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PDF MAX5408ETE Data sheet ( Hoja de datos )
| Número de pieza | MAX5408ETE | |
| Descripción | Dual / Audio / Log Taper Digital Potentiometers | |
| Fabricantes | Maxim Integrated | |
| Logotipo |  |
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19-2049; Rev 2; 9/02
Dual, Audio, Log Taper Digital Potentiometers
General Description
The MAX5408–MAX5411 dual, logarithmic taper digital
potentiometers, with 32-tap points each, replace
mechanical potentiometers in audio applications requir-
ing digitally controlled resistors. The MAX5408/
MAX5410 are dual potentiometers with one wiper per
potentiometer. The MAX5409/MAX5411 are dual poten-
tiometers with two wipers per potentiometer (see
Functional Diagram). An SPI™-compatible serial inter-
face controls the wiper positions. The MAX5408–
MAX5411 have a factory-set resistance of 10kΩ per
potentiometer. A zero-crossing detect feature mini-
mizes the audible noise generated by wiper transitions.
The MAX5408–MAX5411 have nominal temperature
coefficients of 35ppm/°C end-to-end and 5ppm/°C
ratiometric. The MAX5408–MAX5411 are available in
16-pin QSOP and 16-pin thin QFN packages and are
specified over the extended temperature range (-40°C
to +85°C).
Applications
Stereo Volume Control
Fading and Balancing Stereo Signals
Mechanical Potentiometer Replacement
Functional Diagram appears at end of data sheet.
SPI is a trademark of Motorola, Inc.
Features
o Log Taper with 2dB Steps Between Taps
o 32-Tap Positions for Each Wiper
o Small 16-Pin QSOP/QFN Packages
o Single-Supply Voltage Operation
+2.7V to +3.6V (MAX5408/MAX5409)
+4.5V to +5.5V (MAX5410/MAX5411)
o Low 0.5µA Standby Supply Current
o Zero-Crossing Detection for Clickless Switching
o Mute Function to -90dB
o 10kΩ Fixed Resistance Value
o 3-Wire SPI-Compatible Serial Data Interface
o Power-On Reset: Wiper Goes to Maximum
Attenuation
o Digital Output for Readback and Daisy-Chaining
Capabilities
Ordering Information
PART
TEMP RANGE
PIN-
PACKAGE
WIPERS PER
RESISTOR
MAX5408EEE -40°C to +85°C 16 QSOP
1
MAX5408ETE -40°C to +85°C 16 Thin QFN
1
MAX5409EEE -40°C to +85°C 16 QSOP
2
Ordering Information continued at end of data sheet.
Pin Configurations
TOP VIEW
DOUT 1
DIN 2
SCLK 3
CS 4
H0 5
L0 6
W0A 7
N.C. (W0B) 8
MAX5408-
MAX5411
QSOP
(5mm x 6mm)
16 VDD
15 VLOGIC
14 GND
13 AGND
12 H1
11 L1
10 W1A
9 N.C. (W1B)
SCLK 1
CS 2
H0 3
L0 4
( ) ARE FOR MAX5409/MAX5411 ONLY
DIN DOUT VDD VLOGIC
16 15 14 13
12 GND
MAX5408-
MAX5411
11 AGND
10 H1
9 L1
5678
W0A N.C. (W0B) N.C. (W1B) W1A
THIN QFN
(4mm x 4mm)
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
1 page  
Dual, Audio, Log Taper Digital Potentiometers
Typical Operating Characteristics (continued)
(VDD = +3V (MAX5408/MAX5409), VDD = +5V (MAX5410/MAX5411), DOUT = floating)
LOGIC CURRENT
vs. LOGIC VOLTAGE
50
45 ACTIVE MODE
40 SCLK = 2MHz, O to VLOGIC
35
30
25
20
15
10
5
0
2.5
3.0 3.5 4.0 4.5 5.0
LOGIC SUPPLY VOLTAGE (V)
5.5
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
0.55
0.50 ZERO-CROSSING DETECTION DISABLED
0.45
0.40
0.35
0.30 ACTIVE
0.25
0.20
0.15 STANDBY
0.10
0.05
0
2.5 3.0 3.5 4.0 4.5 5.0 5.5
VDD (V)
Pin Description
PIN
MAX5408/
MAX5408/
MAX5409/
MAX5409/
MAX5410 (QFN) MAX5410 (QSOP) MAX5411 (QFN) MAX5411 (QSOP)
1 3 13
2 4 24
3 5 35
4 6 46
5 7 57
—— 6 8
—— 7 9
8 10 8 10
9 11 9 11
10 12 10 12
11 13 11 13
12 14 12 14
13 15 13 15
14 16 14 16
15 1 15 1
16 2 16 2
6, 7 8, 9 — —
NAME
SCLK
CS
H0
L0
W0A
W0B
W1B
W1A
L1
H1
AGND
GND
VLOGIC
VDD
DOUT
DIN
N.C.
FUNCTION
Serial Clock Input
Chip-Select Input
High Terminal of Resistor 0
Low Terminal of Resistor 0
Wiper Terminal A of Resistor 0
Wiper Terminal B of Resistor 0
Wiper Terminal B of Resistor 1
Wiper Terminal A of Resistor 1
Low Terminal of Resistor 1
High Terminal of Resistor 1
Analog Ground
Ground
Digital Logic Power Supply
Analog Power Supply
Serial Data Output
Serial Data Input
No Connection. Not internally connected.
_______________________________________________________________________________________ 5
5 Page 
Dual, Audio, Log Taper Digital Potentiometers
Functional Diagram
W0A H0 N.C. (W0B) DOUT
W1A H1 N.C. (W1B)
MAX5408–
MAX5411
VLOGIC VDD
L0
( ) ARE FOR MAX5409/MAX5411 ONLY
32 POSITION
DECODER/
REGISTER
AUDIO ZERO-
CROSSING
DETECTOR
SPI LOGIC
SCLK DIN
CS
L1 GND AGND
______________________________________________________________________________________ 11
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet MAX5408ETE.PDF ] | |
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