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Part: MAX4570EWI
Category:
Multimedia
-> Audio/Video
Description: MAX4550, MAX4570 Serially Controlled, Dual 4x2, Clickless Audio/video Analog Crosspoint Switches
Company: Maxim Integrated Products
Datasheet: Download MAX4570EWI datasheet File size : 165 kB
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Datasheet text preview:
19-1397; Rev 0; 10/98
KIT ATION EVALU LE B AVAILA
Serially Controlled, Dual 4x2, Clickless Audio/Video Analog Crosspoint Switches
General Description Features
o Selectable Soft Switching Mode for Clickless Audio Operation o 43 Typical On-Resistance (±5V Supplies) o 5 Typical On-Resistance Matching Between Channels o 4 Typical On-Resistance Flatness o 0.014% Total Harmonic Distortion with 1k Load o -110dB Off-Isolation at 20kHz -78dB Off-Isolation at 4MHz o -95dB Crosstalk at 20kHz -54dB Crosstalk at 4MHz o Serial Interface 2-Wire, Fast-Mode, I2C-Compatible (MAX4550) 3-Wire, SPI/QSPI/MICROWIRE-Compatible (MAX4570) o Four Auxiliary Outputs that Extend µP Ports o Single-Supply Operation: +2.7V to +5.5V Dual-Supply Operation: ±2.7V to ±5.5V
MAX4550/MAX4570
The MAX4550/MAX4570 serial-interface, programmable, dual 4x2 audio/video crosspoint switches are ideal for multimedia applications. Each device contains two identical crosspoint switch arrays, each with four inputs and two outputs. To improve off-isolation, use the additional crosspoint inputs SA and SB as shunts. Each output is selectively programmable for clickless or regular m o d e operation. A set of internal resistive voltagedividers supplies DC bias for each output when using AC-coupled inputs. Additionally, four auxiliary outputs control additional circuitry via the MAX4550/MAX4570's 2-wire or 3-wire interface. The MAX4550/MAX4570 feature 80 on-resistance, 10 o n - r e s i s t a n c e matching between channels, 5 o n resistance flatness, and 0.014% total harmonic distortion. Additionally, they feature off-isolation of at least - 1 1 0 d B in the audio frequency range and -78dB at 4 M H z , with -95dB crosstalk in the audio frequency range and -54dB at 4MHz. The MAX4550 uses a 2-wire I 2C - c o m p a t i b l e serial interface, while the MAX4570 uses a 3-wire SPITM/QSPITM or MICROWIRETM-compatible serial interface. These parts are available in 28-pin S S O P and wide SO packages and are tested over e i t h e r the commercial (0°C to +70°C) or extended (-40°C to +85°C) operating temperature range.
Pin Configuration
TOP VIEW
SB 1 NO3A 2 NO3B 3 BIASH 4 28 SA 27 NO2B 26 NO2A 25 V24 V+
Applications
Set-Top Boxes PC Multimedia Boards High-End Audio Systems Video Conferencing Systems
Ordering Information
PART MAX4550CAI MAX4550CWI MAX4550EAI MAX4550EWI MAX4570CAI MAX4570CWI MAX4570EAI MAX4570EWI TEMP. RANGE 0°C to +70°C 0°C to +70°C -40°C to +85°C -40°C to +85°C 0°C to +70°C 0°C to +70°C -40°C to +85°C -40°C to +85°C PIN-PACKAGE 28 SSOP 28 Wide SO 28 SSOP 28 Wide SO 28 SSOP 28 Wide SO 28 SSOP 28 Wide SO
BIASL 5 NO4A 6 NO4B 7 V+ 8 COM2A 9 Q0 10 COM2B 11 Q1 12 A0 (CS) 13 SCL (SCLK) 14
MAX4550 MAX4570
23 NO1B 22 NO1A 21 GND 20 COM1A 19 Q3 18 COM1B 17 Q2 16 A1 (DOUT) 15 SDA (DIN)
I2C is a trademark of Philips Corp. SPI/QSPI are trademarks of Motorola, Inc. MICROWIRE is a trademark of National Semiconductor Corp.
