Analog Devices Linear Technology DC2432B Demo Manual

DESCRIPTION
Demonstration circuit 2432B features the
sion dual output reference that combines the performance
of a low drift low noise reference and a linear regulator.
Demonstration circuits are available with 1.25V, 2.5V, 3.0V,
3.3V, 4.096V and 5V output option parts. Both outputs
are ideal for driving the precision reference inputs of high
resolution ADCs and DACs, even with heavy loading while
simultaneously acting as output supplies for powering mi-
crocontrollers and other supporting devices. Both outputs
have the same precision specifications and track each
PERFORMANCE SUMMARY
SYMBOL PARAMETER
V Input Supply Range
IN
V Output Voltage Accuracy
OUT
Temperature Drift
I Supply Current
Q
Load Regulation OUT1
Load Regulation OUT2
LT6658 BLOCK DIAGRAM
14
V
IN
DNC
4
16 DNC
15 NC
THERMAL
SHUTDOWN
BANDGAP
GND
1
GND
2
GND
6
GND
17
Precision Dual Output, High Current,
LT 6658, a preci-
®
Specifications are at T
CONDITIONS
0mA to 150mA
0mA to 50mA
9
OD
BUFFER 2
R4
R1
BUFFER 1
R2
BYPASS NR
3 5
DEMO MANUAL DC2432B
Low Noise, Voltage Reference
other over temperature. Each output can be configured
with external resistors to give an output voltage up to 6V.
Using Kelvin connections, the LT6658 typically has
0.1ppm/mA load regulation with up to 150mA load
current. A noise reduction pin is available to band-limit
and lower the total integrated noise.
Design files for this circuit board are available at
http://www.linear.com/demo/DC2432B
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
Refulator is a trademark of Analog Devices, Inc. All other trademarks are the property of their
respective owners.
= 25°C
A
MIN
5V
–0.05
V
IN2
Voltage Option
10
(V)
1.2
V
OUT2_F
8
1.8
2.5
V
OUT2_S
7
3
3.3
V
IN1
11
5
V
OUT1_F
12
R3
V
OUT1_S
13
DC2432 BD
LT6658
TYP MAX
36
+0.05
10
2
2
3.75
R1 R2 R3, R4
(Ω) (Ω) (Ω)
400 9600 768
400 2903 705
400 OPEN 800
400 OPEN 800
400 OPEN 800
400 OPEN 800
UNITS
V
%
ppm
mA
µV/mA
µV/mA
dc2432bfb
1