SL6609ANPDS [ZARLINK]
DIRECT CONVERSION FSK DATA RECEIVER; 直接转换FSK数据接收
| 型号： | SL6609ANPDS |
| 厂家： | 
ZARLINK SEMICONDUCTOR INC |
| 描述： | DIRECT CONVERSION FSK DATA RECEIVER |
| 文件： | 总20页 (文件大小：507K) |
| 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This product is obsolete.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/
JULY 1995
ADVANCE INFORMATION
DS4015 - 2.5
SL6609A
DIRECT CONVERSION FSK DATA RECEIVER
This device is an advanced direct conversion receiver for
operation up to 470MHz. The design is based on the SL6609
receiver and is a pin for pin product upgrade. The device
integrates all functions to translate a binary FSK modulated
RF signal into a demodulated data stream. Adjacent channel
rejection is provided using tuneable gyrator filters. To assist
operation in the presence of large interfering signals both RF
and audio AGC functions are provided.
TPX
1
2
28
27
IAGCOUT
IRFAMP
RFIADJ
LOY
GYRI
3
4
26
25
24
23
22
21
20
MIXA
GND
LOX
5
MIXB
VR
6
VREG
REGCNT
VCC1
VBATT
TPY
7
The device also includes a 1 volt regulator capable of
sourcing up to 5mA, a battery flag and the facility of incorporating
a more complex post detection filter off-chip. Both battery flag
and data outputs have open collector outputs to ease their
interface with other devices.
GTHADJ
TCADJ
8
9
BEC
10
11
12
13
14
19
18
VBG
BATTFL
DIGGND
TPLIMY
VCC2
17
16
15
BRF1
FEATURES
BRF2
■
■
Very low power operation - typ 3.0mW
Single cell operation for most of the device.
Limited functional blocks operating via an inverter
Superior sensitivity of -130dBm
Operation at wide range of paging data rates
512, 1200, 2400 baud
DATAOP
TPLIMX
■
■
NP28
Fig.1 Pin connections
■
■
On chip 1 volt regulator
Small package offering SSOP
ABSOLUTE MAXIMUM RATINGS
Supply voltage
6V
Storage temperature
Operating temperature
-55°C to +150°C
-20°C to +70°C
APPLICATIONS
■
■
■
■
Credit card pagers
Watch pagers
Small form factor pagers i.e. PCMCIA
Low data rate data receivers i.e. Security/remote
control
ORDERING INFORMATION
SL6609A / KG / NPDS
SL6609A / KG / NPDE
-
-
SSOP devices in anti-static sticks
SSOP devices in tape and reel
Fig.2 Block diagram of SL6609A
SL6609A
ELECTRICAL CHARACTERISTICS
These characteristics are guaranteed over the following conditions unless otherwise stated:
Tamb = 25°C, VCC1 = 1.3V, VCC2 = 2.7V
Value
Characteristics
Units
Comments
Pin
Typ
1.3
2.7
1.5
Max
2.8
3.5
1.8
Min
0.95
1.8
21
13
VCC1 < VCC2 - 0.7 volts
V
V
VCC1 - Supply voltage
VCC2 - Supply voltage
ICC1 - Supply current
21,27,28
Includes IRF. Does not include
regulator supply. Audio
AGC inactive
mA
11,13,14
Batt flag & Data O/P high
Pin 27 voltage: 0.3 - 1.3V
700
µA
550
1.0
ICC2 - Supply current
21,27,28
11,13,14
1
8
µA
µA
Power down ICC1
Power down ICC2
23
1.05
V
0.95
1 volt regulator
I Load = 3mA. Ext PNP.
