ZARLINK MGCR01

MGCR01
Dual Mode IF Receiver for TDMA/AMPS and CDMA/AMPS
Datasheet
Features
•
•
•
•
•
•
•
DS4721
ISSUE 4.4
November 2001
Ordering Information
MGCR01/KG/QP1S
MGCR01/KG/QP1T
Dual IF Inputs 50 to 250 MHz
90dB AGC Gain Control
IQ demodulator
On chip oscillator provides high accuracy
quadrature LO generation
Optional IF Output
3 Volt Power Supply
28 lead QSOP Package
and differential I and Q baseband outputs. The
MGCR01 interfaces directly with MGCM01 for
TDMA/AMPS (using 60kHz low IF) and MGCM03 or
MGCM04 for CDMA and AMPS applications. The on
chip oscillator and prescaler are also compatible with
the PLL synthesisers on these devices.
Description
The MGCR01 is designed for use in dual mode
mobile phones (TDMA/AMPS and CDMA/AMPS).
The circuit provides IF amplification with gain control
IF OUT
IF VEE
IF VCC
FM IFIN
I OUT
CDMA IFIN
Q OU T
AGC
Gain
Control
Temperature
Comp.
DLL
PRESCALER
Overload
Indicator
STARTUP
ENABLE
BAND 1900
DIV2 EN
Mode
Control
VHF VCC
VHF VEE
MODE CDM
VHF BUF
VHF RES
OVERLOAD DET
Figure 1 - Block Diagram
1
MGCR01
IF VCC
IF OUTB
IF OUT
IF VEE
GND
CDMA IFIN
CDMA IFINB
FM IFIN
FM IFINB
AGC
AGCB
MODE CDMA
ENABLE
GND
VHF VCC
I OUTB
I OUT
VHF VEE
OVERLOAD DET
VHF RES
VHF RESB
BAND 1900
VHF BUF
VHF BUFB
DIV2 EN
Q OUT
Q OUTB
STARTUP
QSOP28
Figure 2 - Pin Connections
Pin No.
Pin Name
Description
1
IF VCC
2
IF OUTB
IF ouput
3
IF OUT
IF output
4
IF VEE
Ground for IF inputs and AGC blocks
5
GND
Substrate ground
6
CDMA IFIN
IF input (CDMA)
7
CDMA IFINB
IF input (CDMA)
8
FM IFIIN
IF input (FM)
9
FM IFINB
IF inputs (FM) (AC ground)
10
AGC
AGC Control for IF section
11
AGCB
12
MODE CDMA
13
ENABLE
14
GND
15
STARTUP
16
QOUTB
Q channel baseband output
17
QOUT
Q channel baseband output
18
GND
19
VHF BUFB
VHF oscillator buffered output for synthesiser
20
VHF BUF
VHF oscillator buffered output for synthesiser
21
BAND 1900
VHF oscillator mode (see table 1)
22
VHF RESB
VHF VCO resonator
23
VHF RES
VHF VCO resonator
24
OVERLOAD DET
25
VHF VEE
26
I OUT
I channel baseband output
27
I OUTB
I channel baseband output
28
VHF VCC
Supply for IF inputs and AGC blocks
AGC control for IF sections (AC ground)
CDMA/FM input select
Power up AGC sections of device
Substrate Ground
Power up Oscillator, DLL and Mixer
Ground
Overload detector output
Ground for VHF VCO and DLL blocks
Supply for VHF and DLL blocks
Table 1 - Pin Description
2
MGCR01
X = Don’t Care
Description
ENABLE
STARTUP
MODE CDMA
BAND 1900
Conditions
Standby Mode
0
0
X
X
All circuits powered down
except logic inputs
Start up Mode
0
1
X
1
For high band IF
0
1
X
0
For low band IF
Turns on VCO circuits, DLL
quadrature generation,
prescaler and IQ
demodulator. All other
circuits remain powered
down
CDMA mode
1
1
1
1
For high band IF
1
1
1
0
For low band IF
All circuits operational
except for IF output buffer,
CDMA input stage selected.
