MAX14504 Datasheet, PDF (1/12 Pages) Maxim Integrated Products – Internal Shunt Switches Reduce Click/Pop

19-4244; Rev 1; 12/08
EVAALVUAAILTAIOBNLEKIT
Dual SPDT Negative Rail Analog Switches
with ±V_CC Capability
General Description
The MAX14504/MAX14505/MAX14505A/MAX14506
dual single-pole/double-throw (SPDT) audio switches
feature negative signal capability that allows signals
from -V_CC to +V_CC to pass without distortion. They fea-
ture high continuous current ratings of 550mA (continu-
ous) and 850mA (pulsed). These analog switches have
low on-resistance, low supply current, and operate from
a single +2.3V to +5.5V supply.
The MAX14505/MAX14505A have internal shunt switches
that discharge the audio amplifier AC-coupling capaci-
tance at the normally open (NO) terminals. This reduces
click-and-pop sounds that occur when switching audio
signals between precharged points. The MAX14504/
MAX14505/MAX14505A/MAX14506 control the switches
with control bit, CB, and feature an enable input, EN, that
place COM in a high-impedance mode.
The MAX14504/MAX14505/MAX14505A/MAX14506 are
fully specified to operate from a single +2.3V to +5.5V
power supply. These devices are available in a 1.56mm
x 2.14mm, 12-bump WLP package, and operate over
the -40°C to +85°C extended temperature range.
Cell Phones
MP3 Players
Portable Audio Equipment
Speaker Switching
Applications
Features
o Distortion-Free Negative Signal Throughput from
-V_CC to +V_CC
o Internal Shunt Switches Reduce Click/Pop
(MAX14505/MAX14505A)
o Low On-Resistance 0.36Ω (typ)
o 1mΩ (typ) On-Resistance Flatness
o COM High Impedance for EN = High
o Low 0.2µA (max) Shutdown Current
(MAX14505A/MAX14506)
o +2.3V to +5.5V Single-Supply Voltage
o Small, 1.56mm x 2.14mm, 12-Bump WLP Package
Pin Configuration
TOP VIEW
(BUMPS ON BOTTOM)
1
+
NO2
A
COM2
B
NC2
C
MAX14504/
MAX14505/
MAX14505A/
MAX14506
2
3
NEG
V_CC
EN
GND
CB
GND
4
NO1
COM1
NC1
Typical Operating Circuit appears at end of data sheet.
WLP
(1.56mm x 2.14mm)
Ordering Information/Selector Guide
PART
PIN-PACKAGE
TOP MARK
COM SIGNAL RANGE FOR
EN = V_CC
MAX14504EWC+
MAX14505EWC+*
MAX14505AEWC+
MAX14506EWC+*
12 WLP
12 WLP
12 WLP
12 WLP
AAH
AAI
AAK
AAJ
±V_CC
±V_CC
0 to +V_CC
0 to +V_CC
Note: All devices are specified over the -40°C to +85°C temperature range.
+Denotes a lead(Pb)-free/RoHS-compliant package.
*Future product—contact factory for availability.
CLICKLESS
NO
YES
YES
NO
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.