MAX6029ESA41T Maxim Integrated Products, Inc., MAX6029ESA41T Datasheet - Page 13

• Manufacturer Part Number: MAX6029ESA41T
• Description: Max6029 Ultra-low-power Precision Series Voltage Reference
• Manufacturer: Maxim Integrated Products, Inc.

The MAX6029 does not require an input bypass capac-
itor. For improved transient performance, bypass the
input to ground with a 0.1µF ceramic capacitor. Place
the capacitor as close to IN as possible.
The MAX6029 does not require an output capacitor for
stability. The MAX6029 is stable driving capacitive
loads from 0 to 100pF and 0.1µF to 10µF when sourc-
ing current and from 0 to 0.4µF when sinking current. In
applications where the load or the supply can experi-
ence step changes, an output capacitor reduces the
amount of overshoot (undershoot) and improves the cir-
cuit’s transient response. Many applications do not
require an external capacitor, and the MAX6029 offers
a significant advantage in applications where board
space is critical.
The quiescent supply current of the series-mode
MAX6029 is very small, 5.25µA (max), and is very sta-
ble against changes in the supply voltage with only
Figure 1. Temperature Coefficient vs. Operating Temperature Range for a 1 LSB Maximum Error
SOT23
3, 4
1
2
5
PIN
1, 3, 5, 7,
SO
2
4
8
6
Applications Information
______________________________________________________________________________________
TEMPERATURE
COEFFICIENT
(ppm/°C)
NAME
GND
OUT
N.C.
IN
10,000
1000
0.01
100
0.1
10
1
Positive Voltage Supply
Ground
No Connection. Leave
unconnected or connect to
ground.
Reference Output
Pin Description
1
Load Capacitance
Ultra-Low-Power Precision Series
Input Bypassing
Supply Current
FUNCTION
OPERATING TEMPERATURE RANGE (T
10
1.5µA/V (max) variation with supply voltage. The
MAX6029 family draws load current from the input volt-
age source only when required, so supply current is not
wasted and efficiency is maximized at all input volt-
ages. This improved efficiency reduces power dissipa-
tion and extends battery life.
Output thermal hysteresis is the change of the output
voltage at T
cycled over its entire operating temperature range.
Hysteresis is caused by differential package stress
appearing across the device.
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 temper-
ature coefficient to keep the conversion error to less than
1 LSB, as a function of the operating temperature range
(T
ter. The graph assumes the reference-voltage tempera-
ture coefficient as the only parameter affecting accuracy.
In reality, the absolute static accuracy of a data convert-
er is dependent on the combination of many parameters
such as integral nonlinearity, differential nonlinearity, off-
set error, gain error, as well as voltage reference
changes.
These devices turn on and settle to within 0.1% of their
final value in less than 1ms. The turn-on time increases
when heavily loaded and operating close to dropout.
MAX
Temperature Coefficient vs. Operating
MAX
- T
- T
MIN
MIN
Voltage Reference
) (°C)
A
) with the converter resolution as a parame-
= +25°C before and after the device is
Temperature Range for a 1LSB
Output Thermal Hysteresis
100
10-BIT
12-BIT
14-BIT
16-BIT
18-BIT
20-BIT
8-BIT
Maximum Error
Turn-On Time
13