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PDF MAX6034 Data sheet ( Hoja de datos )
| Número de pieza | MAX6034 | |
| Descripción | Precision / Micropower / Low-Dropout / SC70 Series Voltage Reference | |
| Fabricantes | Maxim Integrated | |
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Hay una vista previa y un enlace de descarga de MAX6034 (archivo pdf) en la parte inferior de esta página. Total 13 Páginas | ||
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19-2428; Rev 0; 4/02
Precision, Micropower, Low-Dropout, SC70
Series Voltage Reference
General Description
The MAX6034 family of precision, low-dropout, microp-
ower voltage references are available in the miniature
3-pin SC70 surface-mount package. They feature a
proprietary temperature coefficient curvature-correction
circuit and laser-trimmed, thin-film resistors that result
in a low temperature coefficient of 30ppm/°C (max) and
initial accuracy of ±0.20% (max). These devices are
available over the extended temperature range of -40°C
to +85°C.
The MAX6034 family of series-mode voltage references
typically draw only 90µA of supply current and can
source 1mA and sink 200µA of load current. Unlike
conventional shunt-mode (two terminal) references that
waste supply current and require an external resistor,
devices in the MAX6034 family offer supply current that
is virtually independent of supply voltage (16µA/V, max
variation) and do not require an external resistor. These
internally compensated devices do not require an
external compensation capacitor, but are stable with up
to 1µF of load capacitance. Eliminating the external
compensation capacitor saves valuable board space in
space-critical applications. The low dropout voltage
and supply-independent, ultra-low supply current make
the MAX6034 ideal for battery-powered applications.
Applications
Hand-Held Equipment
Data-Acquisition Systems
Industrial and Process Control Systems
Battery-Operated Equipment
Hard-Disk Drives
Typical Operating Circuit
+SUPPLY INPUT (SEE SELECTOR GUIDE)
Features
o Ultra-Small, 3-Pin SC70 Package
o ±0.2% (max) Initial Accuracy
o 30ppm/°C (max) Temperature Coefficient
o 90µA Supply Current
o 200mV (max) Dropout Voltage at 1mA Load
Current
o Stable with CLOAD = 0 to 1µF
o No Output Capacitor Needed
Ordering Information
PART
TEMP RANGE
MAX6034AEXR21-T
MAX6034BEXR21-T
MAX6034AEXR25-T
MAX6034BEXR25-T
MAX6034AEXR30-T
MAX6034BEXR30-T
MAX6034AEXR33-T
MAX6034BEXR33-T
MAX6034AEXR41-T
MAX6034BEXR41-T
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-
PACKAGE
3 SC70-3
3 SC70-3
3 SC70-3
3 SC70-3
3 SC70-3
3 SC70-3
3 SC70-3
3 SC70-3
3 SC70-3
3 SC70-3
TOP
MARK
AJH
AJM
AJI
AJN
AJJ
AJO
AJK
AJP
AJL
AJQ
PART
MAX6034_EXR21-T
MAX6034_EXR25-T
MAX6034_EXR30-T
MAX6034_EXR33-T
MAX6034_EXR41-T
VOUT
2.048
2.500
3.000
3.300
4.096
Selector Guide
INPUT VOLTAGE (V)
2.5 to 5.5
(VOUT + 200mV) to 5.5
(VOUT + 200mV) to 5.5
(VOUT + 200mV) to 5.5
(VOUT + 200mV) to 5.5
IN
OUT
*
MAX6034
GND
*CAPACITOR IS OPTIONAL.
