Obsolescence Notice
This product is obsolete.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/
MGCM01
TDMA/AMPS Baseband Interface
DS2497
ISSUE 3.3
December
2002
Features
q
q
q
q
q
q
q
q
q
Ordering Information
MGCM01/KG/TP1N
IS136 TDMA/AMPS Compatible
Channel Filtering (30kHz)
FM Demodulator
RSSI Output
Dual IF Synthesisers
Flexible Power Control
Fully Programmable via Serial Bus
3 Volt operation
48-pin TQFP package
Applications
q
Dual Mode TDMA/AMPS Mobile Telephones
q
Dual Band (PCS1900/900) TDMA/AMPS
The inputs for the receive path are I and Q signals at an IF
of 60kHz. The I and Q signals are filtered by a 60kHz
switched capacitor bandpass filter and are then
demodulated to give baseband I and Q signals. The
MGCM01 also provides voltage gain so that the baseband
outputs can be input directly to an A to D converter.
The internal FM discriminator can be used for demodulating
AMPS signals; the receive path also provides RSSI.
Transmit I and Q baseband signals from D to A converters
can be input directly to the MGCM01, which provides
reconstruction filters and a variable gain buffer.
The two PLL synthesisers are used for generation of the
receive and transmit IF LO signals.
Mobile Telephones
q
PCS 1900 TDMA Mobile Telephones
Description
The MGCM01 provides channel filtering for IS136 TDMA/
AMPS mobile telephones.
RECEIVE SECTION
RXI IP1/2
13/14
4/3
RXI OP1/2
ATTENUATOR
S
RXQ IP1/2
15/16
90°
60kHz
2/1
10
ATTENUATOR
RXQ OP1/2
AUDIO FB
AUDIO
RSSI FB
RSSI
SCLK
SDAT
SLATCH
RESET
PCA
43
39
44
46
45
CONTROL
FM
DISCRIMINATOR
RSSI
9
11
7
28
TXI IP1/2
TXQ IP1/2
33/32
TX FM
TXI OP1/2
TXQ OP1/2
36/35
TRANSMIT
SECTION
29/30
26/27
RX VCO
UHF LOCK
TX VCO
20
25
22
SYNTHESISERS
18
RX PD
LOCK DET
TX PD
RX
LOCK
SELECT
TX
38
24
Figure 1 - MGCM01 block diagram
MGCM01
GND
RSSI FB
AUDIO FB
AUDIO
GND
RSSI
V
DD
GND
RXI OP1
RXI OP2
RXQ OP1
RXQ OP2
PIN 1
PIN 48
RXI IP1
RXI IP2
RXQ IP1
RXQ IP2
V
DD
RX PD
GND
RX VCO
GND
TX VCO
V
DD
TX PD
MGCM01
RTUNE
VBG
RESET
PCA
SLATCH
SCLK
GND
VDD
TCXO
SDAT
LOCKDET
GND
UHF LOCK
TXQ OP1
TXQ OP2
TX FM
TXI OP1
TXI OP2
V
DD
TXI IP2
TXI IP1
GND
TXQ IP2
TXQ IP1
TP48
Figure 2 - Pin connections - top view
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
Name
RXQ OP-
RXQ OP+
RXI OP-
RXI OP+
GND
V
DD
RSSI
GND
AUDIO
AUDIO FB
RSSI FB
GND
RXI IP+
RXI IP-
RXQ IP+
RXQ IP-
V
DD
RX PD
GND
RX VCO
GND
TX VCO
V
DD
TX PD
Type
O
O
O
O
GND
PWR
O
GND
O
I
I
GND
I
I
I
I
PWR
O
GND
I
GND
I
PWR
O
Description
Baseband receive Q output-
Baseband receive Q output+
Baseband receive I output-
Baseband receive I output+
Ground (substrate connection)
Power - RSSI/demodulator
RSSI output
Ground - RSSI/demodulator
Demodulator audio/data output
Demodulator feedback
RSSI feedback
Ground - receive section
Receive I Input+
Receive I Input-
Receive Q Input+
Receive Q Input-
Power - receive section
Rx PLL charge pump output
Ground (substrate connection)
Receive IF PLL input
Ground - synthesiser
Transmit IF PLL input
Power - synthesiser
Tx PLL charge pump output
Pin
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
Name
UHF LOCK
TXQ OP+
TXQ OP-
TX FM
TXI OP+
TXI OP-
V
DD
TXI IP-
TXI IP+
GND
TXQ IP-
TXQ IP+
GND
LOCK DET
SDAT
TCXO
V
DD
GND
SCLK
SLATCH
PCA
RESET
V
BG
RTUNE
Type
I
O
O
O
O
O
PWR
I
I
GND
I
I
GND
O
I
I
PWR
GND
I
I
I
I
O
I
Description
UHF synthesiser lock input
Transmit Q output+
Transmit Q output-
Transmit FM output
Transmit I output+
Transmit I output-
Power - transmit section
Transmit I input-
Transmit I input+
Ground TX channel
Transmit Q input-
Transmit Q input+
Ground (substrate connection)
Synthesiser lock detect output
Serial interface, serial data in
19·44MHz reference from TCXO
Power supply - digital
Ground - digital
Serial interface clock
Serial interface latch
Power control assert
Chip master reset (active low)
Bandgap reference decoupling
Bias Ref. - connect 100kΩ to GND
Table 1 Pin descriptions
Absolute Maximum Ratings
Supply voltage (V
DD
)
Voltage applied to any pin
Operating temperature
-0·3V
to
+3·9V
-0·3V
to V
DD
+0·3V
-30°C to
+100°C
Storage temperature
Max. junction temperature
ESD (Human Body Model)
-55°C to +150°C
+150°C
2kV
2
MGCM01
Electrical Characteristics
T
AMB
= -30°C to +85°C, V
DD
= 3V
±10%,
V
EE
= 0V. These characteristics are guaranteed by either production test
or design. They apply within the specified ambient temperature and supply voltage ranges unless otherwise stated.
