SL6652/NA/MP [MICROSEMI]
FM, AUDIO SINGLE CHIP RECEIVER, PDSO20, SOP-20;
| 型号： | SL6652/NA/MP |
| 厂家： | 
Microsemi |
| 描述： | FM, AUDIO SINGLE CHIP RECEIVER, PDSO20, SOP-20 光电二极管 商用集成电路 |
| 文件： | 总11页 (文件大小：439K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
This product is obsolete.
This information is available for your
convenience only.
For more information on
Zarlink’s obsolete products and
replacement product lists, please visit
http://products.zarlink.com/obsolete_products/
THIS DOCUMENT IS FOR MAINTENANCE
PURPOSES ONLY AND IS NOT
RECOMMENDED FOR NEW DESIGNS
SL6652 IS FOR MAINTENANCE PURPOSES ONLY AND IS NOT RECOMMENDED FOR NEW DESIGNS
DS 3285 -1
SL6652
LOWER POWER IF/AF CIRCUIT (WITH RSSI) FOR FM CELLULAR RADIO
The SL6652 is a complete single chip mixer/oscillator, IF
amplifier and detector for FM cellular radio, cordless
telephones and low power radio applications. It features an
exceptionally stable RSSI (Received Signal Strength
Indicator) output using a unique system of detection. Supply
current is less than 2mA from a supply voltage in the range
2.5V to 7.5V.
FEATURES
Low Power Consumption (1.5mA)
Single Chip Solution
Guaranteed 100MHz Operation
Exceptionally Stable RSSI
APPLICATIONS
DP20
DG20
MP20
Cellular Radio Telephones
Cordless Telephones
QUICK REFERENCE DATA
Fig. 1 Pin connections (top view)
Supply Voltage 2.5V to 7 5V
Sensitivity 3µV
Co-Channel Rejection 7dB
VCC
VCC
20 - 40p
1n
VCC
10µ
33p
39k
330p
0V
X1
16
33k
18
33k
8p2
270p
220n
8p2
10p
17
15
50µA
6
5
1
2
1µA
100mV RMS
(3kHz DEVIATION)
DETECTOR
OSCILLATOR
INPUT
200mV
3
C
B
E
AUDIO
OUTPUTS
270p
40k
OSCILLATOR
TRANSISTOR
RMS
4
0V
40k
270p
SL6652
+15dB (ADJUSTABLE)
100MHz MAX
8µA
+90dB (LIGHTING)
1.5MHz MAX
19
20
1k
10n
11
2k
IF AMP
RSSI
MIXER
20k
RFC
RSSI
100n
8µA
1k
1n
200k
MIXER
INPUT
3µV
7
200k
13
BIAS
8
9
10
14
12
220n
1.5k
+1.2V
1.5k
10k
CERAMIC
FILTER
LOAD
RESISTOR
100n
10n
220n
(TO MATCH FILTER)
Fig. 2 block diagram
SL6652
ABSOLUTE MAXIMUM RATINGS
Supply voltage
8V
-55°C to +150°C
-55°C to +125°C
1V rms
Storage temperature
Operating temperature
Mixer input
ELECTRICAL CHARACTERISTICS
Test conditions (unless otherwise stated):
VCC = 2.5V to 7.5V, Tamb = -30°C to +85°C, IF = 455kHz, RF = 50MHz, Quad Coil Working Q = 30
Value
Characteristics
Units
Conditions
Min.
Max.
Typ.
Overall
Supply current
mA
µV
µV
dB
V
1.5
5
3
40
1.2
7
2.0
10
Sensitivity
20dB SINAD
12dB SINAD
RF input <500µV
Tamb = 25°C
AM rejection
Vbias
Co-channel rejection
1.0
1.4
dB
See Note 2
Mixer
kohm
kohm
µA
RF input impedance
OSC input impedance
OSC input bias
1
2
5
At Vbias
dB
dBm
mV
Mixer gain
3rd order input intercept
OSC input level
Rload = 1.5k
15
-10
180
100
300
70
MHz
OSC frequency
Oscillator
µA
Current sink
Hfe
fT
40
30
Tamb = 25°C
40 ... 70µA
40 ... 70µA
MHz
500
IF Amplifier
Gain
dB
kHz
kohm
90
1500
20
Frequency
Diff. input impedance
455
75
Detector
mV
dB
%
kohm
dB
Audio output level
Ultimate S/N ratio
THD
Output impedance
Inter-output isolation
125
5
60
0.5
40
65
5mV into pin 14
1kHz
RSSI Output (Tamb = +25°C)
Output current
µA
µA
µA/dB
dB
20
80
1.5
No input pin 14
Pin 14 = 2.5mV
See Note 1
Output current
Current change
Linear dynamic range
50
0.9
70
1.22
See Note 1
NOTES
1. The RSSI output is 100% dynamically tested at 5V and +20° C over a 70dB range. First the input to pin 14 is set to
2.5mV and the RSSI current recorded Then for each step of 10dB from -40 to +30dB the current is measured again. The
current change in each step must meet the specified figure for current change. The RSSI output is guaranteed monotonic
and free from discontinuities over this range.