ß >= 100, VCE = 0.1 volt
19
19
6
1.21
1.0
3
1.27
20
1.07
10
V
µA
V
µA
mA
1.15
0.93
0.25
Band gap voltage reference
Band gap current source
Voltage reference
Voltage reference sink/source
1 volt regulator load current
6
VCC1 > 1.1V
5
Stable data o/p when 3dB above
sensitivity. CBG and CVR = 2.2µF
ms
ms
µA
5
Turn on Time
Turn off Time
Fall to 10% of steady state current
CBG and CVR = 2.2µF
1
17
27
+/-4
Detector output current
RF current source
Current Source
(IRF)
Pin 27 voltage: 0.3 - 1.3V
600
µA
500
400
40
Decoder
Signal injected at TPX and TPY
B.E.R. < 1 in 30
µVrms
Sensitivity
5KHz deviation @ 1200 bits/sec
BRF capacitor = 1nF
14
14
14
9:7
500
1.0
7:9
100
Output mark space ratio
Data O/P Sink Current
Data O/P Leakage Current
Output logic low
Output Iogic high
µA
µA
2
SL6609A
ELECTRICAL CHARACTERISTICS
These characteristics are guaranteed over the following conditions unless otherwise stated:
Tamb = 25°C, VCC1 = 1.3V, VCC2 = 2.7V
Value
Characteristics
Units
Comments
Pin
Typ
Max
Min
Battery Economy
V
V
µA
µA
Input logic high
Input logic low
Input current
Input current
(VCC2 - 0.3)
10
10
10
10
Powered Up
Powered Down
Powered Up
Powered down transient initial
µA
0.3
1
8
0.05
6
Battery Flag Input
Input current
1
20
Battery Flag Output
Battfl Sink Current
Battfl leakage current
µA
µA
50
34
500
1
11
11
(VBATT-VR) > 20mV
(VBATT-VR) < -20mV
Mixers
Gain to "IF Test"
dB
41
LO inputs driven in parallel with
50mVRMS @ 50MHz.IF = 2kHz
See Figs.8a, 8b
See Fig.9
Equal to Pin 21 (VCC1)
RF input impedance
LO input impedance
LO DC bias voltage
24, 26
3, 5
3, 5
V
Audio AGC
µA
Max Audio AGC Sink Current
65
45
85
28
RECEIVER CHARACTERISTICS (GPS Demonstration board)
Measurement conditions unless stated VCC1 = 1.3V, VCC2 = 2.7V, LNA = 18dB Power Gain, 2dB Noise figure,
Carrier frequency 153MHz, BER 1 in 30, Tamb = 25°C
(TPx/TPy typically:- 160mVPP ± 10% for - 73dBm RF input to the LNA)
Value
Characteristics
Units
Comments
Pin
Max
Min
Typ
Sensitivity
-125
-128
-130
1200 bps Df = 4kHz
LO = -18dBm
dBm
dB
Intermodulation
56
73
52
68
1200 bps Df = 4kHz
LO = -18dBm
Adjacent channel
1200 bps Df = 4kHz
LO = -18dBm
dB
Channel spacing 25kHz
Centre frequency acceptance
Deviation acceptance
+/-2.3
+/-2.2
1200 bps Df = 4kHz
LO = -18dBm
kHz
kHz
1200 bps Df = 4kHz
LO = -18dBm
3
SL6609A
RECEIVER CHARACTERISTICS (GPS Demonstration board)
Measurement conditions unless stated VCC1 = 1.3V, VCC2 = 2.7V, LNA = 20dB Power Gain, 2dB Noise figure,
Carrier frequency 282MHz, BER 1 in 30, Tamb = 25°C
(TPx/TPy typically:- 160mVPP ± 10% for - 73dBm RF input to the LNA)
Value
Characteristics
Pin
Units
Comments
Max
Min
Typ
Sensitivity
-125
-122
-128
-125.5
-130
1200 bps Df = 4kHz
2400 bps Df = 4.5kHz
dBm
dBm
LO = -15dBm
Intermodulation (IP3)
56
53.5
52
49
1200 bps Df = 4kHz
2400 bps Df = 4.5kHz
LO = -15dBm
dB
Intermodulation (IP2)
Adjacent channel
52
47
1200 bps Df = 4kHz
LO = -15dBm
dB
dB
72.5
69.5
67
64
1200 bps Df = 4kHz
2400 bps Df = 4.5kHz
LO = -15dBm
Channel spacing 25kHz
Centre frequency acceptance
Deviation acceptance
+/-2.3
+/-2
+/-1.9
1200 bps Df = 4kHz
2400 bps Df = 4.5kHz
LO = -15dBm
kHz
kHz
+/-2.2
+/-2
1200 bps Df = 4kHz
2400 bps Df = 4.5kHz
LO = -15dBm
RECEIVER CHARACTERISTICS
Measurement conditions unless stated VCC1 = 1.3V, VCC2 = 2.7V, LNA = 22dB Power Gain, 2dB Noise figure,
Carrier frequency 470MHz, BER 1 in 30, Tamb = 25°C
(TPx/TPy typically:- 140mVPP ± 10% for - 73dBm RF input to the LNA)
Value
Characteristics
Pin
Units
Comments
Max
Typ
Min
Sensitivity
-123
-126
-128
1200 bps Df = 4kHz
LO = -15dBm
dBm
dB
Intermodulation
55.5
72.5
50
67
1200 bps Df = 4kHz
LO = -15dBm
Adjacent channel
1200 bps Df = 4kHz
LO = -15dBm
dB
Channel spacing 25kHz
Centre frequency acceptance
Deviation acceptance
+/- 2.3
+/- 2.2
1200 bps Df = 4kHz
LO = -15dBm
kHz
kHz
1200 bps Df = 4kHz
LO = -15dBm
4
SL6609A
OPERATION OF SL6609A
The SL6609A is a Direct Converson Receiver designed for
use up to 470MHz. It is available in a 28 pin SSOP package
and it integrates all the facilities required for the conversion of
an RF FSK signal to a base-band data signal.
