MAX6078BMTA50+T [MAXIM]
Voltage Reference,;
| 型号： | MAX6078BMTA50+T |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | Voltage Reference, |
| 文件： | 总13页 (文件大小：986K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
EVALUATION KIT AVAILABLE
Click here for production status of specific part numbers.
MAX6078A/MAX6078B
Low-Power, Low-Drift,
Low-Noise Voltage Reference
General Description
Benefits and Features
The MAX6078 precision voltage reference family provides
low drift and low noise at a maximum power supply cur-
rent of only 15µA. Low-frequency noise is less than
● ±0.04% Initial Accuracy
● 10ppm/°C (Max) Temperature Drift
● 12µV Noise (0.1Hz to 10Hz) at 2.5V
PP
12µV (2.5V output voltage option) and the temperature
● 15µA Supply Current
PP
coefficient of the output voltage is less than 10ppm/°C.
● Long-Term Drift: 20ppm (Typ)
● 3mA Source/Sink Load Current
● Filter Option Reduces High Frequency Noise
● 100mV Dropout Voltage
● 1.5mm x 1.3mm (0.5mm pitch), 6-Bump WLP and
2mm x 3mm, 8-Pin TDFN-EP Packages
● Voltage Output Options: 1.25V, 2.048V, 2.5V, 3.0V,
3.3V, 4.096V, and 5.0V
The reference output can sink and source up to 3mA of
load current and the top grade provides an initial accuracy
of 0.04%. The low drift and low noise specifications enable
enhanced system accuracy, making these devices ideal
for high precision industrial applications. A noise reduction
(NR) input pin allows connection of an external capacitor
to reduce wideband noise. Available output voltages in-
clude 1.25V, 2.048V, 2.5V, 3.0V, 3.3V, 4.096V, and 5.0V.
Ordering Information appears at end of data sheet.
The tiny, 6-bump WLP and small, 8-pin TDFN-EP pack-
ages are suitable for systems where circuit board area is
limited. The operating input voltage can range from 2.3V
to 5.5V. Operation is specified over the extended industri-
al temperature range of -55°C to +125°C.
Simplified Block Diagram
IN
MAX6078
OUTS
Applications
OUTF
NR
EN
BANDGAP
● High-Accuracy Industrial and Process Control
● Precision Instrumentation
● High-Resolution ADCs and DACs
● Portable and Handheld Systems
GND
19-100579; Rev 0; 6/19
MAX6078A/MAX6078B
Low-Power, Low-Drift,
Low-Noise Voltage Reference
Absolute Maximum Ratings
OUTF to GND.............................................. -0.3V to (V + 0.3)V
Maximum Continuous Power Dissipation (T = +70°C) .
A
IN
OUTS to GND........................................................... -0.3V to +6V
IN to GND................................................................. -0.3V to +6V
EN to GND................................................................ -0.3V to +6V
TDFN (derate 16.7mW/°C above +70°C).................1333.3mW
WLP (derate 12.34mW/°C above +70°C)...................987.2mW
Operating Temperature Range...........................-55°C to +125°C
Storage Temperature Range ..............................-65°C to +150°C
Lead Temperature (soldering, 10s)...................................+300°C
Soldering Temperature (reflow) ........................................+260°C
NR to GND .................................................. -0.3V to (V + 0.3)V
