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PDF MAX4737 Data sheet ( Hoja de datos )
| Número de pieza | MAX4737 | |
| Descripción | Quad SPST Analog Switches | |
| Fabricantes | Maxim Integrated | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de MAX4737 (archivo pdf) en la parte inferior de esta página. Total 16 Páginas | ||
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MAX4737/MAX4738/
MAX4739
4.5Ω Quad SPST Analog Switches in UCSP
General Description
The MAX4737/MAX4738/MAX4739 low-voltage, low on-
resistance (RON), quad single-pole/single throw (SPST)
analog switches operate from a single +1.8V to +5.5V
supply. These devices are designed for USB 1.1 and
audio switching applications.
The MAX4737/MAX4738/MAX4739 feature 4.5Ω RON
(max) with 1.2Ω flatness and 0.4Ω matching between
channels. These new switches feature guaranteed
operation from +1.8V to +5.5V and are fully specified
at 3V and 5V. These switches offer break-before-make
switching (1ns) with tON <80ns and tOFF <40ns at +2.7V.
The digital logic inputs are +1.8V logic compatible with a
+2.7V to +3.6V supply.
These switches are packaged in a chip-scale package
(UCSP™), significantly reducing the required PC board
area. The chip occupies only a 2mm x 2mm area and has
a 4 x 4 bump array with a bump pitch of 0.5mm. These
switches are also available in a 14-pin TSSOP and a
16-pin thin QFN (4mm x 4mm) package.
Applications
●● Battery-Operated Equipment
●● Audio/Video-Signal Routing
●● Low-Voltage Data-Acquisition Systems
●● Sample-and-Hold Circuits
●● Data-Acquisition Systems
●● Communications Circuits
UCSP is a trademark of Maxim Integrated Products, Inc.
Benefits and Features
●● USB 1.1 Signal Switching
●● 2ns (max) Differential Skew
●● -3dB Bandwidth: >300MHz
●● Low 20pF On-Channel Capacitance
●● Low RON
• 4.5Ω (max) (+3V Supply)
• 3Ω (max) (+5V Supply)
●● 0.4Ω (max) RON Match (+3V Supply)
●● 1.2Ω (max) RON Flatness (+3V Supply)
●● <0.5nA Leakage Current at +25°C
●● High Off-Isolation: -55dB (10MHz)
●● Low Crosstalk: -80dB (10MHz)
●● Low Distortion: 0.03%
●● +1.8V CMOS-Logic Compatible
●● Single-Supply Operation from +1.8V to +5.5V
●● Rail-to-Rail Signal Handling
19-2633; Rev 2; 1/16
1 page  
MAX4737/MAX4738/
MAX4739
4.5Ω Quad SPST Analog Switches in UCSP
Electrical Characteristics—Single +5V Supply (continued)
(V+ = +4.2V to +5.5V, VIH = +2.0V, VIL = +0.8V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at V+ = +5.0V,
TA = +25°C, unless otherwise noted.) (Notes 3, 4)
PARAMETER
Break-Before-Make Time Delay
(MAX4739 Only) (Note 8)
SYMBOL
CONDITIONS
tBBM
VNO_, VNC_ = 3.0V;
RL = 300Ω, CL = 35pF, Figure 2
TA
+25°C
TMIN to
TMAX
MIN
1
TYP MAX UNITS
8
ns
Skew (Note 8)
DIGITAL I/O
tSKEW RS = 39Ω, CL = 50pF, Figure 3
TMIN to
TMAX
0.15
2
ns
Input Logic High Voltage
Input Logic Low Voltage
VIH
VIL
TMIN to
TMAX
TMIN to
TMAX
2.0
V
0.8 V
Input Leakage Current
POWER SUPPLY
IIN V+ = 5.5V, VIN_ = 0V or V+
TMIN to
TMAX
-0.1
+0.1
µA
Power-Supply Range
Positive Supply Current
V+
I+ V+ = 5.5V, VIN_ = 0V or V+
TMIN to
TMAX
TMIN to
TMAX
1.8
5.5 V
1 µA
Note 3: UCSP parts are 100% tested at +25°C only, and guaranteed by design over the specified temperature range. TSSOP and
thin QFN parts are 100% tested at TMAX and guaranteed by design over the specified temperature range.
Note 4: The algebraic convention used in this data sheet is where the most negative value is a minimum and the most positive
value is a maximum.
Note 5: Guaranteed by design for UCSP and thin QFN parts.
Note 6: ΔRON = RON(MAX) - RON(MIN).
Note 7: Flatness is defined as the difference between the maximum and minimum value of on-resistance as measured over the
specified analog signal ranges.
Note 8: Guaranteed by design.
Note 9: Off-Isolation = 20log10 (VCOM / VNO), VCOM = output, VNO = input to off switch.
Note 10: Between any two switches.
www.maximintegrated.com
Maxim Integrated │ 5
5 Page 
MAX4737/MAX4738/
MAX4739
4.5Ω Quad SPST Analog Switches in UCSP
Detailed Description
The MAX4737/MAX4738/MAX4739 quad SPST analog
switches operate from a single +1.8V to +5.5V supply.
The MAX4737/MAX4738/MAX4739 offer excellent AC
characteristics, <0.5nA leakage current, less than 1ns
differential skew, and 15pF on-channel capacitance. All
of these devices are CMOS-logic compatible with V+ to
GND signal handling capability.
The MAX4737/MAX4738/MAX4739 are USB-complaint
switches that provide 4.5Ω (max) on-resistance and
15pF on-channel capacitance to maintain signal integrity.
At 12Mbps (USB full-speed data rate specification), the
MAX4737/MAX4738/MAX4739 introduce less than 2ns
propagation delay between input and output signals and
less than 0.5ns change in skew for the output signals
(see Figure 4).
The MAX4737 has four normally open (NO) switches, the
MAX4738 has four normally closed (NC) switches, and
the MAX4739 has two NO switches and two NC switches.
Applications Information
Digital Control Inputs
The MAX4737/MAX4738/MAX4739 logic inputs accept
up to +5.5V regardless of supply voltage. For example,
with a +3.3V supply, IN_ can be driven low to GND and
high to +5.5V allowing for mixing of logic levels in a sys-
tem. Driving the control logic inputs rail-to-rail minimizes
power consumption. For a +1.8V supply voltage, the
logic thresholds are 0.5V (low) and 1.4V (high); for a +5V
supply voltage, the logic thresholds are 0.8V (low) and
2.0V (high).
Analog Signal Levels
Analog signals that range over the entire supply voltage
(V+ to GND) are passed with very little change in on-
resistance (see Typical Operating Characteristics). The
switches are bidirectional, so the NO_, NC_, and COM_
pins can be either inputs or outputs.
Power-Supply Bypassing
Power-supply bypassing improves noise margin and
prevents switching noise from propagating from the V+
supply to other components. A 0.1μF capacitor connected
from V+ to GND is adequate for most applications.
UCSP Applications Information
For the latest application details on UCSP construc-
tion, dimensions, tape carrier information, PC board
techniques, bump-pad layout, and recommended reflow
temperature profile, as well as the latest information on
reliability testing results, refer to the Application Note:
UCSP—A Wafer-Level Chip-Scale Package on Maxim’s
web site at www.maximintegrated.com/ucsp.
www.maximintegrated.com
Maxim Integrated │ 11
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet MAX4737.PDF ] | |
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