FM Mode
1
1
0
0
All circuits operational
except for IF output buffer,
FM input stage selected.
Alternative FM
mode
1
1
0
1
Note 4
CDMA IF AGC
only mode
1
0
1
X
Demodulator and LO
generation circuitry powered
down. IF output buffer
enabled
FM IF AGC
1
0
0
X
Demodulator and LO
generation circuitry powered
down. IF output buffer
enabled.
Table 2 - Electrical Characteristics (Mode Control)
Notes:
1. STARTUP mode is provided to allow VCO/DLL/prescalers to stabilise before signal path is activated.
This is a power-saving feature since the signal path is redundant during this period. If this feature is not
required, the ENABLE and STARTUP control pins can be shorted together so that all circuitry is activated
at the same time.
2. In high band mode (Band 1900 = 1) the VCO operates at twice the IF frequency. For example if IF =
210.38MHz then the oscillator operates at 420.76MHz. A delay locked loop (DLL) circuit then generates the
quadrature LO signals.
3. In low band mode (Band 1900 = 0) the VCO operates at 4 times the IF frequency. for example if IF =
85.38MHz the oscillator operates at 341.52MHz. This is then divided and uses DLL circuit to provide the
quadrature LO signals.
4. This mode can be used for FM. The VCO operates at twice the LO frequency. This mode is not normally
used as a large tuning range is required on the VCO.
3
MGCR01
DLL and Prescaler divide ratios
The BAND 1900 and DIV2 EN inputs allow the overall divide ratio to control the total divide ratio in MGCR01 as
shown in the following table.
BAND 1900
DIV2 EN
DLL Divide Ratio
Prescaler Divide
Ratio
Total Divide Ratio
1
1
2
2
4
0
1
4
2
8
1
0
2
4
8
0
0
4
2
8
Table 3 - Prescaler Ratios
Notes:
if DIV2 EN is set low then the total divider ratio is always 8.
If DIV2 EN is set high then the prescaler divide ratio is always 2. For example with BAND 1900 high and if the
oscillator frequency is 300MHz, then the DLL output (the mixer LO frequency) will be 150MHz and the
prescaler output will be 75MHz.
Description
Min
Typ
Supply Voltage
Max
Units
4.0
Volts
Comments
Operation temperature, Tamb
-30
+100
°C
Storage temperature, Tstg
-40
+125
°C
Junction temperature, Tj
+150
°C
Power dissipation
350
mW
Vcc+0.6
Volts
All pins except VCC and GND
All pins except VCC and GND
Maximum Pin Voltage
Minimum Pin Voltage
-0.6
Volts
ESD voltage
1.75
kV
Ambient temperature
Human Body Metal
Table 4 - Absolute Maximum Ratings
Electrostatic handling precautions must be applied.
4
MGCR01
Tamb= 30°C to +70°C, VCC = +2.7 to +3.6. These characteristics are guaranteed by either production test or
design. They apply within the specified ambient temperature and supply voltage unless otherwise stated.
Value
Characteristic
General
Supply Voltage
Operating Temperature
DC Common Mode voltages
I OUT, I OUTB (CDMA Mode)
I OUTB, QOUTB
I OUT<Q OUT (FM Mode)
I OUTB, Q OUTB
Conditions
3.6
85
V
°C
All VCC Pins
Ambient See note 1
0.1
13
23
23
13
18
mA
mA
mA
mA
mA
mA
VCC+0.1
10
10
V
µA
µA
ms
V
kΩ
Typ
Max
2.7
-30
3.0
27
0.03
8
14
14
8
11
Current Consumption
Standby Mode
Startup Mode
CDMA Mode
FM Mode
CDMA AGC only Mode
FM AGC only Mode
Mode Control Logic
CMOS input logic high, VIH
CMOS input high current, IIH
CMOS input low current, IIL
Switching time between any two modes
AGC Control
AGC Input impedance
Units
Min
VCC-0.5
-10
-10
3
0.1
100
130
2.6
160
VCC-0.8
VCC-0.6
VCC-0.4
V
VCC-0.8
VCC-0.6
VCC-0.4
V
All logic inputs
All logic inputs
All logic inputs
Table 5 - Electrical Characteristics (DC specifications)
Notes:
1. Specifications are guaranteed over -30 to + 70°C, however operation is guaranteed over the extended
range of -30 to +85°C with minimal variation in specified parameters.
