MAX5409EEE+ Maxim Integrated Products, MAX5409EEE+ Datasheet - Page 10
![IC POT DGTL DUAL AUDIO 16-QSOP](/photos/6/61/66127/175-16-qsop_sml.jpg)
MAX5409EEE+
Manufacturer Part Number
MAX5409EEE+
Description
IC POT DGTL DUAL AUDIO 16-QSOP
Manufacturer
Maxim Integrated Products
Datasheet
1.MAX5408EEE.pdf
(13 pages)
Specifications of MAX5409EEE+
Taps
32
Resistance (ohms)
10K
Number Of Circuits
2
Temperature Coefficient
35 ppm/°C Typical
Memory Type
Volatile
Interface
SPI, 3-Wire Serial
Voltage - Supply
2.7 V ~ 3.6 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
16-QSOP
Resistance In Ohms
10K
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Dual, Audio, Log Taper Digital Potentiometers
10
Figure 5. Daisy-Chaining of Serial Interfaces
circuit (see Figure 2). With zero-crossing enabled, the
MAX5408–MAX5411 change wiper position after 50ms
or when zero crossing is detected.
The power-on reset (POR) feature sets all the wipers to
the maximum attenuation (tap position 31, -62dB) at
power-up. If either V
on reset intiates when one of the supplies is brought
back to the operating voltage.
When mute is enabled, the wipers go to -90dB attenua-
tion. When mute is disabled, the wiper returns to its
position before mute was enabled. All wipers can be
muted simultaneously or independently.
Figure 3 shows the application of an attenuation control.
The op amps are connected in a follower configuration
with a fixed gain. The digitally controlled potentiometer
attenuates the input signal.
Figure 4 shows the application of stereo volume con-
trol using MAX5409/MAX5411. The op amps are con-
nected in a follower configuration with fixed gain. The
digitally controlled potentiometer attenuates the input
signals. The second wiper of each potentiometer con-
trols the signal amplitude at the rear set of speakers.
SDIN
SCLK
CS
______________________________________________________________________________________
SCLK
SDIN
CS
MAX5408–
MAX5411
DOUT
Applications Information
DD
SCLK
SDIN
CS
or V
Stereo Volume Control
MAX5408–
MAX5411
LOGIC
Attenuation Control
DOUT
is zero volts, a power-
Power-On Reset
Mute Function
SCLK
SDIN
CS
MAX5408–
MAX541
DOUT
TRANSISTOR COUNT: 12,875
PROCESS: BiCMOS
Figure 6. Gain Control
Figure 5 shows an application daisy-chaining the
serial-interfaces of the MAX5408–MAX5411. A single-
write command updates multiple devices from a single
digital port in this configuration (see Digital Serial
Interface section).
Figure 6 shows the application of a gain control.
Note: Muting the potentiometer creates unpredictable
behavior at the output of the op amp, and may seriously
degrade the performance of the op amp.
MAX5409ETE
MAX5410EEE -40°C to +85°C 16 QSOP
MAX5410ETE
MAX5411EEE -40°C to +85°C 16 QSOP
MAX5411ETE
Ordering Information (continued)
V
OUT0
PART
V
IN0
-40°C to +85°C 16 Thin QFN
-40°C to +85°C 16 Thin QFN
-40°C to +85°C 16 Thin QFN
TEMP RANGE
W0A
H0
L0
MAX5408–
MAX5411
Chip Information
PACKAGE
PIN-
L1
W1A
Daisy-Chaining
H1
Gain Control
V
IN1
WIPERS PER
RESISTOR
2
1
1
2
2
V
OUT1