IN
Current to/from OUTF.......................................................... 50mA
Current to/from OUTS/NR/EN ............................................. 20mA
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
8 TDFN
Package Code
T823+1C
21-0174
90-0091
Outline Number
Land Pattern Number
Thermal Resistance, Four-Layer Board:
Junction-to-Ambient (θ
)
60°C/W
11°C/W
JA
Junction-to-Case Thermal Resistance (θ
)
JC
8 WLP
Package Code
W61L1+1
Outline Number
21-100365
Land Pattern Number
Refer to Application Note 1891
Thermal Resistance, Four-Layer Board:
Junction-to-Ambient (θ
)
JA
81.03°C/W
N/A
Junction-to-Case Thermal Resistance (θ
)
JC
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
MAX6078A/MAX6078B
Low-Power, Low-Drift,
Low-Noise Voltage Reference
Electrical Characteristics – 2.5V
(V = +3.3V, I
IN
= 0mA, C
= 0.1µF, T = -55°C to +125°C, unless otherwise specified. Typical values are at T = +25°C (Note
OUT
OUT
A
A
1))
PARAMETER
Output Voltage
SYMBOL
CONDITIONS
MAX6078A, T = +25°C
MIN
-0.04
-0.08
TYP
MAX
+0.04
+0.08
10
UNITS
A
%
Accuracy
MAX6078B, T = +25°C
A
-40°C to +125°C (Note 2)
-55°C to +125°C (Note 2)
2
2
Output Voltage
Temperature Drift
TCV
ppm/°C
OUT
10
Over specified operating input voltage
range
Line Regulation
Load Regulation
10
5
175
µV/V
-3mA ≤ I
≤ +3mA
125
100
10
µV/mA
OUT
I
I
= 3mA (Note 3)
OUT
Dropout Voltage
Output Current
mV
mA
mA
= 100µA (Note 3)
OUT
I
Guaranteed by Load Regulation
Sourcing to ground
-3
+3
OUT
36
24
20
20
12
30
Short-Circuit Current
I
SC
Sinking current from V
IN
Long-Term Stability
Thermal Hysteresis
1000 hours at T = +25°C
A
ppm
ppm
(Note 4)
0.1Hz to 10Hz, C
= 0.1µF
µV
pp
OUT
10Hz to 10kHz, C
= 0.1μF
OUT
OUT
Output Noise Voltage
e
OUT
µV
RMS
10Hz to 10kHz, C
0.01µF
= 0.1μF, C
=
NR
20
f = 100Hz, C
f = 100Hz, C
f = 60Hz
= 0.1µF
580
385
50
Output Noise Spectral
Density
OUT
OUT
nV/ Hz
√
= 0.1μF, C
= 0.01μF
NR
Ripple Rejection
dB
Settling to 0.1%,
= 0.1μF
C
= 0.01μF
50
5
NR
C
OUT
Turn-On Settling Time
ms
Settling to 0.1%,
= 0.1μF
No C
NR
C
OUT
Settling to 0.1%,
= 0.1μF
C
= 0.01μF
30
3
NR
C
OUT
Enable Settling Time
t
ms
EN
Settling to 0.1%,
= 0.1µF
No C
NR
C
OUT
Capacitive-Load
Stability Range
0.1
2.7
4.7
5.5
µF
V
Supply Voltage
V
IN
www.maximintegrated.com
Maxim Integrated | 3
MAX6078A/MAX6078B
Low-Power, Low-Drift,
Low-Noise Voltage Reference
Electrical Characteristics – 2.5V (continued)
(V = +3.3V, I
IN
= 0mA, C
= 0.1µF, T = -55°C to +125°C, unless otherwise specified. Typical values are at T = +25°C (Note
OUT
OUT
A
A
1))
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
T
= +25ºC
10
15
A
A
µA
T
= -55ºC to
16.5
V
V
= 5V
+85ºC
IN
T
= -55ºC to
A
18
14
+125ºC
Quiescent Supply
Current
μA
I
IN
T
= +25ºC
9
A
A
T
= -55ºC to
15.5
µA
μA
µA
= 3.3V
+85ºC
IN
T
A
= -55ºC to
17
+125ºC
Shutdown Supply
Current
I
I
0.1
2
SD
EN
Enable Input Current
Enable Logic-High
Enable Logic-Low
0.1
µA
V
V
0.7 x V
IH
IN
V
0.3 x V
V
IL
IN
Note 1: Limits are 100% tested at T = +25°C. Limits over the operating temperature range and relevant supply voltage range are
A
guaranteed by design and characterization.
