LT1204CN Linear Technology, LT1204CN Datasheet

IC VIDEO MUX CFA 75MHZ 4IN 16DIP

LT1204CN

Manufacturer Part Number
LT1204CN
Description
IC VIDEO MUX CFA 75MHZ 4IN 16DIP
Manufacturer
Linear Technology
Datasheet

Specifications of LT1204CN

Applications
4:1 Multiplexer-Amplifier
Number Of Circuits
1
-3db Bandwidth
75MHz
Slew Rate
1000 V/µs
Current - Supply
19mA
Current - Output / Channel
125mA
Voltage - Supply, Single/dual (±)
10 V ~ 30 V, ±5 V ~ 15 V
Mounting Type
Through Hole
Package / Case
16-DIP (0.300", 7.62mm)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LT1204CN
Manufacturer:
LT
Quantity:
47
Part Number:
LT1204CN#PBF
Manufacturer:
LINEAR/凌特
Quantity:
20 000
TYPICAL
FEATURE
A
V
V
V
V
IN0
IN1
IN2
IN3
PPLICATI
0.1dB Gain Flatness > 30MHz
Channel Separation at 10MHz: 90dB
40mV Switching Transient, Input Referred
– 3dB Bandwidth, A
Channel-to-Channel Switching Time: 120ns
Easy to Expand for More Inputs
Large Input Range: 6V
0.04% Differential Gain, R
0.06 Differential Phase, R
High Slew Rate: 1000V/ s
Output Swing, R
Wide Supply Range: 5V to 15V
Broadcast Quality Video Multiplexing
Large Matrix Routing
Medical Imaging
Large Amplitude Signal Multiplexing
Programmable Gain Amplifiers
6.8k
75
75
75
75
1
2
3
4
5
6
7
8
8.2k
GND
GND
GND
REF
V
V
V
V
A
IN0
IN1
IN2
IN3
S
PPLICATI
–15V
O
+1
+1
+1
+1
L
U
= 400 : 13V
V
S
= 2, R
LT1204
L
L
L
= 150
O
= 150
= 150 : 75MHz
LOGIC
U
+
CFA
ENABLE
S/D
V
V
A1
A0
V
FB
O
+
16
15
14
13
12
11
10
9
1204 TA01
15V
–15V
R
1k
F
75
R
1k
D
The LT
drive 75
systems. Wide bandwidth, high slew rate, and low differ-
ential gain and phase make the LT1204 ideal for broadcast
quality signal routing. Channel separation and disable
isolation are greater than 90dB up to 10MHz. The channel-
to-channel output switching transient is only 40mV
with a 50ns duration, making the transition imperceptible
on high quality monitors.
A unique feature of the LT1204 is its ability to expand into
larger routing matrices. This is accomplished by a patent
pending circuit that bootstraps the feedback resistors in
the disable condition, raising the true output impedance of
the circuit. The effect of this feature is to eliminate cable
misterminations in large systems.
The large input and output signal levels supported by the
LT1204 when operated on 15V supplies make it ideal for
general purpose analog signal selection and multiplexing.
A shutdown feature reduces the supply current to 1.5mA.
G
, LTC and LT are registered trademarks of Linear Technology Corporation.
ESCRIPTIO
V
OUT
4-Input Video Multiplexer
®
1204 is a 4-input video multiplexer designed to
cables and easily expand into larger routing
Feedback Amplifier
with 75MHz Current
–100
–120
–20
–40
–60
–80
U
1
V
V
V
R
S
IN 0
IN 1,2,3
L
= 15V
= 100
Surface Mount PCB Measurements
= GND
All Hostile Crosstalk
= 0dBm
FREQUENCY (MHz)
10
LT1204
1204 TA02
100
1
P-P
,

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LT1204CN Summary of contents

Page 1

... The large input and output signal levels supported by the LT1204 when operated on 15V supplies make it ideal for general purpose analog signal selection and multiplexing. A shutdown feature reduces the supply current to 1.5mA. , LTC and LT are registered trademarks of Linear Technology Corporation 15V V ...

Page 2

... Operating Temperature Range ............... – Storage Temperature Range ................ – 150 C Junction Temperature (Note 4) ............................ 150 C Lead Temperature (Soldering, 10 sec).................. 300 ORDER PART NUMBER V 1 IN0 GND 2 LT1204CN IN1 GND IN2 GND IN3 REF 8 *See Note 3 T JMAX = 0V, Pin 8 grounded and pulse tested unless otherwise noted. ...