2. Co-channel rejection is measured by applying a 3kHz deviation, 1 kHz modulated signal at an input level to give a 20dB
SINAD ratio. Then a 3kHz deviation, 400Hz modulated signal on the same frequency is also applied and its level increased
to degrade the SINAD to 14dB.
SL6652
5
18
200k
17
9
10
19
13
14
16
15
11
20
12
4k
200k
7
6
8
BAND-GAP
REFERENCE
2
4
3
BIAS
1
40k
40k
Fig. 3 Internal schematic
GENERAL DESCRIPTION
of oscillator is suitable for the type of crystal and frequency
required; it may not always be adequate to duplicate the
design shown in this data sheet.
The SL6652 is a very low power, high performance
integrated circuit intended for IF amplification and
demodulation in FM radio receivers. It comprises:
● A mixer stage for use up to lOOMHz
● An uncommitted transistor for use as an oscillator
● A current sink for biasing this transistor
● A limiting amplifier operating up to 1.5MHz
● A quadrature detector with differential AF output
● An RSSI (Received Signal Strength Indicator) output
IF amplifier
The limiting amplifier is capable of operation to at least 1
MHz and the input impedance is set by an external resistor to
match the ceramic filter. Because of the high gain, pins 12 and
13 must be adequately bypassed.
Mixer
Detector
The mixer is single balanced with an active load. Gain is
set externally by the load resistor although the value is
normally determined by that required for matching into the
ceramic filter. It is possible to use a tuned circuit but an
increase in mixer gain will result in a corresponding reduction
of the mixer input intercept point.
A conventional quadrature detector is fed internally from
the IF amplifier; the quadrature input is fed externally using an
appropriate capacitor and phase shift network. A differential
output is provided to feed a comparator for digital use,
although it can also be used to provide AFC.
The RF input is a diode-biased transistor with a bias
RSSI output
current of typically 300µA. The oscillator input is differential
but would normally be driven single-ended. Special care
should be taken to avoid accidental overload of the oscillator
input.
The RSSI output is a current source with value
proportional to the logarithm of the IF input signal amplitude.
There is a small residual current due to noise within the
amplifier(andmixer)butbeyondthispointthereisameasured
and guaranteed 70dB dynamic range. The typical range
extends to 92dB, independent of frequency, and with
exceptionally good temperature and supply voltage stability.
Oscillator
The oscillator consists of an uncommitted transistor and a
separate current sink. The user should ensure that the design
SL6652
Supply voltage
Detector
The SL6652 will operate reliably from 2.5V to 7.5V The
supply line must be decoupled with 470nF using short leads.
The internal band gap reference must be externally
decoupled. It can be used as an external reference but must
not be loaded heavily; the output impedance is tyically 14
ohms.
