Sanyo LA8604M Specifications
Ordering number:ENN3890A
Monolithic Linear IC
LA8604M
Narrowband FM IF Stage
Overview
The LA8604M is a narrowband FM IF stage IC that incorporates all the functional blocks for a complete IF stage, including noise filtering, making it ideal for use in cordless telephones.
The LA8604M comprises a second-stage oscillator, a mixer, an IF amplifier, an FM detector, and noise detector, amplifier and rectifier circuits. A signal level meter output which is linear over a wide dynamic range of up to 70dB is also incorporated.
The LA8604M operates from a 2.4 to 6V supply and is
available in 24-pin MFPs.
Features
•On-chip mixer, IF amplifier and limiter.
•On-chip noise filter buffer.
•70dB (typ) signal level meter linearity.
•Signal level meter output buffer.
•2.4 to 6V supply.
•24-pin MFP.
Package Dimensions
unit:mm
3112A-MFP24S
[LA8604M]
24 |
13 |
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5.4 |
7.6 |
1 |
12.5 |
12 |
1.7max |
0.15 |
0.63 |
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1.5 |
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1.0 |
0.1 |
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0.35 |
(0.75) |
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SANYO : MFP24S
Specifications
Absolute Maximum Ratings at Ta = 25˚C
Parameter |
Symbol |
Conditions |
Ratings |
Unit |
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Maximum supply voltage |
VCC max |
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8 |
V |
Maximum power dissipation |
Pd max |
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300 |
mW |
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Operating temperature |
Topr |
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–20 to +75 |
˚C |
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Storage temperature |
Tstg |
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–40 to +125 |
˚C |
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Operating Conditions at Ta = 25˚C
Parameter |
Symbol |
Conditions |
Ratings |
Unit |
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Recommended supply voltage |
VCC |
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3 |
V |
Operating supply voltage range |
VCC op |
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2.4 to 6.0 |
V |
Any and all SANYO products described or contained herein do not have specifications that can handle applications that require extremely high levels of reliability, such as life-support systems, aircraft’s control systems, or other applications whose failure can be reasonably expected to result in serious physical and/or material damage. Consult with your SANYO representative nearest you before using any SANYO products described or contained herein in such applications.
SANYO 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 products described or contained herein.
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
51001TN (KT)/9181TS No.3890–1/7
LA8604M
Operating Characteristics at Ta = 25˚C, VCC=3V, fC=21.7MHz, fmod=1kHz, |
f=±3kHz |
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Parameter |
Symbol |
Conditions |
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Ratings |
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Unit |
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min |
typ |
max |
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Quiescent current |
ICCO |
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2.8 |
3.8 |
mA |
–3dB limiting sensitivity |
–3dBLS |
VI=80dBµ, –3dB input |
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5 |
11 |
dBµ |
Demodulation output voltage |
VO |
VI=80dBµ |
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115 |
170 |
230 |
mV |
Signal-to-noise ratio |
S/N |
VI=80dBµ, zero modulation |
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54 |
60 |
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dB |
VI=20dBµ, zero modulation |
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20 |
25 |
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dB |
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Amplitude modulation rejection ratio |
AMR |
30% AM modulation |
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30 |
40 |
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dB |
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Total harmonic distortion |
THD |
VI=80dBµ |
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0.7 |
2.0 |
% |
Noise detector output voltage |
VND |
VI=10dBµ |
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1.1 |
1.4 |
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V |
VI=30dBµ |
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0 |
0.1 |
V |
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Schmitt-trigger level |
SH |
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10 |
18 |
25 |
dBµ |
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Schmitt-trigger hysteresis |
SHhy |
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1 |
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dB |
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Schmitt-trigger output voltage |
VSH |
VI=10dBµ |
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0.5 |
V |
VI=25dBµ |
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2.8 |
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V |
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VI=5dBµ |
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0.1 |
0.3 |
V |
Signal meter output voltage |
VSM |
VI=50dBµ |
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0.8 |
1.1 |
1.4 |
V |
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VI=80dBµ |
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1.3 |
1.6 |
2.0 |
V |
RSSI output voltage |
VRSSI |
VI=5dBµ |
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2.8 |
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V |
VI=35dBµ |
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0.5 |
V |
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Mixer conversion gain |
GM |
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20 |
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dB |
Mixer input frequency |
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90 |
MHz |
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Mixer input resistance |
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3.6 |
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kΩ |
Mixer output resistance |
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1.8 |
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kΩ |
IF amplifier input resistance |
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1.8 |
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kΩ |
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FM detector output impedance |
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2.4 |
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kΩ |
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Block Diagram
No.3890–2/7
LA8604M
Pin Assignment
Maximum power dissipation, Pd max – mW
Top view
Pd max – Ta
Ambient temperature, Ta – °C
Pin Functions
Number |
Name |
Equivalent circuit |
Description |
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1 |
OSC1 |
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Colpitts oscillator crystal connection. Nominal voltage is VCC. |
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2 |
OSC2 |
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Colpitts oscillator crystal connection. Nominal voltage is VCC–0.7V. |
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3 |
VREF |
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1.2V reference voltage output. |
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4 |
MIXOUT |
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Mixer buffer output. Nominal voltage is VCC–0.3V. |
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5 |
VCC |
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Supply voltage. |
6 |
IFIN |
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IF amplifier input. Nominal voltage is VCC–0.9V. |
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7 |
DC1 |
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IF amplifier feedback network connections. Nominal voltage is VCC–0.9V. |
8 |
DC2 |
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Continued on next page.
No.3890–3/7
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