max5523euat Maxim Integrated Products, Inc., max5523euat Datasheet - Page 17

• Manufacturer Part Number: max5523euat
• Description: Dual, Ultra-low-power, 10-bit, Voltage-output Dacs
• Manufacturer: Maxim Integrated Products, Inc.

See
MAX5522–MAX5525 with either one lithium-ion battery
or two alkaline batteries. The low current consumption
of the devices make the MAX5522–MAX5525 ideal for
battery-powered applications.
Figure
Figure
Figure
REFIN
3. Portable Application Using Two Alkaline Cells or One Lithium Coin Cell
4. Programmable Current Source Driving an LED
I
N
OF THE DAC INPUT CODE.
LED
3 for an illustration of how to power the
DAC
1/2 MAX5524
=
IS THE NUMERIC VALUE
V
Applications Information
REFIN
1024 R
DAC
______________________________________________________________________________________
0.1 F
N
DAC
1-Cell and 2-Cell Circuits
1.8V V
2.2V V
ALKALINE
LITHIUM
REFERENCE)
(1 A, 1.25V
MAX6006
SHUNT
3.3V
FB
3.3V
VOUT
LED
536k
V+
+1.25V
2N3904
R
10-Bit, Voltage-Output DACs
I
LED
0.01 F
REFIN
MAX5524
See the circuit in
configure the MAX5524/MAX5525 as a programmable
current source for driving an LED. The MAX5524/
MAX5525 drive a standard NPN transistor to program
the current source. The current source (I
in the equation in
Dual, Ultra-Low-Power,
DAC
Figure
Current-Output Transducer
REFIN
5. Transimpedance Configuration for a Voltage-Biased
V
GND
DD
1/2 MAX5524
V
BIAS
DAC
Programmable Current Source
TRANSDUCER
Figure
Figure
FB
VOUT
V
N
OF THE DAC INPUT CODE.
4.
OUT
DAC
4 for an illustration of how to
=
IS THE NUMERIC VALUE
V
V
I
REFIN
OUT
T
1024
(1.22mV / LSB)
VOUT
R
N
N
OF THE DAC INPUT CODE.
V
DAC
BIAS
DAC
IS THE NUMERIC VALUE
=
V
REFIN
V
LED
OUT
1024
= V
) is defined
N
BIAS
DAC
V
OUT
+ (I
T
R)
17