Gyrator Filters
The on chip filters include an adjustable gyrator filter. This
may be adjusted with the use of an additional resistor between
Pin 4 and GND. This allows flexibility of filter characterstics
and also allows for compensation for possible process
variations.
Low Noise Amplifier
To achieve optimum performance it is necessary to
incorporate a Low Noise RF Amplifier at the front end of the
receiver. This is easily biased using the on chip voltage and
current sources provided.
Audio AGC
The Audio AGC fundamentally consists of a current sink
which is controlled by the audio (baseband data) signal. It has
three parameters that may be controlled by the user. These
are the Attack (turn on) time, Decay (duration) time and
Threshold level (see Figs.6 and 7). See Application note for
details.
All voltages and current sources used for bias of the RF
amplifier, receiver and mixers should be RF decoupled using
suitable capacitors (see Fig.4 for a suitable Low-Noise-
Amplifier).
Regulator
Local Oscillator
The on chip regulator must be used in conjunction with a
suitable PNP transistor to achieve regulation. As the
transistor forms part of the regulator feedback loop the
transistor should exhibit the following characteristics:-
The Local Oscillator signal is applied to the device in phase
quadrature. This can be achieved with the use of two RC
networks operating at the -3dB/45° transfer characteristic,
giving a full 90° phase differential between the LO ports of the
device. Each LO port of the device also requires an equal level
of drive from the Oscillator. (see Fig.5).
HFE > = 100 for VCE > = 0.1V
Pin Number
Pin Name
Pin Description
1
2
3
4
5
6
7
8
TPX
RFIADJ
LOY
GYRI
LOX
X channel pre-gyrator filter test-point. This can be used for input and output
RF current source adjustment pin
LO input channel Y
Gyrator current adjust pin
LO input channel X
VREF 1.0 V internal signal ground
Y channel pre-gyrator filter test point, input or output
Audio AGC gain and threshold adjust. RSSI signal indicator
Audio AGC time constant adjust
Battery economy control
Battery flag output
Y channel limiter (post gyrator filter) test point, output only
Supply connection
VR
TPY
GTHADJ
TCADJ
BEC
BATTFL
TPLIMY
VCC2
DATAOP
TPLIMX
BRF2
BRF1
DIG GND
VBG
VBATT
VCC1
REGCNT
VREG
MIXB
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
Data output pin
X channel limiter (post gyrator filter) test point, output only
Bit rate filter 2, input to data output stage
Bit rate filter 1, output from detector
Digital ground
Bandgap voltage output
Battery flag input voltage
Supply connection
1V regulator control external PNP drive
1V regulator output voltage
Mixer input B
Ground
GND
MIXA
IRFAMP
Mixer input A
Current source for external LNA. Value of current output will decrease at high mixer
input signal levels due to RF AGC
Audio AGC output current
28
IAGCOUT
5
SL6609A
Fig.3 Application circuit board
6
SL6609A
COMPONENTS LIST FOR APPLICATION BOARD At 282MHz, 25kHz Channel Spacing.