5
MGCR01
Tamb= 30°C to +70°C, VCC = +2.7 to +3.6. These characteristics are guaranteed by either production test or
design. They apply within the specified ambient temperature and supply voltage unless otherwise stated.
Frequency = 210.38MHz
Value
Characteristic
Units
Min
Typ
46
48
Conditions
Max
CDMA
Max Voltage Gain to demodulator
output
Min Voltage Gain to demodulator output
Max Voltage Gain to IF buffer output
-55
38
Min Voltage Gain to IF buffer output
AGC control Max
-47
41
-51
-49
2.6
AGC control Min
0.1
Gain slope
40
dB
AGC = 2.6v
dB
AGC = 0.1V
dB
IF mode
dB
IF mode
V
Gain = Max
V
Gain = Min
dB/V
Gain slope linearity
6
90
dB/V
Gain temperature stability
-2
2
dB
-0.1
0.1
dB
Within channel
bandwidth
(1.25MHz)
6.5
dB
Rs (500Ω)
Channel gain variation
@ 210.38MHz
NFGainmax
5.5
Input V1dBGainmin
104
-13
IIP3Gainmax
69
-48
Input impedance
110
-7
IF Frequency
50
CDMA to Amps isolation
30
dBµV
dBm
Minimum gain
Power (500Ω)
dBµV
dBm
Max gain
Power (500Ω)
Ω
500
250
Over gain control
range
With addition of
external resistor
across IF inputs
MHz
dB
Table 5 - Electrical Characteristics (DC specifications) - Continued
6
MGCR01
Tamb= 30°C to +70°C, VCC = +2.7 to +3.6. These characteristics are guaranteed by either production test or
design. They apply within the specified ambient temperature and supply voltage unless otherwise stated.
Frequency = 85.38MHz
Value
Characteristic
Units
Min
Typ
50
54
Conditions
Max
FM AGC
Max Voltage Gain to demodulator
output
Min Voltage Gain to demodulator output
Max Voltage Gain to IF buffer output
-49
49
Min Voltage Gain to IF buffer output
AGC control Max
-42
56
-48
-40
2.6
AGC control Min
0.1
Gain slope
40
dB
To demodulator
outputs
dB
To demodulator
dB
IF AGC only mode
dB
IF AGC only mode
V
Gain = Gain max
V
Gain = Gain min
dB/V
Gain slope linearity
6
80
dB/V
Gain temperature stability
-2
2
dB
For any gain setting
6
dB
850Ωsource
NFGainmax
Input V1dBGainmin
IIP3Gainmax
98
105
dBµV
Minimum gain
-17
-14
dBm
Power (850Ω)
65
dBµV
Max Gain
-54
dBm
Power (850Ω)
Input Impedance
IF Frequency
Over gain control
range
Ω
850
With addition of
external resistor
across IF inputs
50
250
MHz
100
500
MHz
Note 2
100
400
MHz
Note 3
-98
dBc/Hz
@30kHz, Hiband
mode
Minimum tank Q=15
Note 1
-130
dBc/Hz
@>3MHz, Note 1
VHF Local Oscillator
Quaderature generation
VCO Frequency
VCO Phase noise
-100
VCO Noise floor
VCO buffer output
VCO buffer output impedance
350
mV
100
Ω
pk-pk single ended
Differential
Table 5 - Electrical Characteristics (DC specifications) - Continued
Notes:
1. Phase noise is specified at the LO Input to the mixers.
2. Total divide ratio to prescaler output is 8.
3. Total divide ratio to prescaler ouput is 4. The prescaler output is limited to 100MHz max.
7
MGCR01
Tamb= 30°C to +70°C, VCC = +2.7 to +3.6. These characteristics are guaranteed by either production test or
design. They apply within the specified ambient temperature and supply voltage unless otherwise stated.