REFERENCE
OUT
TOP VIEW
Pin Configuration
IN 1
OUT 2
MAX6034
3 GND
SC70
________________________________________________________________ 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  
Precision, Micropower, Low-Dropout, SC70
Series Voltage Reference
ELECTRICAL CHARACTERISTICS–MAX6034_33 (VOUT = 3.300V)
(VIN = 5V, IOUT = 0, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)
PARAMETER
OUTPUT
Output Voltage
Output Voltage Temperature
Coefficient (Note 2)
SYMBOL
CONDITIONS
VOUT
TCVOUT
TA = +25°C
MAX6034A_33
MAX6034B_33
MAX6034A_33 (±0.2%)
MAX6034B_33 (±0.4%)
MIN TYP
3.293
3.287
3.300
3.300
7
7
Line Regulation
Load Regulation
OUT Short-Circuit Current
Dropout Voltage
Temperature Hysteresis
∆VOUT/
∆VIN
∆VOUT/
∆IOUT
ISC
VIN - VOUT
∆VOUT/
cycle
(VOUT + 200mV) ≤ VIN ≤ 5.5V
Sourcing: 0 ≤ IOUT ≤ 1mA
Sinking: 0 ≤ IOUT ≤ 200µA
Short to GND
Short to IN
IOUT = 1mA (Note 5)
(Note 3)
45
0.3
3
13
4
70
100
Long-Term Stability
∆VOUT/
time
1000hr at TA = +25°C
90
DYNAMIC
Noise Voltage
eOUT
Ripple Rejection
∆VOUT/
∆VIN
Turn-On Settling Time
Capacitive-Load Stability Range
INPUT
tR
COUT
f = 0.1Hz to 10Hz
f = 10Hz to 10kHz
VIN = 5V ±100mV, f = 120Hz
To VOUT = 0.1% of final value,
COUT = 50pF
(Note 4)
73
88
76
200
0
Supply Voltage Range
VIN Guaranteed by line-regulation test
VOUT
+ 0.2
Quiescent Supply Current
Change in Supply Current Per
Change in Input Voltage
IIN
∆IIN/∆VIN (VOUT + 200mV) ≤ VIN ≤ 5.5V
95
3.8
MAX UNITS
3.307
3.313
30
75
V
ppm/°C
300 µV/V
1.3
mV/mA
8.6
mA
200 mV
ppm
ppm/
1000hr
µVP-P
µVRMS
dB
µs
1 µF
5.5 V
125 µA
16 µA/V
_______________________________________________________________________________________ 5
5 Page 
Precision, Micropower, Low-Dropout, SC70
Series Voltage Reference
Pin Description
PIN NAME
FUNCTION
1 IN Supply Voltage Input
2
OUT
Reference Voltage Output
3
GND
Ground
Detailed Description
The MAX6034 family of precision bandgap references
use a proprietary temperature coefficient curvature-cor-
rection circuit and laser-trimmed, thin-film resistors,
resulting in a low temperature coefficient of less than
30ppm/°C and initial accuracy of better than 0.2%.
These devices can source up to 1mA and sink up to
200µA with less than 200mV of dropout voltage, making
them attractive for use in low-voltage applications.
Applications Information
Input Bypassing
For the best line-transient performance, decouple the
input with a 0.1µF ceramic capacitor as shown in the
Typical Operating Circuit. Locate the capacitor as
close to IN as possible.
Output/Load Capacitance
Devices in the MAX6034 family do not require an output
capacitor for frequency stability. They are stable for
capacitive loads from 0 to 1µF. However, in applica-
tions where the load or the supply can experience step
changes, an output capacitor reduces the amount of
overshoot (or undershoot) and improves the circuit’s
transient response. Many applications do not need an
external capacitor, and the MAX6034 can offer a signifi-
cant advantage in these applications when board
space is critical.
Supply Current
The quiescent supply current of the series-mode
MAX6034 family is typically 90µA and is virtually inde-
pendent of the supply voltage, with only a 16µA/V
(max) variation with supply voltage.
When the supply voltage is below the minimum-speci-
fied input voltage (as during turn-on), the device can
draw up to 50µA beyond the nominal supply current.
The input-voltage source must be capable of providing
this current to ensure reliable turn-on.
Output Voltage Hysteresis
Output voltage hysteresis is the change in the output
voltage at TA = +25°C before and after the device is
cycled over its entire operating temperature range.
Hysteresis is caused by differential package stress
appearing across the bandgap core transistors. The
typical temperature hysteresis value for the MAX6034
family is 100ppm.
Turn-On Time
These devices typically turn on and settle to within
0.1% of their final value in 85µs to 260µs depending on
the device. The turn-on time can increase up to 1.25ms
with the device operating at the minimum dropout volt-
age and the maximum load.
Temperature Coefficient vs.
Operating Temperature Range for a 1LSB
Maximum Error
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 1
shows the maximum allowable reference voltage tem-
perature coefficient to keep the conversion error to less
than 1LSB, as a function of the operating temperature
range (TMAX - TMIN) with the converter resolution as a
parameter. The graph assumes the reference-voltage
temperature coefficient as the only parameter affecting
accuracy.
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.
______________________________________________________________________________________ 11
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet MAX6034.PDF ] | |
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