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| 型號(hào)： | 5962-89581012C |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類(lèi)： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | 1-OUTPUT THREE TERM VOLTAGE REFERENCE, 10 V, CQCC20 |
| 文件頁(yè)數(shù)： | 6/16頁(yè) |
| 文件大小： | 956K |
| 代理商： | 5962-89581012C |
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MAX6143
High-Precision Voltage Reference with
Temperature Sensor
14
______________________________________________________________________________________
Temp Output
The MAX6143 provides a temperature output propor-
tional to die temperature. TEMP can be calculated from
the following formula:
TEMP (V) = TJ (°K) x n
where TJ = the die temperature,
n = the temperature multiplier,
TA = the ambient temperature.
Self-heating affects the die temperature and converse-
ly, the TEMP output. The TEMP equation assumes the
output is not loaded. If device power dissipation is neg-
ligible, then TJ ≈ TA.
Applications Information
Bypassing/Output Capacitance
For the best line-transient performance, decouple the
input with a 0.1F ceramic capacitor as shown in the
Typical Operating Circuit. Place the capacitor as close
to IN as possible. When transient performance is less
important, no capacitor is necessary.
The MAX6143 does not require an output capacitor for
stability and is stable with capacitive loads up to 100F.
In applications where the load or the supply can experi-
ence step changes, a larger output capacitor reduces
the amount of overshoot (undershoot) and improves the
circuit’s transient response. Place output capacitors as
close to the device as possible for best performance.
Supply Current
The MAX6143 consumes 340A of quiescent supply
current. This improved efficiency reduces power dissi-
pation and extends battery life.
Shutdown
The active-low shutdown feature reduces supply cur-
rent to 0.01A (typ), further extending battery life.
Connect SHDN to GND to activate shutdown. Connect
SHDN to IN for normal operation.
Thermal Hysteresis
Thermal 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 ther-
mal hysteresis value is 120ppm.
Turn-On Time
The MAX6143 typically turns on and settles to within
0.1% of the preset output voltage in 150s (2.5V
output). The turn-on time can increase up to 150s with
the device operating at a 1F load.
Short-Circuited Outputs
The MAX6143 features a short-circuit-protected output.
Internal circuitry limits the output current to 60mA when
short circuiting the output to ground. The output cur-
rent is limited to 3mA when short circuiting the output
to the input.
n
Vat T
T
mV K
TEMP
J
(
)
./
=
°
0
19
TEMPERATURE
COEFFICIENT
(ppm/°C)
110
100
16-BIT
14-BIT
12-BIT
10-BIT
8-BIT
0.01
0.1
10
100
1000
1
10,000
18-BIT
20-BIT
OPERATING TEMPERATURE RANGE (TMAX - TMIN) (°C)
Figure 1. Temperature Coefficient vs. Operating Temperature Range for a 1 LSB Maximum Error
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