
38±
Quiescent Supply Current
I
µA
IN
= -4±°C to +125°C
ELECTRꢁCꢂL CHꢂRꢂCTERꢁSTꢁCS—MꢂX6126_41 (V
= 4.096V)
OUT
(V = 5V, C
= ±.1µF, I
= ±, T = T
to T
, unless otherwise noted. Typical values are at T = +25°C.)
MAX A
IN
LOAD
OUT
A
MIN
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
OUTPUT
Output Voltage
V
T = +25°C
A
4.±96
V
OUT
A grade SO
-±.±2
-±.±6
-±.±6
-±.1
+±.±2
+±.±6
+±.±6
+±.1
B grade SO
Referred to V
,
OUT
Output Voltage Accuracy
ꢀ
T
A
= +25°C
A grade µMAX
B grade µMAX
Maxim Integrated
6
MAX6126
Ultra-High-Precision, Ultra-Low-Noise,
Series Voltage Reference
ELECTRꢁCꢂL CHꢂRꢂCTERꢁSTꢁCS—MꢂX6126_41 (V
= 4.096V) (continued)
OUT
(V = 5V, C
= ±.1µF, I
= ±, T = T
to T
, unless otherwise noted. Typical values are at T = +25°C.)
MAX A
IN
LOAD
OUT
A
MIN
PARAMETER
SYMBOL
CONDITIONS
A grade SO
MIN
TYP
±.5
1
MAX
3
UNITS
B grade SO
5
T
A
= -4±°C to
+85°C
A grade µMAX
B grade µMAX
A grade SO
1
3
2
7
Output Voltage Temperature
Coefficient (Note 1)
TCV
ppm/°C
OUT
1
5
B grade SO
2
1±
5
T
= -4±°C to
A
+125°C
A grade µMAX
B grade µMAX
2
3
12
3±
6±
4±
4±
±.2
±.4
T
A
T
A
= +25°C
4.5
∆V
∆V
/
/
OUT
Line Regulation
4.3V ≤ V ≤ 12.6V
µV/V
µV/mA
V
IN
IN
= -4±°C to +125°C
Sourcing: ± ≤ I
≤ 1±mA
2
5
OUT
∆V
∆I
OUT
OUT
Load Regulation
Sinking: -1±mA ≤ I
≤ ±
OUT
I
= 5mA
±.±5
±.1
16±
2±
OUT
OUT
Dropout Voltage (Note 3)
OUT Short-Circuit Current
Thermal Hysteresis (Note 2)
V
- V
∆V
= ±.1ꢀ
OUT
IN
OUT
I
= 1±mA
Short to GND
Short to IN
SO
I
mA
SC
2±
∆V
cycle
/
/
OUT
ppm
µMAX
8±
SO
2±
∆V
OUT
time
ppm/
1±±±hr
Long-Term Stability
1±±±hr at T = +25°C
A
µMAX
1±±
DYNAMIC CHARACTERISTICS
f = ±.1Hz to 1±Hz
2.4
12±
µV
P-P
Noise Voltage
e
f = 1kHz, C = ±
NR
OUT
nV/√Hz
µF
f = 1kHz, C = ±.1µF
8±
NR
Capacitive-Load Stability Range
Turn-On Settling Time
C
No sustained oscillations
±.1 to 1±
1.6
LOAD
C
C
= ±
NR
NR
To V
= ±.±1ꢀ of
OUT
t
ms
R
final value
= ±.1µF
2±
INPUT
Supply Voltage Range
V
Guaranteed by line-regulation test
4.3
12.6
55±
725
V
IN
T
A
A
= +25°C
38±
Quiescent Supply Current
I
µA
IN
T
= -4±°C to +125°C
Maxim Integrated
7
MAX6126
Ultra-High-Precision, Ultra-Low-Noise,
Series Voltage Reference
ELECTRꢁCꢂL CHꢂRꢂCTERꢁSTꢁCS—MꢂX6126_50 (V
= 5.000V)
OUT
(V = 5.5V, C
= ±.1µF, I
= ±, T = T
to T
, unless otherwise noted. Typical values are at T = +25°C.)