SO/SSOP
( ) ARE FOR MAX4570.
Functional Diagram appears at end of data sheet.
1
________________________________________________________________ Maxim Integrated Products
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800. For small orders, phone 1-800-835-8769.
Serially Controlled, Dual 4x2, Clickless Audio/Video Analog Crosspoint Switches MAX4550/MAX4570
ABSOLUTE MAXIMUM RATINGS
V+ to GND ...... -0.3V to +6V V+ to V-.......-0.3V to +13.2V V- to GND ........+0.3V to -6V NO_ _ , S_, BIAS_, COM_ _, Q_, A1, DOUT to GND (Note 1).....(V- - 0.3V) to (V+ + 0.3V) CS, SCLK, DIN, SCL, SDA, A0 to GND ...........-0.3V to +6V Continuous Current into Any Terminal......±10mA Peak Current, NO_ _ , S_ , COM_ _ (pulsed at 1ms, 10% duty cycle max) ..±40mA Continuous Power Dissipation (TA = +70°C) 28-Pin SSOP (derate 9.52mW/°C above +70°C) .........762mW 28-Pin Wide SO (derate 12.5mW/°C above +70°C) ...1000mW Operating Temperature Ranges MAX4550C_I/MAX4570C_I .......-0°C to +70°C MAX4550E_I/MAX4570E_I ......-40°C to +85°C Storage Temperature Range .....-65°C to +160°C Lead Temperature (soldering, 10sec) .....+300°C
Note 1: Signals on NO_ _, S_, or COM_ _ exceeding V+ or V- are clamped by internal diodes. Limit forward-diode current to maximum current rating.
Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
ANALOG ELECTRICAL CHARACTERISTICS--Dual Supplies
(V+ = +5V ±5%, V- = -5V ±5%, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 2) PARAMETER ANALOG SWITCHES Analog Signal Range (Note 3) VNO_ _, VCOM_ _, VS_ RON ICOM_ _ = 4mA, VNO_ _ or VS_ = ±3.0V, V+ = 4.75V, V- = -4.75V ICOM_ _ = 4mA, VNO_ _ or VS_ = ±3.0V, V+ = 4.75V, V- = -4.75V TA = +25°C TA = TMIN to TMAX TA = +25°C TA = TMIN to TMAX 4 5 V43 V+ 80 100 10 10 5 8 -1 -10 -5 -10 -5 -20 0.01 0.01 0.01 1 nA TA = TMIN to TMAX TA = +25°C TA = TMIN to TMAX TA = +25°C TA = TMIN to TMAX 10 5 nA 10 5 nA 20 V SYMBOL CONDITIONS MIN TYP MAX UNITS
On-Resistance COM_ _ to NO_ _ or S_ On-Resistance Match Between Channels (Note 4) COM_ _ to NO_ _ or S_ On-Resistance Flatness (Note 5) NO_ _ or S_ Off-Leakage Current (Note 6) COM_ _ Off-Leakage Current (Note 6) COM_ _ On-Leakage Current (Note 6) AUDIO PERFORMANCE Total Harmonic Distortion plus Noise Off-Isolation (Note 7) Channel-to-Channel Crosstalk Channel-to-Channel Crosstalk
RON
ICOM_ _ = 4mA; TA = +25°C RFLAT(ON) VNO_ _ or VS_ = ±3.0V, 0; TA = TMIN to TMAX V+ = 4.75V; V- = -4.75V NO_(OFF) VNO_ _ or VS_ = ±4.5V, VCOM_ = +4.5V, V+ = 5.25V, V- = -5.25V VNO_ _ or VS_ = ±4.5V, VCOM_ = +4.5V, V+ = 5.25V, V- = -5.25V VNO_ _ or VS_ = floating, VCOM_ = ±4.5V, V+ = 5.25V, V- = -5.25V TA = +25°C
