MAX4740 Datasheet, PDF (1/13 Pages) Maxim Integrated Products – Quad SPDT Audio Switches

19-0558; Rev 1; 11/07
Quad SPDT Audio Switches
General Description
The MAX4740/MAX4740H low on-resistance (0.61Ω
typ) analog switches operate from a single 1.6V to 5.5V
supply. The MAX4740/MAX4740H are quad, single-
pole, double-throw (SPDT) switches and are configured
to route audio signals. The MAX4740/MAX4740H are
pin-to-pin compatible parts with the ST Microelectronics
quad SPDT STG3699 analog switch.
The MAX4740 is a quad SPDT switch and the
MAX4740H is a quad SPDT switch that can be placed
in a high-impedance mode. Switching logic is con-
trolled by 2 control bits (CB1 and CB2). The MAX4740/
MAX4740H also feature a low on-resistance match
(0.06Ω) and low power-supply current (0.3µA), which
increases battery life.
The MAX4740/MAX4740H are available in a tiny 3mm x
3mm, 16-pin TQFN-EP, and 2.5mm x 2.5mm, 16-pin ultra-
thin QFN packages.
Applications
Voice Switching
Cellular Phones
PDAs and other Handheld Devices
MP3 Player
Notebook Computers
Typical Operating Circuit
BASEBAND
(SPEECH)
MIDI
(RINGER)
1.6V to 5.5V
VCC
NO1
NC1
COM1
INTERNAL
NO2
SPEAKER
COM2
NC2
CB1
CONTROL
LOGIC
CB2
NO3
COM3
NC3
EXTERNAL
BLOCKING CAPS _HEADPHONES
NO4
COM4
NC4
EXTERNAL
HEADPHONES
GND
MAX4740
Features
♦ Low On-Resistance (0.61Ω typ)
♦ 0.06Ω (typ) Channel-to-Channel Matching
♦ 0.32Ω (typ) On-Resistance Flatness
♦ 1.6V to 5.5V Single-Supply Voltage
♦ High PSRR Reduces Supply Noise (-60dB typ)
♦ 0.08% Total Harmonic Distortion
♦ -68dB typ Crosstalk (100kHz)
♦ -64dB typ Off-Isolation (100kHz)
♦ Low Supply Current (0.3µA typ)
♦ Low Leakage Current (0.1µA typ)
♦ Pin-to-Pin Compatible with ST Micro STG3699
♦ (3mm x 3mm) 16-Pin TQFN, and (2.5mm x 2.5mm)
16-Pin Ultra-Thin QFN Packages
Ordering Information
PART
MAX4740ETE+
MAX4740EVE+
MAX4740HETE+
MAX4740HEVE+
PIN-PACKAGE
16 TQFN-EP
(3mm x 3mm)
16 Ultra-Thin QFN
(2.5mm x 2.5mm)
16 TQFN-EP
(3mm x 3mm)
16 Ultra-Thin QFN
(2.5mm x 2.5mm)
TOP
MARK
AEV
+AAA
AEW
+AAB
PKG
CODE
T1633-4
V162A2-1
T1633-4
V162A2-1
Note: All devices are guaranteed over the -40°C to +85°C
temperature range.
EP = Exposed pad.
Pin Configuration
TOP VIEW
12 11 10 9
NC4 13
V_{CC 14}
NO1 15
COM1 16
MAX4740
MAX4740H
*EP
+
1 23 4
8 COM3
7 NO3
6 GND
5
3mm x 3mm Thin QFN/
2.5mm x 2.5mm Ultra-Thin QFN
*CONNECT EP TO GND OR LEAVE EP UNCONNECTED.
________________________________________________________________ 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.