(LO Circuit in Fig.3)
Resistors
C18
C19
C20
C21
C22
C23
C24
C25
C26
C27
C28
C29
C30
C31
C32
C33
C34
C35
VC1
VC2
VC3
1n
not used
1n
1n
not used
1n
1n
1n
6p8
1n
1n
100p
2u2
2u2
4p7
4p7
3p3
not used
1-10p
1-10p
1-10p
R1
open circuit
R2
R3
open circuit
100
R4
100k
R5
1k
R6
1k
R7
100
R8
R9
open circuit
220k
R10
R11
R12
R13
R14
R15
R16
R17
R18
R19
R20
R21
R22
1M
100k (6)
not used
1k5(1)
4k7
4k7
33k
not used
0R (3)
10k
620
1k
open circuit
Inductors
L1
L2
L3
L4
L5
68n (4)
not used (3)
470n
39n
680n
Capacitors
C1
1n
C2
C3
C4
2p7
4p7
1n
C5
C6
C7
C8
2p7
2u2
1n
100n
1n (2)
2u2
100n
1n
1n
1n
1n
1n
Active Components
Q1
Q2
Q3
Q4
Q5
D1
FMMT589
2SC5065 (Toshiba)
BFT25A (Philips)
not used
C9
C10
C11
C12
C13
C14
C15
C16
C17
C17a
2SC5065 (Toshiba)
Panasonic MA862 (5)
Misc
T1
30nH 1:1
Coilcraft M1686-A
5th Overtone
94.075MHz
Xtal
1n
1n
Notes
1.
2.
The values of R13 is determined by the set-up proce-
dure. See Application Note.
4.
L1and C26 form the low noise matching network for the
RF amplifier. The values given are for the RF amplifier
specified in the Applications Circuit with no Audio AGC
connected. i.e. R17 and D1 omitted.
The value of C9 is determined by the output data rate.
Use 2nF for 512bps, 1nF for 1200bps and 470pF for
2400bps.
5.
6.
Suggested diode for use with the Audio AGC circuit
(see Fig.6) (D1 is not included on the general demon-
stration circuit).
3.
L2 is used in the Audio AGC circuit (see Fig. 6). For the
characteristics of the Audio AGC current source see
Fig.7. If the audio AGC is not required then the current
source (Pin 28) may be disabled by connecting Pin 9
(TCADJ) to VR (Pin 6) and by connecting Pin 28
(IAGCOUT) to Vcc1, (R18). The voltage at Pin 8 may
still be used as an RSSI. R9, C8, C14, C19, R17 and
D1 may then be omitted. See Fig.6 for AGC
component values.
The value of R11 is dependent on the data output load.
R11 should allow sufficient current to drive the data
output load.
7
SL6609A
COMPONENTS LIST FOR APPLICATION BOARD At 470MHz, 25kHz Channel Spacing.
(LO circuit is 50Wnetwork as in Fig.5 - crystal oscillator not specified)
Resistors
C14
C15
C16
C17
C18
C19
C20
C21
C22
C23
C24
C25
C26
C27
C28
C29
C30
C31
C34
VC1
1n
1n
1n
1n
1n
not used
1n
R1
R2
R3
R4
R5
R6
R7
R8
open circuit
open circuit
100
100k
100
100
100
open circuit
220k
1n
not used
not used
1n
R9
R10
R11
R12
R13
R14
R15
R16
R17
R18
R22
1M
100k (2)
300 (3)
3k9 (1)
1n
open circuit
not used
not used
100p
2u2
2u2
1p5
1-3pF
4k7
4k7
33k
open circuit (4)
0R (4)
open circuit
Inductors
Capacitors
L1
L2
T1
47nH (5)
C1
C2
C3
1n
3.3pF
1n
not used (3)
16nH 2 Turn 1:1 (Coilcraft) Q4123-A
C4
C5
C6
C7
C8
C9
C10
C11
C12
C13
1n
Active Components
3.9pF
2u2
1n
100n
1n (2)
2u2
100n
1n
Q1
Q2
Q3
Q4
Q5
D1
Zetex FMMT589
Philips BFT25A
Not Used
Philips BFT25A(3)
Philips BFT25A
Panasonic MA862(6)
1n
Notes
1.
2.
The values of R13 is determined by the set-up proce-
dure. See Application Note.
Pin 9 (TCADJ) to VR (Pin 6) and by connecting Pin 28
(IAGCOUT) to Vcc1, (R18). The voltage at Pin 8 may
still be used as an RSSI. R9, C8, C14, C19, R17 and
D1 may then be omitted.