Note 2: Temperature coefficient is calculated using the “box method” which measures temperature drift as the maximum voltage
variation over a specified temperature range.
Note 3: Dropout voltage is defined as the minimum differential voltage (V - V
) at which V
decreases by 0.2% from its original
IN
OUT
OUT
value. VIN = 3.3V for output voltages of 1.25V, 2.048V, and 2.5V; V = 5V for output voltages of 3V, 3.3V, 4.096V; VIN
=
IN
5.5V for output voltage of 5V.
Note 4: Thermal hysteresis is defined as the change in +25°C output voltage before and after cycling the device from T
to T
.
MIN
MAX
www.maximintegrated.com
Maxim Integrated | 4
MAX6078A/MAX6078B
Low-Power, Low-Drift,
Low-Noise Voltage Reference
Typical Operating Characteristics
( V = 3.3V, I
= 0mA, C
= 0.1µF to GND, T = +25°C, unless otherwise noted.)
OUT A
IN
OUT
www.maximintegrated.com
Maxim Integrated | 5
MAX6078A/MAX6078B
Low-Power, Low-Drift,
Low-Noise Voltage Reference
Typical Operating Characteristics (continued)
( V = 3.3V, I
= 0mA, C
= 0.1µF to GND, T = +25°C, unless otherwise noted.)
OUT A
IN
OUT
www.maximintegrated.com
Maxim Integrated | 6
MAX6078A/MAX6078B
Low-Power, Low-Drift,
Low-Noise Voltage Reference
Typical Operating Characteristics (continued)
( V = 3.3V, I
= 0mA, C
= 0.1µF to GND, T = +25°C, unless otherwise noted.)
OUT A
IN
OUT
www.maximintegrated.com
Maxim Integrated | 7
MAX6078A/MAX6078B
Low-Power, Low-Drift,
Low-Noise Voltage Reference
Pin Configurations
6 WLP
TOP VIEW
MAX6078
OUTS OUTF
NR
A1
B1
A2
B2
A3
B3
GND
IN
EN
8 TDFN-EP
TOP VIEW
NC NR OUTF OUTS
8
7
6
5
MAX6078
EP*
+
1
2
3
4
EN
IN
NC
GND
TDFN-EP
2mm x 3mm
*EP = EXPOSED PAD
Pin Description
PIN
NAME
FUNCTION
8 TDFN-
EP
6 WLP
A1
Voltage Reference Output Sense. Connect OUTF and OUTS as close as possible to the
load.
5
6
7
OUTS
OUTF
NR
Voltage Reference Force Output. Connect OUTF and OUTS as close as possible to the
load. Bypass OUTF with a capacitor to GND.
A2
Noise Reduction Input. Connect a 0.01μF capacitor from NR to ground to provide wideband
noise filtering. Leave unconnected if not used.
A3
B1
B2
B3
—
4
2
GND
IN
Ground
Supply Input
1
EN
NC
EP
Enable. Drive high to enable. Drive low to disable.
No Connect. Not internally connected. May be connected to GND.
Exposed Pad. EP is internally connected to GND. Connect EP to GND.
3, 8
EP
—
www.maximintegrated.com
Maxim Integrated | 8
MAX6078A/MAX6078B
Low-Power, Low-Drift,
Low-Noise Voltage Reference
Functional Diagram
Typical Operating Circuit
V
IN
IN
0.1µF
MAX6078
OUTS
OUTF
V
OUT
NR
BANDGAP
0.01µF
0.1µF
R
L
EN
GND
(SHUTDOWN
CONTROL)
www.maximintegrated.com
Maxim Integrated | 9
MAX6078A/MAX6078B
Low-Power, Low-Drift,
Low-Noise Voltage Reference
Detailed Description
Wideband Noise Reduction (NR)
To improve wideband noise and transient power supply noise, connect a 0.01µF capacitor from NR to GND (see
the Typical Operating Characteristics). Larger values do not appreciably improve noise reduction. A 0.01µF capacitor
reduces the spectral noise density at 100Hz from 580nV/√Hz to 385nV/√Hz for the 2.5V output version. Noise at the input
pin can affect output noise, but can be reduced by connecting an optional bypass capacitor between IN and GND, as
shown in Figure 1.