MAX A
IN
LOAD
OUT
A
MIN
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
OUTPUT
Output Voltage
V
T
T
= +25°C
= +25°C
5.±±±
V
OUT
A
A grade SO
-±.±2
-±.±6
-±.±6
-±.1
+±.±2
+±.±6
+±.±6
+±.1
3
B grade SO
Output Voltage Accuracy
ꢀ
A
A grade µMAX
B grade µMAX
A grade SO
±.5
1
B grade SO
5
T
T
= -4±°C to +85°C
= -4±°C to
A
A grade µMAX
B grade µMAX
A grade SO
1
3
2
7
Output Voltage Temperature
Coefficient (Note 1)
TCV
ppm/°C
OUT
1
5
B grade SO
2
1±
A
+125°C
A grade µMAX
B grade µMAX
2
5
3
12
T
T
= +25°C
3
4±
A
A
∆V
∆V
/
/
OUT
Line Regulation
5.2V ≤ V ≤ 12.6V
µV/V
µV/mA
V
IN
IN
= -4±°C to +125°C
8±
Sourcing: ± ≤ I
≤ 1±mA
2.5
6.5
±.±5
±.1
16±
2±
5±
OUT
∆V
∆I
OUT
OUT
Load Regulation
Sinking: -1±mA ≤ I
≤ ±
5±
OUT
I
I
= 5mA
±.2
±.4
OUT
OUT
Dropout Voltage (Note 3)
OUT Short-Circuit Current
Thermal Hysteresis (Note 2)
Long-Term Stability
V
- V
∆V
= ±.1ꢀ
OUT
IN
OUT
= 1±mA
Short to GND
Short to IN
SO
I
mA
SC
15
∆V
cycle
/
/
OUT
ppm
µMAX
8±
SO
µMAX
2±
∆V
OUT
time
ppm/
1±±±hr
1±±±hr at T = +25°C
A
1±±
DYNAMIC CHARACTERISTICS
Noise Voltage
f = ±.1Hz to 1±Hz
2.85
145
µV
P-P
e
f = 1kHz, C = ±
NR
OUT
nV/√Hz
f = 1kHz, C = ±.1µF
95
NR
Capacitive-Load Stability Range
C
No sustained oscillations
±.1 to 1±
µF
LOAD
Maxim Integrated
8
MAX6126
Ultra-High-Precision, Ultra-Low-Noise,
Series Voltage Reference
ELECTRꢁCꢂL CHꢂRꢂCTERꢁSTꢁCS—MꢂX6126_50 (V
= 5.000V) (continued)
OUT
(V = 5.5V, C
= ±.1µF, I
= ±, T = T
to T
, unless otherwise noted. Typical values are at T = +25°C.)
MAX A
IN
LOAD
OUT
A
MIN
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
2
MAX
UNITS
C
C
= ±
NR
NR
To V
final value
= ±.±1ꢀ of
OUT
Turn-On Settling Time
t
ms
R
= ±.1µF
2±
INPUT
Supply Voltage Range
V
Guaranteed by line-regulation test
5.2
12.6
55±
725
V
IN
T
A
A
= +25°C
38±
Quiescent Supply Current
I
µA
IN
T
= -4±°C to +125°C
Note 1: Temperature coefficient is measured by the “box” method, i.e., the maximum ∆V
/ V
is divided by the maximum ∆T.
OUT
OUT
Note 2: Thermal hysteresis is defined as the change in +25°C output voltage before and after cycling the device from T
to T
.
MIN
MAX
Note 3: Dropout voltage is defined as the minimum differential voltage (V - V
) at which V
decreases by ±.1ꢀ from its
IN
OUT
OUT
original value at V = 5.±V (V = 5.5V for V = 5.±V).
