MAX4991 Datasheet, PDF (1/10 Pages) Maxim Integrated Products – Low RON, Dual-SPDT/Single-DPDT Analog Switches with Slow Turn-On Time

19-4150; Rev 1; 6/09
Low R_ON, Dual-SPDT/Single-DPDT Analog
Switches with Slow Turn-On Time
General Description
The MAX4991–MAX4994 low on-resistance analog
switches operate from a single +1.8V to +5.5V supply.
The MAX4991/MAX4993 feature a slow turn-on time to
reduce clicks and pops due to coupling capacitors and
audio amplifiers with a DC output bias. This feature pro-
vides click-and-pop reduction without adding additional
parts for existing architectures.
The MAX4991/MAX4992 are dual single-pole/double-
throw (SPDT) switches, while the MAX4993/MAX4994
are double-pole/double-throw (DPDT) switches. The
MAX4993/MAX4994 feature an active-low enable input
(EN) that sets all the channels to high impedance and
reduces supply current when driven high. These
devices have 0.3Ω on-resistance and 0.004% THD+N
to route high fidelity audio signals.
The MAX4991–MAX4994 are available in space-saving
10-pin UTQFN (1.4mm x 1.8mm) package, and are
specified for operation over the -40°C to +85°C extend-
ed temperature range.
Applications
Speaker Headset Source Switching
Cellular Phones
Portable MP3 Players
Audio Signal Routing
Typical Application Circuit appears at end of data sheet.
Features
♦ Slow Turn-On for Click-and-Pop Reduction Without
Additional Parts
♦ Low 0.3Ω On-Resistance
♦ Low R_ON Flatness (1mΩ)
♦ Low THD+N: 0.004%
♦ +1.8V to +5.5V Single-Supply Operation
♦ 1.2µA (typ) Supply Current
♦ Space-Saving Packages
10-Pin UTQFN (1.4mm x 1.8mm x 0.55mm)
Pin Configurations
TOP VIEW
CB2 8
COM2 9
NO2 10
76
MAX4991/
MAX4992
12
5 NC1
4 CB1
3 COM1
UTQFN
EN 8
COM2 9
NO2 10
76
MAX4993/
MAX4994
12
5 NC1
4 CB
3 COM1
UTQFN
Ordering Information/Selector Guide
PART
PIN-PACKAGE CONFIGURATION
SLOW-SWITCHING
TIME
MAX4991EVB+*
10 UTQFN
Dual SPDT
Yes
MAX4992EVB+
10 UTQFN
Dual SPDT
No
MAX4993EVB+
10 UTQFN
DPDT
Yes
MAX4994EVB+*
10 UTQFN
DPDT
No
Note: All devices operate over -40°C to +85°C extended temperature range.
+Denotes a lead(Pb)-free/RoHS-compliant package.
*Future product—contact factory for availability.
ENABLE LINE
No
No
Yes
Yes
TOP
MARK
AAD
AAE
AAF
AAG
________________________________________________________________ Maxim Integrated Products 1
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or visit Maxim’s website at www.maxim-ic.com.