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 Ordering number : ENA1273
Monolithic Linear IC
LA8123TT
Overview
For Digital CATV/Cable Modem Receiver
AGC Amplifier
LA8123TT is an AGC amplifier. It is ideally suited for use with Digital TV, Digital CATV, Cable modem receiver and IP Telephony receiver.
Functions
* IF AGC control * IF AGC amplifier * Driver amplifier
Specifications
Maximum Ratings at Ta = 25C
Parameter Maximum supply voltage Input voltages Circuit Current Symbol VCC max Vin I6 I7 Allowable Power Dissipation Operating Temperature Range Storage Temperature Range Pd max Topr Tstg 1.6mm, glass epoxy board. Pin 1 Pin 2, 3, 4 Pin 6 sink current Pin 7 sink current Ta 85C * Conditions Ratings 7.0 -0.3 to VCC op+0.3 2 2 310 -20 to 85 -55 to 150 Unit V V mA mA mW C C
* : Specified board : 45.0mm x 43.0mm
Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to "standard application", intended for the use as general electronics equipment (home appliances, AV equipment, communication device, office equipment, industrial equipment etc.). The products mentioned herein shall not be intended for use for any "special application" (medical equipment whose purpose is to sustain life, aerospace instrument, nuclear control device, burning appliances, transportation machine, traffic signal system, safety equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives in case of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any guarantee thereof. If you should intend to use our products for applications outside the standard applications of our customer who is considering such use and/or outside the scope of our intended standard applications, please consult with us prior to the intended use. If there is no consultation or inquiry before the intended use, our customer shall be solely responsible for the use. Specifications of any and all SANYO Semiconductor Co.,Ltd. products described or contained herein stipulate the performance, characteristics, and functions of the described products in the independent state, and are not guarantees of the performance, characteristics, and functions of the described products as mounted in the customer's products or equipment. To verify symptoms and states that cannot be evaluated in an independent device, the customer should always evaluate and test devices mounted in the customer's products or equipment.
90308 MS PC 20060421-S00003 No.A1273-1/7
LA8123TT
Recommended Operating Conditions at Ta = 25C
Parameter Recommended supply voltage Operating supply voltage range AGC control voltage range Symbol VCC VCC op Vagc Pin 1 Pin 1 Pin 4 Conditions Ratings 5.0 4.5 to 5.5 0 to 3.3 Unit V V V
Electrical Characteristics at Ta = 25C, VCC = 5.0V
Parameter Circuit current Input frequency range Noise figure Inter modulation Symbol Itotal fin NF IM3 Pin No. 1 2, 3 6, 7 6, 7 No signal fc : -3dB V4 = 3.0V, f = 45MHz V4 = 3.0V, f1 = 44MHz, f2 = 45MHz, Output level = 104dBV/tone Total amplifier gain AGC range G (AGC1) GR (1) GR (2) Maximum Output Level Output offset VO dVO 6/2, 3 7/2, 3 6/2, 3 7/2, 3 6/2, 3 7/2, 3 6, 7 6, 7 Output level = 110dBV V4 = 0.3V to 3.0V, f = 45MHz Input level = 50dBV V4 = 0.3V to 3.0V, f = 45MHz f = 45MHz V4 = 3.0V, f = 45MHz Output level = 110dBV (Pin 7 output) - (Pin 6 output) Maximum gain AGC control voltage Minimum gain AGC control voltage Input impedance Zin 2, 3 V4 = 0V, f = 45MHz 3 1//4.7 k//pF V4L 4 Minimum gain 1 0 0.3 V V4H 4 Maximum gain 1 3.0 3.3 V 1 1 1.8 -0.5 0 0.5 Vp-p dB 1 45 dB 1 40 dB V4 = 3.0V, f = 45MHz 1 57 60 63 dB Conditions Test circuit 1 1 2 1 50 min 33 30 5 Ratings typ 38 max 43 70 mA MHz dB dBc Unit
Package Dimensions
unit : mm (typ) 3245B
3.0 8
3.0
4.9
1 (0.53)
2 0.65 0.25
(0.85) 1.1MAX
0.125
SANYO : MSOP8(150mil)
0.08
0.5
No.A1273-2/7
LA8123TT
Block Diagram
VCC 1 IF input 1 2 8 GND
7 Driver output 1
IF input 2 3 AGC AGC control 4
6 Driver output 1
5 GND
Test Circuit 1
1 VCC
TOKO 617DB-1674 1000pF
8
1000pF 200
2
1000pF
7
1000pF
Spectrum Analyzer
200 51
Vin
Zo=50
3
1000pF
6 AGC
4 AGC Voltage
1000pF
5
Output Voltage is divided by 50 / (200+50)
Test Circuit 2
Noise FigureAnalyzer
1 VCC
TOKO 617DB-1674 1000pF 1000pF
8
1000pF 200
2
7
1000pF 200 51
3
1000pF
6 AGC
4 AGC Voltage
1000pF
5
Test Circuit 3
1 VCC Network Analyzer
1000pF 51 1000pF 200 51 1000pF 1000pF 200 51
8
2
7
3
1000pF
6 AGC
4 AGC Voltage
1000pF
5
No.A1273-3/7
LA8123TT
Pin Function
Pin No. 1 2 3 VCC IF input. Function Equivalent circuit
1
2 3 1.2k Bias 8
4 AGC control.
1.2k
1
4
10k
8
5 6 7 Gain control Switch. Driver output.