OUTF
SUPPLY
IN
LOAD
OUTS
NR
MAX6078
GND
EN
0.01µF*
* OPTIONAL
Figure 1. Noise Reduction Capacitor
Output Bypassing
Use an output capacitor with a value between 0.1μF and 4.7µF. Place the output capacitor as close to OUTF as possible.
For applications driving switching capacitive loads or rapidly changing load currents, use a 0.1μF capacitor in parallel
with a larger load capacitor to reduce equivalent series resistance (ESR). Larger capacitor values and lower ESR reduce
transients on the reference output.
Turn-On Time
These references typically turn on and settle to within 0.1% of their final value in 5ms with no capacitive loads at NR pin.
A 0.1µF load capacitor at OUTF and a 0.01µF noise reduction capacitor connected to the NR input increase the turn-on
time to approximately 50ms.
Output Force and Sense
These references provide independent connections for the force output (OUTF), which supplies current to the load and
the feedback input that regulates the load voltage through the output sense pin (OUTS). This configuration allows for the
cancellation of the voltage drop on the lines connecting the reference to the load. Connect OUTF to the load and connect
OUTS to OUTF at the point where the voltage accuracy is needed (Figure 1).
Shutdown
Although the operating power supply current of these references is very low, there are some cases that require even
lower supply current during shutdown conditions. Pulling EN low disables the output with an internal resistive load to
ground and forces the quiescent current to less than 100nA. Pulling EN high enables normal operation. The return to
normal operation occurs within the 3ms enable time delay typically.
Thermal Hysteresis
Thermal hysteresis is the change of output voltage at T = +25°C before and after the device is cycled over its entire
A
operating temperature range. The typical thermal hysteresis value is 20ppm.
www.maximintegrated.com
Maxim Integrated | 10
MAX6078A/MAX6078B
Low-Power, Low-Drift,
Low-Noise Voltage Reference
Applications Information
Precision Current Source
Figure 2 shows a precision current source. The OUTF output provides the bias current for the bipolar transistor. OUTS
and GND sense the voltage across the resistor and adjust the current sourced by OUTF accordingly. The voltage range
of OUTF is set by the reference output voltage (OUTS) and the V (BJT) of the output external device:
BE
V
OUTF
= V + V
BE REF
where:
V
V
V
is voltage on OUTF pin,
OUTF
is base-emitter drop across BJT,
BE
is the actual voltage reference output this part is supposed to provide.
REF
Therefore, the input supply voltage requirement for the MAX6078 is as follows:
≥ V (dropout voltage) + V max + V
REF
V
IN
DROP
BE
where:
V
DROP
is dropout voltage of voltage reference.