Value
Characteristic
Supply Current
Sleep
Power down
Receive section (I/Q)
Receive section (FM)
Receive section (I/Q)
Receive section (FM)
Transmit section (I/Q)
Transmit section (FM)
Logic Inputs
Input voltage high, V
IH
Input voltage low, V
IL
Input current
Input capacitance
Logic Outputs
Output voltage low, V
OL
Output voltage high, V
OH
Output current
Serial Control Timing
SDATA set up time, t
1
SDATA hold time, t
2
SCLK pulse width t
3
SLATCH set up time, t
4
SLATCH pulse width, t
5
SCLK period, t
6
Switch on/off times
TX turn on/turn off time
RX turn on/turn off time
TCXO Input
Input resistance
Input capacitance
Input sensitivity
Frequency
Min.
Typ.
20
550
10
9
Max.
Units
Conditions
100
12·5
12
14
14
8
5·5
5·2
2·8
0·8V
DD
µA
µA
mA
mA
mA
mA
mA
mA
V
V
nA
pF
V
V
mA
Reference circuits active
At 25°C and V
DD
= 3·0V
At 25°C and V
DD
= 3·0V
0·2V
DD
10
10
0·4
0·6V
DD
±1
20
20
50
20
50
100
0·5
1·0
10
10
0·5
19·44
V
IN
= 0V to V
DD
See Figure 3
ns
ns
ns
ns
ns
ns
ms
ms
kΩ
pF
Vp-p
MHz
2
AC coupled
cont…
t
1
SLCK
t
3
t
2
SDATA
BIT 23
BIT 22
t
6
BIT 21
BIT 0
t
4
SLATCH
t
5
Figure 3 - Serial bus timing diagram
3
MGCM01
Electrical Characteristics (continued)
Value
Characteristic
Receive - General
Input impedance
Output impedance
Input voltage RXI, RXQ
Output voltage RXI, RXQ
Out of band 60kHz 1dB
compression
Out of Band 120 kHz 1dB
compression
Input IP3
Receive (I/Q Mode)
Input signal
Gain
I/Q gain matching
I/Q quadrature accuracy
l/Q bandwidth Matching
Group delay ripple
Gain ripple
Noise
Output 1dB compression
LO breakthrough
Other spurious signals
Receive (FM Mode)
Input signal
Audio output
Receive Filter (Bandpass)
Centre frequency
3dB bandwidth
Stop band attenuation
0 to 3kHz
3 kHz to 10kHz
10 kHz to 22kHz
38kHz
82kHz
98kHz to 110kHz
110kHz to 117kHz
117kHz to 123kHz
123kHz to 1·36MHz
1·36MHz to 1·52MHz
1·52MHz to 10MHz
Image attenuation
0 to
-10kHz
-10kHz
to
-42kHz
-42kHz
to
-78kHz
-78kHz
to
-105kHz
-105kHz
to
-1·36MHz
-1·36MHz
to
-1·52MHz
-1·52M
Hz to
-10MHz
Gain Ripple
Min.
Typ.
Max.
Units
Conditions
10
2
V
DD
/2
V
DD
-1·6
V
DD
-1·4
V
DD
-1·2
125
13
0·65
1·0
0·53
56
TBD
0·5
14
1·5
3
10
22
-4
0
kΩ
kΩ
V
V
mV
mV
V
mV
dB
dB
deg
%
µs
p-p
dB p-p
µV
V p-p
mV
dB
µV
mV
kHz
kHz
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
Differential
Differential
Input normally AC coupled
Note 2
Note 2
Note 3
Differential (gain = 56dB)
See Table 6
54
-0·5
58·5
0·5
TBD
2
16
2·2
17
0 to 12·5kHz
0 to 12·5kHz
10Hz to 100kHz referred to input
Differential
60kHz
30
500
60
±16
67
61
48
18
18
48
61
68
71
36
71
61
40
25
40
61
36
61
69
63
51
20
20
50
63
70
73
48
73
±
18
Output SINAD = 12dB
Defined by external components
Note 4
Figure 5
Relative to signal at 60kHz
Note 5
Note 5
Figure 6
28
48
1·0
1·5
cont…
4
电子竞赛
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