IN
IN
OUT
Typical Operating Characteristics
(V = 5V for MAX6126_21/25/3±/41, V = 5.5V for MAX6126_5±, C
= ±.1µF, I = ±, T = +25°C, unless otherwise specified.)
OUT A
IN
IN
LOAD
(Note 5)
MAX6126A_21
OUTPUT VOLTAGE TEMPERATURE DRIFT
(V = 2.048V) (SO)
MAX6126A_21
OUTPUT VOLTAGE TEMPERATURE DRIFT
(V = 2.048V) (µMAX)
MAX6126A_50
OUTPUT VOLTAGE TEMPERATURE DRIFT
(V
= 5.000V) (SO)
OUT
THREE TYPICAL PARTS
OUT
THREE TYPICAL PARTS
OUT
2.0490
2.0485
2.0480
2.0475
2.0470
2.0465
2.0460
2.0490
2.0485
2.0480
2.0475
2.0470
5.002
5.001
5.000
4.999
4.998
THREE TYPICAL PARTS
-50 -25
0
25
50
75 100 125
-50 -25
0
25
50
75 100 125
-50 -25
0
25
50
75 100 125
TEMPERATURE (°C)
TEMPERATURE (°C)
TEMPERATURE (°C)
Maxim Integrated
9
MAX6126
Ultra-High-Precision, Ultra-Low-Noise,
Series Voltage Reference
Typical Operating Characteristics (continued)
(V = 5V for MAX6126_21/25/3±/41, V = 5.5V for MAX6126_5±, C
= ±.1µF, I
= ±, T = +25°C, unless otherwise specified.)
A
IN
IN
LOAD
OUT
(Note 5)
MAX6126A_50
OUTPUT VOLTAGE TEMPERATURE DRIFT
(V = 5.000V) (µMAX)
MAX6126_21
LOAD REGULATION
MAX6126_50
LOAD REGULATION
5.001
OUT
THREE TYPICAL PARTS
2.0485
2.0480
2.0475
2.0470
2.0465
2.0460
5.002
5.001
5.000
4.999
4.998
T
= +25°C
= -40°C
A
T
= +25°C
A
5.000
4.999
4.998
4.997
4.996
T
= -40°C
A
T
A
T
= +125°C
A
T
= +125°C
A
-10
-5
0
5
10
-10
-5
0
5
10
-50 -25
0
25
50
75 100 125
OUTPUT CURRENT (mA)
OUTPUT CURRENT (mA)
TEMPERATURE (°C)
MAX6126_25
DROPOUT VOLTAGE
vs. SOURCE CURRENT
MAX6126_50
DROPOUT VOLTAGE
vs. SOURCE CURRENT
MAX6126_21
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
300
250
200
150
100
50
250
200
150
100
50
0
-20
T
= +125°C
-40
A
T
= +125°C
A
-60
T
= +25°C
A
T
= +25°C
A
-80
T
= -40°C
A
T
= -40°C
A
-100
-120
0
0
0
3
6
9
12
15
0
3
6
9
12
15
0.001 0.01
0.1
1
10
100 1000
SOURCE CURRENT (mA)
SOURCE CURRENT (mA)
FREQUENCY (kHz)
MAX6126_50
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
MAX6126_21
SUPPLY CURRENT vs. INPUT VOLTAGE
MAX6126_50
SUPPLY CURRENT vs. INPUT VOLTAGE
600
500
400
300
200
100
0
0
-20
900
800
700
600
500
400
300
200
100
0
T
= +125°C
A
T
= +25°C
= -40°C
A
-40
T
= +125°C
A
T
A
-60
T
= +25°C
= -40°C
A
T
A
-80
-100
-120
0
2
4
6
8
10
12
14
0.001 0.01
0.1
1
10
100 1000
0
2
4
6
8
10
12
14
INPUT VOLTAGE (V)
FREQUENCY (kHz)
INPUT VOLTAGE (V)
Maxim Integrated
1±
MAX6126
Ultra-High-Precision, Ultra-Low-Noise,
Series Voltage Reference
Typical Operating Characteristics (continued)
(V = 5V for MAX6126_21/25/3±/41, V = 5.5V for MAX6126_5±, C
= ±.1µF, I = ±, T = +25°C, unless otherwise specified.)