ICOM_(OFF)
ICOM_(ON)
THD+N VISO(A) VCTA(A) VCTA(A)
fIN = 1kHz, RL = 1k, VNO_ or VS_ = 1VRMS, VNO_ or VS_ = 0 VNO = 1VRMS, fIN = 20kHz, RL = 10k, S = GND Shunt switch on Shunt switch off
0.014 -110 -80 -95
% dB dB
ICOM_ or= S_ = 1VRMS, fIN = 20kHz, VNO_ _ _ V 1mA RL = 10k, three channels driven at 20kHz
2
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Serially Controlled, Dual 4x2, Clickless Audio/Video Analog Crosspoint Switches
ANALOG ELECTRICAL CHARACTERISTICS--Dual Supplies (continued)
(V+ = +5V ±5%, V- = -5V ±5%, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 2) PARAMETER VIDEO PERFORMANCE Off-Isolation VISO(V) VCT(V) BW COFF(NO) tONSD tOFFSD tBBM tONSE tOFFSE RBIAS V+ VI+ IReset condition, V+ = 2.7V to 5.25V Reset condition, V- = -5.25V to 0 VNO_ _ or VS_ = 1VRMS, fIN = 4MHz, RL = 1k, S_ = GND Shunt switch on Shunt switch off -78 dB -63 -54 14 11 400 200 10 100 36 11 13 2.7 -5.25 7 20 27 5.25 0 20 -20 900 500 dB MHz pF ns ns ns ms ms k SYMBOL CONDITIONS MIN TYP MAX UNITS
MAX4550/MAX4570
Channel-to-Channel Crosstalk 0.1dB Bandwidth Off-Capacitance Turn-On Time (Note 9) Turn-Off Time (Note 9) Break-Before-Make Time Turn-On Time Turn-Off Time BIAS NETWORKS Bias Network Resistance POWER SUPPLIES Supply Voltage Range V+ Supply Current (Note 10) V- Supply Current
VNO_ _ or VS_ = 1VRMS, fIN = 4MHz, RL = 10, three channels driven at 4MHz RS = 75, RL = 1k fIN = 1MHz, VNO_ _ or VS_ = 1.5V, RL = 5k VNO_ _ or VS_ = 1.5V, RL = 300 VNO_ _ or VS_ = 1.5V VNO_ _ or VS_ = 1.5V, RL = 5k VNO_ _ or VS_ = 1.5V, RL = 300 BIASH to BIASL
DYNAMIC TIMING WITH CLICKLESS MODE DISABLED (Note 8)
DYNAMIC TIMING WITH CLICKLESS MODE ENABLED (Note 8, Figure 5)
V µA µA
ANALOG ELECTRICAL CHARACTERISTICS--Single +5V Supply
(V+ = +5V ±5%, V- = 0, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 2) PARAMETER ANALOG SWITCHES Analog Signal Range (Note 3) VNO_ _, VCOM_ _, VS_ RON ICOM_ _ = 4mA, VNO_ _ or VS_ = 3.0V, V+ = 4.75V ICOM_ _ = 4mA, VNO_ _ or VS_ = 3.0V, V+ = 4.75V ICOM_ _ = 4mA; VNO_ _ or VS_ = 1V, 2V, 3V; V+ = 4.75V TA = +25°C TA = TMIN to TMAX TA = +25°C TA = TMIN to TMAX TA = +25°C TA = TMIN to TMAX TA = +25°C TA = TMIN to TMAX -1 -10 0.01 4 5 0 60 V+ 100 130 10 10 10 15 1 nA 10 3 V SYMBOL CONDITIONS MIN TYP MAX UNITS
On-Resistance
On-Resistance Match Between Channels (Note 4) On-Resistance Flatness (Note 5) NO_ _ or S_ Off-Leakage Current (Notes 6, 11)
RON
RFLAT
VNO or VS_ = 4.5V, 1V; INO_ _(OFF) VCOM_ _ = 1V, 4.5V; V+ = 5.25V
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