Fig. 4 Audio output vs input and temperature at 2.5V
Fig. 5 Audio output vs input and temperature at 5.0V
Fig. 6 Audio output vs input and temperature at +7.5V
Fig. 7 Audio output vs input and supply voltage at +25°C
Fig. 8 SINAD and input level
Fig. 9 AM rejection and input level
SL6652
Fig. 10 RSSI output vs input and supply voltage
Fig. 11 RSSI output vs input level and temperature
(Tamb = 20°C)
(VCC = 2.5V)
Fig. 12 RSSI output vs input level and temperature
(TCC = 5V)
Fig. 13 RSSI output vs input level and temperature
(VCC = 7.5V)
SL6652
Fig. 14 Signal + noise to noise ratio vs input level
Fig. 15 Supply current vs supply voltage
Fig. 16 Supply current vs temperature (VCC = 5V)
SL6652
C15 1n
R9 33k
22p
R8 33k
X1
2-20p
10µ
C17
10n
4.7µ
RFC
L2
C14
33p
R7
1.5K
8p2
C10
10n
C11
0.1µ
C16
270p
C13
0.22µ
C12
0.22µ
RSSI
8p2
R6
1.5k
20
19
18
17
16
15
14
13
12
11
FL1
CFW
455E
R10
10k
SL6652
MURATA CERAMIC
FILTER
1
2
3
4
5
6
7
8
9
10
C3
270p
R5
1.5k
C19
100n
C2
10p
C5
1n
C6
10n
C4
270p
R1
39k
C1
330p
L1
R2
1k
R3
1k
C7
0.47µ
L1
L2
X1
330 to 480µH
Q = 75 at 455kHz
C18
10n
R4
56R
C8
22n
C9
22n
250 - 410nH
Q = 100 at 50MHz
V
AF
AF
RF I/P
CC
50MHz 3rd O/T
Series Res.
Fig. 17 Circuit diagram of SL6652 application circuit
SL6652
CUSTOMER SERVICE CENTRES
HEADQUARTERS OPERATIONS
• FRANCE & BENELUX Les Ulis Cedex Tel: (1) 64 46 23 45 Tx: 602858F
Fax : (1) 64 46 06 07
GEC PLESSEY SEMICONDUCTORS
Cheney Manor, Swindon,
• GERMANY Munich Tel: (089) 3609 06-0 Tx: 523980 Fax : (089) 3609 06-55
• ITALY Milan Tel: (02) 66040867 Fax: (02) 66040993
• JAPAN Tokyo Tel: (03) 3296-0281 Fax: (03) 3296-0228
• NORTH AMERICA Integrated Circuits and Microwave Products Scotts Valley, USA
Tel (408) 438 2900 Fax: (408) 438 7023.
Hybrid Products, Farmingdale, USA Tel (516) 293 8686
Fax: (516) 293 0061.
• SOUTH EAST ASIA Singapore Tel: (65) 3827708 Fax: (65) 3828872
• SWEDEN Stockholm, Tel: 46 8 702 97 70 Fax: 46 8 640 47 36
• UNITED KINGDOM & SCANDINAVIA
Wiltshire SN2 2QW, United Kingdom.
Tel: (0793) 518000
Fax: (0793) 518411
GEC PLESSEY SEMICONDUCTORS
P.O. Box 660017
1500 Green Hills Road,
Scotts Valley, California 95067-0017,
United States of America.
Tel: (408) 438 2900
Swindon Tel: (0793) 518510 Tx: 444410 Fax : (0793) 518582
These are supported by Agents and Distributors in major countries world-wide.
Fax: (408) 438 5576
GEC Plessey Semiconductors 1992 Publication No. DS3285 Issue No. 1.0 May 1992
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as a representation relating to the products or services concerned. No warranty or guarantee express or implied is made regarding the capability, performance or suitability of any product or service. The Company
reserves the right to alter without prior knowledge the specification, design or price of any product or service. Information concerning possible methods of use is provided as a guide only and does not constitute
any guarantee that such methods of use will be satisfactory in a specific piece of equipment. It is the user's responsibility to fully determine the performance and suitability of any equipment using such information
and to ensure that any publication or data used is up to date and has not been superseded. These products are not suitable for use in any medical products whose failure to perform may result in significant injury
or death to the user. All products and materials are sold and services provided subject to the Company's conditions of sale, which are available on request.
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of any order or contract nor to be regarded as a representation relating to the products or services concerned. The products, their specifications, services and other
information appearing in this publication are subject to change by Zarlink without notice. No warranty or guarantee express or implied is made regarding the
capability, performance or suitability of any product or service. Information concerning possible methods of use is provided as a guide only and does not constitute
any guarantee that such methods of use will be satisfactory in a specific piece of equipment. It is the user’s responsibility to fully determine the performance and
suitability of any equipment using such information and to ensure that any publication or data used is up to date and has not been superseded. Manufacturing does
not necessarily include testing of all functions or parameters. These products are not suitable for use in any medical products whose failure to perform may result in
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