IN
I
SOURCE
MAX6078
OUTF
OUTS
R
GND
V
/R = I
SOURCE
OUT(NOMINAL)
Figure 2. Precision Current Source
www.maximintegrated.com
Maxim Integrated | 11
MAX6078A/MAX6078B
Low-Power, Low-Drift,
Low-Noise Voltage Reference
Ordering Information
V
OUT
(V)
ACCURACY (%)
0.04
0.04
0.04
0.04
0.04
0.04
0.04
0.08
0.08
0.08
0.08
0.08
0.08
0.08
0.04
0.04
0.04
0.04
0.04
0.04
0.04
0.08
0.08
0.08
0.08
0.08
0.08
0.08
PART NUMBER
MAX6078AMWT12+T*
MAX6078AMWT21+T*
MAX6078AMWT25+T
MAX6078AMWT30+T*
MAX6078AMWT33+T*
MAX6078AMWT41+T*
MAX6078AMWT50+T*
MAX6078BMWT12+T*
MAX6078BMWT21+T*
MAX6078BMWT25+T*
MAX6078BMWT30+T*
MAX6078BMWT33+T*
MAX6078BMWT41+T*
MAX6078BMWT50+T*
MAX6078AMTA12+T*
MAX6078AMTA21+T*
MAX6078AMTA25+T*
MAX6078AMTA30+T*
MAX6078AMTA33+T*
MAX6078AMTA41+T*
MAX6078AMTA50+T*
MAX6078BMTA12+T*
MAX6078BMTA21+T*
MAX6078BMTA25+T*
MAX6078BMTA30+T*
MAX6078BMTA33+T*
MAX6078BMTA41+T*
MAX6078BMTA50+T*
TEMP RANGE
PIN-PACKAGE
6 WLP
TOP MARK
-55°C to +125°C
-55ºC to +125ºC
-55°C to +125°C
-55°C to +125°C
-55°C to +125°C
-55°C to +125°C
-55°C to +125°C
-55°C to +125°C
-55°C to +125°C
-55°C to +125°C
-55°C to +125°C
-55°C to +125°C
-55°C to +125°C
-55°C to +125°C
-55°C to +125°C
-55°C to +125°C
-55°C to +125°C
-55°C to +125°C
-55°C to +125°C
-55°C to +125°C
-55°C to +125°C
-55°C to +125°C
-55°C to +125°C
-55°C to +125°C
-55°C to +125°C
-55°C to +125°C
-55°C to +125°C
-55°C to +125°C
1.250
2.048
2.500
3.000
3.300
4.096
5.000
1.250
2.048
2.500
3.000
3.300
4.096
5.000
1.250
2.048
2.500
3.000
3.300
4.096
5.000
1.250
2.048
2.500
3.000
3.300
4.096
5.000
—
—
+AAE
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
6 WLP
6 WLP
6 WLP
6 WLP
6 WLP
6 WLP
6 WLP
6 WLP
6 WLP
6 WLP
6 WLP
6 WLP
6 WLP
8 TDFN-EP
8 TDFN-EP
8 TDFN-EP
8 TDFN-EP
8 TDFN-EP
8 TDFN-EP
8 TDFN-EP
8 TDFN-EP
8 TDFN-EP
8 TDFN-EP
8 TDFN-EP
8 TDFN-EP
8 TDFN-EP
8 TDFN-EP
+ Denotes a lead(Pb)-free/RoHS-compliant package.
T = Tape and reel.
*Future product—contact factory for availability.
www.maximintegrated.com
Maxim Integrated | 12
MAX6078A/MAX6078B
Low-Power, Low-Drift,
Low-Noise Voltage Reference
Revision History
REVISION REVISION
PAGES
CHANGED
DESCRIPTION
NUMBER
DATE
0
6/19
Initial release
—
For pricing, delivery, and ordering information, please visit Maxim Integrated’s online storefront at https://www.maximintegrated.com/en/storefront/storefront.html.
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.
Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc.
© 2019 Maxim Integrated Products, Inc.
相关型号：
MAX607ESA
Low-Profile, 5V/12V or Adjustable, Step-Up DC-DC Converters for Flash Memory/PCMCIA Cards
MAXIM
MAX607ESA+
Switching Regulator, Current-mode, 0.135A, 500kHz Switching Freq-Max, CMOS, PDSO8, SO-8
MAXIM
MAX607ESA+T
Switching Regulator, Current-mode, 0.135A, 500kHz Switching Freq-Max, CMOS, PDSO8, SO-8
MAXIM
MAX607EUA
Low-Profile, 5V/12V or Adjustable, Step-Up DC-DC Converters for Flash Memory/PCMCIA Cards
MAXIM
©2020 ICPDF网 联系我们和版权申明