Value
Characteristic
Units
Min
Typ
Demodulator Ouput
I OUT, I OUTB,
Q OUT, Q OUTB
I/Q Gain matching
0.1
0.25
dB
I/Q Phase matching
0.5
2
deg
4
5
kΩ
Output impedance
3
Baseband Bandwidth
Output IP3
Conditions
Max
117
50
MHz
119
dBµV
Baseband differential DC offset
3.5
Differential
Defined by on-chip
first order low-pass
filter
mV
Overload Detect
Referred to
baseband outputs
CDMA
104
dBµV
FM Mode
106
dBµV
Table 5 - Electrical Characteristics (DC specifications) - Continued
8
MGCR01
Additional Information
Typical Performance Characteristics
60
40
Gain (dB)
20
T = -30 deg C
T = 25 deg C
T= 70 deg C
0
-20
-40
-60
0.00
0.50
1.00
1.50
2.00
2.50
3.00
AGC Control Voltage (V)
Figure 3 - CDMA Gain v AGC Voltage
60
40
Gain (dB)
20
T = -30 deg C
T = 25 deg C
T= 70 deg C
0
-20
-40
-60
0.00
0.50
1.00
1.50
2.00
2.50
3.00
AGC Control Voltage (V)
Figure 4 - FM Gain v AGC Voltage
9
MGCR01
60
40
Gain (dB)
20
VCC = 2.7
VCC = 3
VCC = 3.6
0
-20
-40
-60
0.00
0.50
1.00
1.50
2.00
2.50
3.00
AGC Control Voltage (V)
Figure 5 - CDMA Gain v AGC Voltage
60
40
Gain (dB)
20
VCC = 2.7
VCC = 3
VCC = 3.6
0
-20
-40
-60
0
0.5
1
1.5
2
2.5
3
AGC Control Voltage (V)
Figure 6 - FM Gain v AGC Voltage
10
For more information about all Zarlink products
visit our Web Site at
www.zarlink.com
Information relating to products and services furnished herein by Zarlink Semiconductor Inc. or its subsidiaries (collectively “Zarlink”) is believed to be reliable.
However, Zarlink assumes no liability for errors that may appear in this publication, or for liability otherwise arising from the application or use of any such
information, product or service or for any infringement of patents or other intellectual property rights owned by third parties which may result from such application or
use. Neither the supply of such information or purchase of product or service conveys any license, either express or implied, under patents or other intellectual
property rights owned by Zarlink or licensed from third parties by Zarlink, whatsoever. Purchasers of products are also hereby notified that the use of product in
certain ways or in combination with Zarlink, or non-Zarlink furnished goods or services may infringe patents or other intellectual property rights owned by Zarlink.
This publication is issued to provide information only and (unless agreed by Zarlink in writing) may not be used, applied or reproduced for any purpose nor form part
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
significant injury or death to the user. All products and materials are sold and services provided subject to Zarlink’s conditions of sale which are available on request.
Purchase of Zarlink’s I2C components conveys a licence under the Philips I2C Patent rights to use these components in and I2C System, provided that the system
conforms to the I2C Standard Specification as defined by Philips.
Zarlink, ZL and the Zarlink Semiconductor logo are trademarks of Zarlink Semiconductor Inc.
Copyright Zarlink Semiconductor Inc. All Rights Reserved.
TECHNICAL DOCUMENTATION - NOT FOR RESALE