OUT A
IN
IN
LOAD
(Note 5)
MAX6126_21
OUTPUT NOISE (0.1Hz TO 10Hz)
MAX6126_50
OUTPUT NOISE (0.1Hz TO 10Hz)
MAX6126 toc13
MAX6126 toc14
V
= 2.048V
V
= 5V
OUT
OUT
0.4µV/div
1µV/div
1s/div
1s/div
MAX6126_21
LOAD TRANSIENT
MAX6126_21
LOAD TRANSIENT
MAX6126 toc16
MAX6126 toc15
1mA
10mA
I
OUT
I
OUT
500µA/div
5mA/div
-100µA
0mA
V
OUT
V
OUT
AC-COUPLED
20mV/div
AC-COUPLED
100mV/div
200µs/div
200µs/div
C
V
= 0.1µF
I
V
= -100µA TO 1mA
OUT
C
V
= 0.1µF
I
V
= 0 TO 10mA
= 2.048V
LOAD
LOAD
OUT
OUT
= 5V
= 2.048V
OUT
= 5V
IN
IN
MAX6126_21
LOAD TRANSIENT
MAX6126_21
LOAD TRANSIENT
MAX6126 toc18
MAX6126 toc17
10mA
-1mA
I
I
OUT
OUT
5mA/div
5mA/div
0mA
-10mA
V
OUT
AC-COUPLED
20mV/div
V
OUT
AC-COUPLED
100mV/div
1ms/div
400µs/div
C
= 10µF
I
V
= 0 TO 10mA
= 2.048V
C
= 0.1µF
I
V
= -1mA TO -10mA
= 2.048V
LOAD
= 5V
OUT
OUT
LOAD
= 5V
OUT
OUT
V
V
IN
IN
Maxim Integrated
11
MAX6126
Ultra-High-Precision, Ultra-Low-Noise,
Series Voltage Reference
Typical Operating Characteristics (continued)
(V = 5V for MAX6126_21/25/3±/41, V = 5.5V for MAX6126_5±, C
= ±.1µF, I = ±, T = +25°C, unless otherwise specified.)
OUT A
IN
IN
LOAD
(Note 5)
MAX6126_21
MAX6126_21
LOAD TRANSIENT
LOAD TRANSIENT
MAX6126 toc19
MAX6126 toc20
+1mA
-1mA
I
I
OUT
OUT
500µA/div
5mA/div
-10mA
-100µA
V
V
OUT
OUT
AC-COUPLED
10mV/div
AC-COUPLED
50mV/div
1ms/div
400µs/div
C
= 10µF
I
V
= -100µA TO 1mA
OUT
C
= 10µF
I
OUT
= -1mA TO -10mA
= 2.048V
LOAD
= 5V
OUT
LOAD
= 5V
V
= 2.048V
V
V
IN
IN
OUT
MAX6126_50
LINE TRANSIENT
MAX6126_21
LINE TRANSIENT
MAX6126 toc22
MAX6126 toc21
5.7V
3.2V
V
V
IN
IN
200mV/div
200mV/div
5.2V
2.7V
V
V
OUT
OUT
AC-COUPLED
20mV/div
AC-COUPLED
10mV/div
400µs/div
20µs/div
C = 0.1µF
LOAD
V
= 5.2V TO 5.7V
= 5V
V
OUT
= 2.048V
C
LOAD
= 0.1µF
IN
V
OUT
MAX6126_21
MAX6126_50
TURN-ON TRANSIENT
TURN-ON TRANSIENT
MAX6126 toc24
MAX6126 toc23
5.5V
5.5V
V
V
IN
IN
2V/div
2V/div
GND
GND
V
V
OUT
OUT
1V/div
2V/div
GND
200µs/div
20µs/div
C
V
= 0.1µF
C
V
= 0.1µF
LOAD
LOAD
= 5V
= 2.048V
OUT
OUT
Maxim Integrated
12
MAX6126
Ultra-High-Precision, Ultra-Low-Noise,
Series Voltage Reference
Typical Operating Characteristics (continued)
(V = 5V for MAX6126_21/25/3±/41, V = 5.5V for MAX6126_5±, C
= ±.1µF, I
= ±, T = +25°C, unless otherwise specified.)