The value of "C9" is determined by the output data rate.
Use 2nF for 512bps, 1nF for 1200bps and 470pF for
2400bps.
5.
L1and C26 form the low noise matching network for the
RF amplifier. The values given are for the RF amplifier
specified in the Applications Circuit with no Audio AGC
connected. i.e. R17 and D1 omitted.
3.
4.
R12 & Q4 form a dummy load for the regulator.
Permitted load currents for the regulator are 250µA to
5mA. The 1V regulator (output Pin 23) can be switched
off by connecting Pin 23 directly to VCC2. Q1, Q4, R12
and C12 must then be omitted
6.
7.
Suggested diode for use with the Audio AGC circuit
(D1 is not included on the general demonstration
circuit).
L2 is used in the Audio AGC circuit (see Fig.6). For the
characteristics of the Audio AGC current source see
figure 7. If the Audio AGC is not required then the
current source (Pin 28) may be disabled by connecting
The value of R11 is dependent on the data output load.
R11 should allow sufficient current to drive the data
output load.
8
SL6609A
Fig.4 RF amplifier
RF Amplifier Components Values
Resistors
R14, R15
R13
Capacitors
4k7
see note 1
47k
C13, C15
C16, C17
C20, C21
C24, C25
L2
1nF
1nF
1nF see note 2
1nF
820nH
Active components
D1 MA862 (Panasonic)
R22
Notes:
(1) The value of R13 is determined by the set up procedure (See "Set up for optimum performance").
(2) C20 and C21 are purely for deomonstration purposes. Pin 24 and Pin 26 may be DC coupled provided that no DC voltage is applied to the
mixer inputs.
Frequency Dependent Components
153MHz
280MHz
6.8p
450MHz
not used
not used
39nH
C26
C27
L1
not used
not used
150nH
not used
68nH
C34
T1
3p3
100nH
2p2
30nH
1p5
16nH
Coilcraft N2261-A
1-10pF
Coilcraft M1686-A
1-10pF
Coilcraft Q4123-A
1-3pF
VC1
Q4, Q5
Toshiba 2SC5065
Toshiba 2SC5065
Philips BFT25A
(See also Lo drive Network)
Fig.5 Local oscillator drive network
Higher Input Impedance (crystal oscillator input)
LO Drive Network Component Values
153MHz
280MHz
450MHz
50Ohm input impedance (External LO injection)
C3
C2
C5
R3
R7
Set by load allowable on crystal oscillator (typical 4p7)
153MHz
10p
10p
280MHz
5p6
5p6
450MHz
3p3
3p9
10p
10p
100
100
5p6
5p6
100
100
3p3
3p9
100
100
C2
C5
C3, C4, C18 = 1n
R3, R5, R6, R7 = 100Ohms
R5, R6 = 1k
C4, C18 = 1n
9
SL6609A
Fig.6 AGC Schematic
Fig.7 Audio AGC current vs. IP power at 25°C
10
SL6609A
S11
1
MAG
0.969
0.958
0.942
0.917
0.893
0.858
0.832
0.806
0.781
0.755
0.743
0.725
0.703
0.680
0.666
0.653
0.636
0.615
0.604
0.600
ANG
-7.20
FREQ
50.000
2
-14.45
-20.59
-26.40
-33.26
-39.84
-44.78
-49.01
-54.00
-59.53
-64-35
-68.43
-73.01
-78.74
-83.76
-87.48
-91.32
-97.17
-102.84
-105.23
.5
100.000
150.000
200.000
250.000
300.000
350.000
400.000
450.000
500.000
550.000
600.000
650.000
700.000
750.000
800.000
850.000
900.000
950.000
1000.00
.2
50MHz
1GHz
Fig.8a SL6609A Mixer A input S-Parameters
S11
1
MAG
0.970
0.960
0.945
0.919
0.902
0.872
0.850
0.825
0.803