Page 3

ELECTRICAL C HARA TERISTICS 15V SYMBOL PARAMETER Input Voltage Range, Any Positive Input CMRR Common Mode Rejection Ratio Negative Input Current Common Mode Rejection PSRR Power Supply Rejection ...

Page 4

... Note 3: Commercial grade parts are designed to operate over the temperature range of – but are neither tested nor guaranteed beyond Industrial grade parts specified and tested over – are available on special request. Consult factory. Note calculated from the ambient temperature T J dissipation P according to the following formulas: D LT1204CN )(70 C/ LT1204CS )(90 C/W) ...

Page 5

W U TYPICAL AC PERFOR ( 150 150 150 150 150 150 1k ...

Page 6

LT1204 W U TYPICAL PERFOR A 12V Frequency Response PHASE GAIN –1 –2 –3 –4 –5 – 10M 100M FREQUENCY (Hz) 12V Frequency Response PHASE GAIN ...

Page 7

W U TYPICAL PERFOR A Maximum Undistorted Output vs Frequency 15V ...

Page 8

LT1204 W U TYPICAL PERFORMANCE CHARACTERISTICS Output Disable V-I Characteristic V = 15V S 200 150 100 50 0 –50 SLOPE = 1/18k –100 –150 –200 –5 –4 –3 –2 – ...

Page 9

W U TYPICAL PERFOR A Settling Time to 1mV vs Output Step 15V –2 –4 –6 –8 – ...

Page 10

LT1204 PPLICATI S I FOR ATIO Capacitance on the Inverting Input Current feedback amplifiers require resistive feedback from the output to the inverting input for stable operation. Take care to minimize the stray capacitance between the ...

Page 11

PPLICATI S I FOR ATIO monitors. The reference pin has no effect when the LT1204 is operating on 5V, and should be grounded. On supply voltages above 8V, the range of voltages for Pin 8 should ...

Page 12

LT1204 PPLICATI S I FOR ATIO When the decoder turns off the tee switch (Q2 on) the emitter base junctions of Q1 and Q3 become reverse- biased while Q2 emitter absorbs current from I do the ...

Page 13

PPLICATI S I FOR ATIO A GND VIN0 VIN1 VIN2 VIN3 W U SOL PC Board #028, Component Side V– (408) 432-1900 LT1204 VIDEO MUX DEMONSTRATION BOARD LT1204 V+ VOUT ...

Page 14

LT1204 PPLICATI S I FOR ATIO IN0 IN0 2 GND IN1 IN1 4 GND IN2 IN2 6 GND IN3 IN3 8 REF All Hostile ...

Page 15

PPLICATI S I FOR ATIO A Multiplexer Expansion Pin 11 and Pin 12 To expand the number of MUX inputs, LT1204s can be paralleled by shorting their outputs together. The multi- plexer disable logic has been designed ...

Page 16

LT1204 PPLICATI S I FOR ATIO A improper cable termination due to feedback resistors loading the cable. The limit to the number of expanded inputs is set by the acceptable error budget of the system. 16-to-1 MUX ...

Page 17

TYPICAL PPLICATI Programable Gain Amplifier (PGA) Two LT1204s and seven resistors make a Programable Gain Amplifier with a 128-to-1 gain range. The gain is N proportional to 2 where N is the 3-bit binary value of the ...

Page 18

LT1204 O U TYPICAL A PPLICATI Differential Receiver Switching Waveforms CABLE OUTPUT LT1204 #2 OUTPUT A0 PIN 9 4-Input Twisted-Pair Driver It is possible to send and receive color composite video signals appreciable distances on a low cost twisted pair. ...

Page 19

... DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen- tation that the interconnection of its circuits as described herein will not infringe on existing patent rights. ...

Page 20

... LT1227 + 18 390 680pF 300pF + 91 75 LT1193 – + – 300 1204 TA07 300 200 COMMENTS High Speed, but No Cable Driving Low Cost, with Shutdown Very High Speed, Pixel Switching 1204fas, sn1204 LT/TP 0898 2K REV A • PRINTED IN USA LINEAR TECHNOLOGY CORPORATION 1993 ...

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