A
IN
IN
LOAD
OUT
(Note 5)
MAX6126B_25
LONG-TERM STABILITY vs. TIME (SO)
MAX6126_21
TURN-ON TRANSIENT
MAX6126_50
TURN-ON TRANSIENT
MAX6126 toc25
MAX6126 toc26
2.5006
TWO TYPICAL PARTS
V
= 2.5V
OUT
2.5004
2.5002
2.5000
2.4998
2.4996
2.4994
5.5V
5.5V
V
IN
V
IN
2V/div
2V/div
GND
GND
V
OUT
V
OUT
2V/div
1V/div
GND
0
200
400
600
800
1000
40µs/div
400µs/div
C
= 10µF
TIME (hr)
LOAD
C
= 10µF
LOAD
V
= 5V
OUT
V
= 2.048V
OUT
MAX6126B_25
LONG-TERM STABILITY vs. TIME (µMAX)
MAX6126B_50
LONG-TERM STABILITY vs. TIME (µMAX)
MAX6126B_50
LONG-TERM STABILITY vs. TIME (SO)
2.5010
2.5005
2.5000
2.4995
2.4990
5.0010
5.0005
5.0000
4.9995
4.9990
5.0006
TWO TYPICAL PARTS
TWO TYPICAL PARTS
V
= 5V
V
= 5V
OUT
OUT
5.0004
5.0002
5.0000
4.9998
4.9996
4.9994
TWO TYPICAL PARTS
V
= 2.5V
OUT
0
200
400
600
800
1000
0
200
400
600
800
1000
0
200
400
600
800
1000
TIME (hr)
TIME (hr)
TIME (hr)
Note 5: Many of the MAX6126 Typical Operating Characteristics are extremely similar. The extremes of these characteristics are
found in the MAX6126_21 (2.±48V output) and the MAX6126_5± (5.±±±V output). The Typical Operating Characteristics of
the remainder of the MAX6126 family typically lie between those two extremes and can be estimated based on their output
voltages.
Maxim Integrated
13
MAX6126
Ultra-High-Precision, Ultra-Low-Noise,
Series Voltage Reference
Pin Description
(V
OUT
+ 200mV) TO 12.6V INPUT
PIN
NAME
FUNCTION
Noise Reduction. Connect a ±.1µF
capacitor to improve wideband noise.
Leave unconnected if not used (see
Figure 1).
IN
1
NR
REFERENCE
OUTPUT
OUTF
OUTS
2
3
IN
Positive Power-Supply Input
Ground
MAX6126
GND
*
Ground-Sense Connection. Connect to
ground connection at load.
NR
4
GNDS
0.1µF*
Internally Connected. Do not connect
anything to these pins.
5, 8
6
I.C.
GND
GNDS
OUTS
Voltage Reference Sense Output
Voltage Reference Force Output. Short
OUTF to OUTS as close to the load as
possible. Bypass OUTF with a
7
OUTF
*OPTIONAL.
capacitor (±.1µF to 1±µF) to GND.
Figure 1. Noise-Reduction Capacitor
Detailed Description
Wideband Noise Reduction
up to 3±±µA beyond the nominal supply current. The
input voltage source must be capable of providing this
current to ensure reliable turn-on.