0.776
0.760
0.739
0.717
0.698
0.683
0.666
0.659
0.647
0.637
0.634
ANG
-7.06
FREQ
50.000
2
.5
-13.83
-19.90
-25.70
-32.18
-38.03
-43.07
-48.27
-53.58
-58.49
-63.08
-67.98
-72.63
-76.96
-81.09
-85.49
-89.51
-93.90
-98.42
-102.40
100.000
150.000
200.000
250.000
300.000
350.000
400.000
450.000
500.000
550.000
600.000
650.000
700.000
750.000
800.000
850.000
900.000
950.000
1000.00
.2
50MHz
1GHz
Fig.8b SL6609A Mixer B input S-Parameters
S11
1
MAG
0.993
0.995
0.997
0.997
0.996
0.986
0.965
0.936
0.902
0.872
0.838
0.804
0.798
0.810
0.784
0.779
0.790
0.788
0.768
0.743
ANG
-4.17
FREQ
50.000
2
.5
-8.43
-12.88
-17.57
-22.63
-28.16
-33.87
-39.17
-43.88
-48.54
-52.81
-56.60
-59.47
-65.19
-71.49
-75.97
-82.54
-91.16
-100.20
-108.52
100.000
150.000
200.000
250.000
300.000
350.000
400.000
450.000
500.000
550.000
600.000
650.000
700.000
750.000
800.000
850.000
900.000
950.000
1000.00
.2
50MHz
1GHz
Fig.9 SL6609A LO X,Y inputs S-Parameters
11
SL6609A
Fig.10a AC parameters vs. supply and temperature
Conditions:- 282MHz GPS demonstration board i.e. 20dB
LNA, 2dB noise figure, carrier frequency
282MHz, 1200bps baud rate, 4kHz deviation
frequency, BER 1 in 30.
Vcc1 = 1.0V, Vcc2 = 1.8V
Vcc1 = 1.3V, Vcc2 = 2.7V
Vcc1 = 3.0V, Vcc2 = 4.0V
12
SL6609A
Fig.10b AC parameters vs. supply and temperature
Conditions:- 282MHz GPS demonstration board i.e. 20dB
Vcc1 = 1.0V, Vcc2 = 1.8V
Vcc1 = 1.3V, Vcc2 = 2.7V
Vcc1 = 3.0V, Vcc2 = 4.0V
LNA, 2dB noise figure, carrier frequency
282MHz, 1200bps baud rate, 4kHz deviation
frequency, BER 1 in 30.
13
SL6609A
Fig.11 DC parameters vs. supply and temperature
(IP3 vs audio AGC both on and off)
Conditions:- ICC1 includes 500µA LNA current but does not
include the regulator supply (audio AGC inactive).
ICC2 measured with BATT FLAG and DATA O/P
HIGH, Fc = 282MHz.
Vcc1 = 0.98V, Vcc2 = 1.78V
Vcc1 = 1.3V, Vcc2 = 2.7V
Vcc1 = 3.0V, Vcc2 = 4.0V
Note 1- IP3 is level above wanted needed to reduce
receiver to 1 in 30 B.E.R.
14
SL6609A
Fig.12 Sensitivity, IP3 vs Receiver Gain
Fig.13 Sensitivity, adjacent Channel vs Receiver Gain
15
SL6609A
- 1 2 2
5 6
5 5
5 4
5 3
5 2
- 1 2 3
- 1 2 4
- 1 2 5
- 1 2 6
- 1 2 7
- 1 2 8
- 1 2 9
Sensit ivit y
IP3
LO Dr iv e Le v e l ( d Bm )
Fig.14 Sensitivity, IP3 vs LO level
- 1 2 2
- 1 2 3
- 1 2 4
- 1 2 5
- 1 2 6
- 1 2 7
- 1 2 8
- 1 2 9
7 3 .5
7 3
Sensit ivit y
ACR
7 2 .5
7 2
7 1 .5
7 1
LO Dr iv e Le v e l ( d Bm )
Fig.15 Sensitivity, Adjacent Channel vs LO level
16
SL6609A
17
SL6609A
PACKAGE DETAILS
Dimensions are shown thus: mm (in)
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© GEC Plessey Semiconductors 1995 Publication No. DS4015 Issue No. 2.5 July 1995
TECHNICAL DOCUMENTATION - NOT FOR RESALE. PRINTED IN UNITED KINGDOM.
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相关型号：
SL6619/KG/TP1N
Paging Receiver, Bipolar, PQFP32, 7 X 7 MM, 1.0 MM HEIGHT, MS-026ABA, TQFP-32
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