MAX5500/MAX5501
Low-Power, Quad, 12-Bit
Voltage-Output DACs with Serial Interface
6 _______________________________________________________________________________________
Pin Description
PIN NAME FUNCTION
1 AGND Analog Ground
2 FBA DAC A Output Amplifier Feedback
3 OUTA DAC A Output Voltage
4 OUTB DAC B Output Voltage
5 FBB DAC B Output Amplifier Feedback
6 REFAB DAC A/DAC B Reference Voltage Input
7 CL
Active-Low Clear Input. CL clears all DACs and registers. CL resets all outputs (OUT_, UPO, and DOUT)
to 0.
8 CS Active-Low Chip-Select Input
9 DIN Serial Data Input
10 SCLK Serial Clock Input
11 DGND Digital Ground
12 DOUT Serial Data Output
13 UPO User-Programmable Logic Output
14 PDL Active-Low Power-Down Lockout. Drive PDL low to lock out software shutdown.
15 REFCD DAC C/DAC D Reference Voltage Input
16 FBC DAC C Output Amplifier Feedback
17 OUTC DAC C Output Voltage
18 OUTD DAC D Output Voltage
19 FBD DAC D Output Amplifier Feedback
20 V
DD
Positive Power Supply
DYNAMIC RESPONSE 3V
MAX5500 toc12
10µs/div
OUTA
0.5V/div
V
REF
= 1.5V, R
L
= 5kΩ, C
L
= 100pF
SWITCHING FROM CODE 000 hex TO FB4 hex
OUTPUT AMPLIFIER GAIN = +1
DIGITAL FEEDTHROUGH 3V
(SCLK = 100kHz)
MAX5500 toc13
4µs/div
SCLK
1V/div
OUTA
AC-COUPLED
10mV/div
V
REF
= 1.5V, R
L
= 5kΩ, C
L
= 100pF
V
CS
= V
PDL
= V
CL
= 3.3V, V
DIN
= 0V
DACA CODE SET TO 800 hex
DIGITAL FEEDTHROUGH 5V
(SCLK = 100kHz)
MAX5500 toc14
2µs/div
SCLK
2V/div
OUTA
AC-COUPLED
10mV/div
V
REF
= 2.5V, R
L
= 5kΩ, C
L
= 100pF
V
CS
= V
PDL
= V
CL
= 5V, V
DIN
= 0V
DACA CODE SET TO 800 hex
Typical Operating Characteristics (continued)
(T
A
= +25°C, unless otherwise noted.)