To improve wideband noise and transient power-supply
noise, add a ±.1µF capacitor to NR (Figure 1). Larger
values do not improve noise appreciably. A ±.1µF NR
capacitor reduces the noise from 6±nV/√Hz to
35nV/√Hz for the 2.±48V output. Noise in the power-
supply input can affect output noise, but can be
reduced by adding an optional bypass capacitor
between IN and GND, as shown in the Typical
Operating Circuit.
Thermal Hysteresis
Thermal hysteresis is the change of output voltage at
A
T
= +25°C before and after the device is cycled over
its entire operating temperature range. The typical ther-
mal hysteresis value is 2±ppm (SO package).
Turn-On Time
These devices typically turn on and settle to within
±.1ꢀ of their final value in 2±±µs to 2ms depending on
the device. The turn-on time can increase up to 4ms
with the device operating at the minimum dropout volt-
age and the maximum load. A noise reduction capaci-
tor of ±.1µF increases the turn-on time to 2±ms.
Output Bypassing
The MAX6126 requires an output capacitor between
±.1µF and 1±µF. Locate the output capacitor as close
to OUTF as possible. For applications driving switching
capacitive loads or rapidly changing load currents, it is
advantageous to use a 1±µF capacitor in parallel with a
±.1µF capacitor. Larger capacitor values reduce tran-
sients on the reference output.
Output Force and Sense
The MAX6126 provides independent connections for the
power-circuit output (OUTF) supplying current into a
load, and for the circuit input regulating the voltage
applied to that load (OUTS). This configuration allows for
the cancellation of the voltage drop on the lines connect-
ing the MAX6126 and the load. When using the Kelvin
connection made possible by the independent current
and voltage connections, take the power connection to
the load from OUTF, and bring a line from OUTS to join
the line from OUTF, at the point where the voltage accu-
Supply Current
The quiescent supply current of the series-mode
MAX6126 family is typically 38±µA and is virtually inde-
pendent of the supply voltage, with only a 2µA/V (max)
variation with supply voltage.
When the supply voltage is below the minimum speci-
fied input voltage during turn-on, the device can draw
Maxim Integrated
14
MAX6126
Ultra-High-Precision, Ultra-Low-Noise,
Series Voltage Reference
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.
IN
I
SOURCE
Applications Information
MAX6126
Precision Current Source
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.
OUTF
OUTS
R
GND
GNDS
High-Resolution DAC and Reference from
a Single Supply
Figure 3 shows a typical circuit providing the reference
for a high-resolution, 16-bit MAX541 D/A converter.
V
/ R = I
SOURCE
OUT(NOMINAL)
Temperature Coefficient vs. Operating
Temperature Range for a 1 LSB Maximum
Error
Figure 2. Precision Current Source
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
3V SUPPLY
V
IN
DD
range (T
- T
) with the converter resolution as a
MIN
MAX
parameter. The graph assumes the reference voltage
temperature coefficient as the only parameter affecting
accuracy.
MAX6126
OUTF
MAX541
DAC
REF
OUT
ANALOG
OUTPUT
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.
OUTS
GND
GND
GNDS
Figure 3. 14-Bit High-Resolution DAC and Positive Reference
from a Single 3V Supply
Maxim Integrated
15
MAX6126
Ultra-High-Precision, Ultra-Low-Noise,
Series Voltage Reference
10,000
1000
100
8 BIT
TEMPERATURE
10
10 BIT
COEFFICIENT
(ppm/°C)
12 BIT
1
14 BIT
16 BIT
0.1
18 BIT
20 BIT
0.01
100
1
10
OPERATING TEMPERATURE RANGE (T - T ) (°C)
MAX MIN
Figure 4. Temperature Coefficient vs. Operating Temperature Range for a 1 LSB Maximum Error
Typical Operating Circuit
Chip Information
PROCESS: BiCMOS
(V
+ 200mV) TO 12.6V INPUT
OUT
IN
REFERENCE
OUTPUT
OUTF
OUTS
MAX6126
*
NR
LOAD
*
GND
GNDS
*OPTIONAL.