1
6 7
20
20
4mA
4mA
8
8 GND
No.A1273-4/7
LA8123TT
70 60 50
Gain -- Vagc
VCC = 4.5V f = 44MHz Circuit 1
Voltage gain - dB
70 60 50 40 30 20 10 0 - 10 - 20
Gain -- Vagc
VCC = 5.0V f = 44MHz Circuit 1
25 C
0 0.5
Voltage gain - dB
40 30 20 10 0 - 10 - 20 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5
Ta = 85 Ta C = -2 0 C
Ta =
1.0
1.5
2.0
2.5
3.0
3.5
Vagc - V
70 60 50
Vagc - V
Gain -- Vagc
VCC = 5.5V f = 44MHz Circuit 1
85 C Ta =
0 0.5
Voltage gain - dB
40 30 20 10 0 - 10 - 20
Ta =
1.0
-2
1.5
0 C
2.0
2.5
3.0
3.5
Vagc - V
35
Noise Figure -- Gain
VCC = 4.5V f = 44MHz Circuit 2
Noise Figure - dB
35
Noise Figure -- Gain
VCC = 5.0V f = 44MHz Circuit 2
30
30
Noise Figure - dB
25
25
20
20
15
10
Ta =8 5C Ta =20 C
15
Ta =
10
25
C
5 0 10
5 0 10
15
20
25
30
35
40
45
50
55
60
65
15
20
25
30
35
40
45
50
55
60
65
Voltage gain - dB
35
Voltage gain - dB VCC = 5.5V f = 44MHz Circuit 2
Noise Figure -- Gain
30
Noise Figure - dB
25
20
15
10
Ta =8 5 Ta =- C 20 C
5 0 10
15
20
25
30
35
40
45
50
55
60
65
Voltage gain - dB
No.A1273-5/7
LA8123TT
80 70 60
Gain -- f
VCC = 4.5V Vagc = 3.0V Circuit 1
Voltage gain - dB
80 70 60 50 40 30 20 10
Gain -- f
VCC = 5.0V Vagc = 3.0V Circuit 1
Ta =
Voltage gain - dB
50 40 30 20 10 0 10
Ta =Ta 20C =8 5 C
25 C
2
3
5
7
100
2
3
5
7 1000
0 10
2
3
5
7
100
2
3
5
7 1000
Frequency, f - MHz
80 70 60
Frequency, f - MHz
Gain -- f
VCC = 5.5V Vagc = 3.0V Circuit 1
Ta =Ta 20C =8 5C
Voltage gain - dB
50 40 30 20 10 0 10
2
3
5
7
100
2
3
5
7 1000
Frequency, f - MHz
120 110 100 90 80 70 60 50 40 30 40
Intermodulation Characteristic
Single output voltage/Tone - dB
Single output voltage/Tone - dB
VCC = 4.5V f = 44MHz, 45MHz, Circuit 1 Ta = -20C Ta = 85C
120 110 100 90 80 70 60 50 40
Intermodulation Characteristic
VCC = 5.0V f = 44MHz, 45MHz, Circuit 1 Ta = 25C Output
Output
Ta = 85C IM3
50 60
Ta = -20C
70 80 90 100 110
Ta = 25C IM3
50 60 70 80 90 100 110
30 40
Differential input voltage/Tone - dB
120 110 100 90 80 70 60 50
Differential input voltage/Tone - dB
Intermodulation Characteristic
VCC = 5.5V f = 44MHz, 45MHz, Circuit 1 Ta = -20C Ta = 85C Output
Single output voltage/Tone - dB
Ta = 85C
40 30 40
IM3
50 60
Ta = -20C
70 80 90 100 110
Differential input voltage/Tone - dB
No.A1273-6/7
LA8123TT
SANYO Semiconductor Co.,Ltd. assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all SANYO Semiconductor Co.,Ltd. products described or contained herein. SANYO Semiconductor Co.,Ltd. strives to supply high-quality high-reliability products, however, any and all semiconductor products fail or malfunction with some probability. It is possible that these probabilistic failures or malfunction could give rise to accidents or events that could endanger human lives, trouble that could give rise to smoke or fire, or accidents that could cause damage to other property. When designing equipment, adopt safety measures so that these kinds of accidents or events cannot occur. Such measures include but are not limited to protective circuits and error prevention circuits for safe design, redundant design, and structural design. In the event that any or all SANYO Semiconductor Co.,Ltd. products described or contained herein are controlled under any of applicable local export control laws and regulations, such products may require the export license from the authorities concerned in accordance with the above law. No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording, or any information storage or retrieval system, or otherwise, without the prior written consent of SANYO Semiconductor Co.,Ltd. Any and all information described or contained herein are subject to change without notice due to product/technology improvement, etc. When designing equipment, refer to the "Delivery Specification" for the SANYO Semiconductor Co.,Ltd. product that you intend to use. Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for volume production. Upon using the technical information or products described herein, neither warranty nor license shall be granted with regard to intellectual property rights or any other rights of SANYO Semiconductor Co.,Ltd. or any third party. SANYO Semiconductor Co.,Ltd. shall not be liable for any claim or suits with regard to a third party's intellctual property rights which has resulted from the use of the technical information and products mentioned above.
This catalog provides information as of September, 2008. Specifications and information herein are subject to change without notice. PS No.A1273-7/7


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