Maxim Integrated
16
MAX6126
Ultra-High-Precision, Ultra-Low-Noise,
Series Voltage Reference
Ordering Information (continued)
OUTPUT
VOLTAGE
(V)
MAXIMUM TEMPCO
(-40°C to +85°C)
(ppm/°C)
PIN-
MAXIMUM INITIAL
ACCURACY (%)
PART
TEMP RANGE
PACKAGE
MAX6126B21+
-4±°C to +125°C
-4±°C to +125°C
-4±°C to +125°C
-4±°C to +125°C
-4±°C to +125°C
-4±°C to +125°C
-4±°C to +125°C
-4±°C to +125°C
-4±°C to +125°C
-4±°C to +125°C
-4±°C to +125°C
-4±°C to +125°C
-4±°C to +125°C
-4±°C to +125°C
-4±°C to +125°C
-4±°C to +125°C
-4±°C to +125°C
-4±°C to +125°C
-4±°C to +125°C
-4±°C to +125°C
8 µMAX
8 SO
2.±48
2.5±±
2.5±±
2.5±±
2.5±±
2.8±±
2.8±±
3.±±±
3.±±±
3.±±±
3.±±±
4.±96
4.±96
4.±96
4.±96
4.±96
5.±±±
5.±±±
5.±±±
5.±±±
±.1
±.±2
±.±6
±.±6
±.1
7
3
5
3
7
3
7
3
5
3
7
3
5
5
3
7
3
5
3
7
MAX6126AASA25+
MAX6126BASA25+
MAX6126A25+
8 SO
8 µMAX
8 µMAX
8 µMAX
8 µMAX
8 SO
MAX6126B25+
MAX6126A28+
±.±6
±.1
MAX6126B28+
MAX6126AASA3±+
MAX6126BASA3±+
MAX6126A3±+
±.±2
±.±6
±.±6
±.1
8 SO
8 µMAX
8 µMAX
8 SO
MAX6126B3±+
MAX6126AASA41+
MAX6126BASA41+
MAX6126BASA41/V+
MAX6126A41+
±.±2
±.±6
±.±6
±.±6
±.1
8 SO
8 SO
8 µMAX
8 µMAX
8 SO
MAX6126B41+
MAX6126AASA5±+
MAX6126BASA5±+
MAX6126A5±+
±.±2
±.±6
±.±6
±.1
8 SO
8 µMAX
8 µMAX
MAX6126B5±+
+Denotes a lead(Pb)-free/RoHS-compliant package.
/V denotes an automotive qualified part.
Package Information (continued)
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.
LꢂND
PꢂTTERN NO.
PꢂCKꢂGE TYPE
PꢂCKꢂGE CODE
OUTLꢁNE NO.
90-0092
8 µMAX
8 SO
U8+1
S8+4
21-0036
21-0041
90-0096
Maxim Integrated
17
MAX6126
Ultra-High-Precision, Ultra-Low-Noise,
Series Voltage Reference
Revision History
REVISION
NUMBER
REVISION
DATE
DESCRIPTION
PAGES CHANGED
±
1
2
3
4
5
6
1±/±2
Initial release
—
1, 16
3/±3
Remove “future product” and “contact factory” notes
Add “A” grade devices
6/±3
1, 16
12/±3
7/±4
Change µMAX part number
1, 16
Add top mark to Ordering Information
1, 16
12/1±
8/12
Add 2.8V option, add lead-free options, update Package Information
Added automotive package, MAX6126BASA41/V+ to data sheet
1, 2, 4, 15, 16
17
Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent
licenses are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and
max limits) shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance.
18 ________________________________Maxim Integrated 160 Rio Robles, San Jose, CA 95134 USA 1-408-601-1000
© 2±12 Maxim Integrated Products, Inc.
Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc.
相关型号：
MAX6126BASA50+T
Three Terminal Voltage Reference, 1 Output, 5V, BICMOS, PDSO8, 0.150 INCH, ROHS COMPLIANT, MS-012AA, SOIC-8
MAXIM
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