QP1T [MITEL]
CDMA/AMPS dual Band IF Receiver for Digital Phones; CDMA / AMPS双波段中频接收机用于数字电话
| 型号： | QP1T |
| 厂家： | 
MITEL NETWORKS CORPORATION |
| 描述： | CDMA/AMPS dual Band IF Receiver for Digital Phones |
| 文件： | 总9页 (文件大小：117K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
P
SATURN
CDMA/AMPS dual Band IF Receiver for Digital Phones
Preliminary Information
DS4721
Issue 4.2
April 1999
Features
Odering Information
● Selectable IF input buffers with characteristic
impedance suitable for interface to IF CDMA and
FM SAW filter outputs
SATURN/KG/QP1S
SATURN/KG/QP1T
● AGC amplifiers with 90dB of variable gain, fully
compensated for temperature variation
Description
● IQ demodulator with accurately defined output DC
level and low DC offsets
TheSATURNcircuitisdesignedforuseindualbanddual
mode mobile phones (CDMA/AMPS). The circuit is
designed to be compataible with digital baseband and
mixed signal circuit chips from Mitel (Planet Chip-set)
and Qualcomm (MSM2 and BBA). A wideband AGC
amplifier allows the input of CDMA or AMPS signal paths
with a range power management control options.
● LO operating at twice frequency with high accuracy
quadrature generation
● Sophisticated power management control operation
● Overload indicator
FM IFIN
I OUT
CDMA IFIN
Q OU T
Gain
Control
Temperature
Comp.
AGC
DLL
BAND 1900
PRESCALER
Overload
Indicator
STARTUP
ENABLE
Mode
Control
VHF VCC
VHF VEE
MODE CDM
Figure 1 Block diagram
SATURN
Preliminary Information
IF VCC
IF OUTB
IF OUT
VHF VCC
I OUTB
I OUT
IF VEE
VHF VEE
GND
OVERLOAD DET
VHF RES
VHF RESB
BAND 1900
VHF BUF
VHF BUFB
GND
CDMA IFIN
CDMA IFINB
FM IFIN
FM IFINB
AGC
AGCB
MODE CDMA
ENABLE
GND
Q OUT
Q OUTB
STARTUP
QSOP28
Figure 2 Pin Connections
Pin Description
Pin No
Pin Name
Description
1
2
3
IF VCC
IF OUTB
IF OUT
Supply for IF inputs and AGC blocks
Post AGC IF output
Post AGC IF output
4
5
IF VEE
GND
Ground for IF inputs and AGC blocks
Substrate ground
6
7
8
CDMA IFIN
CDMA IFINB
FM IFIN
Post SAW IF input (CDMA)
Post SAW IN input (CDMA)
Post SAW IF input (FM)
9
FM IFINB
AGC
Post SAW IF inputs (FM) (AC ground)
AGC Control for IF section
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
AGCB
AGC control for IF sections (AC ground)
CDMA/FM mode select
Power up AGC sections of device
Substrate Ground
Power up Oscillator, DLL and Mixer sections of the device
Q channel baseband output
Q Channel baseband output
Ground
VHF oscillator buffered output for synthesiser
VHF oscillator buffered output for synthesiser
VHF oscillator tuning band select input
VHF VCO resonator
VHF VCO resonator
Overload detector output
Ground for VHF VCO and DLL blocks
I channel baseband output
I channel baseband output
MODE CDMA
ENABLE
GND
STARTUP
QOUTB
OUT
GND
VHF BUFB
VHF BUF
BAND 1900
VHF RESB
VHF RES
OVERLOAD DET
VHF VEE
I OUT
I OUTB
VHF VCC
Supply for VHF and DLL blocks
2
Preliminary Information
SATURN
Electrical Characteristics (Mode Control)
Description
ENAVLE STARTUP MODE CDMA BAND 1900
Conditions
Standby Mode
0
0
0
0
1
1
X
X
X
X
1
0
All circuits powered down
except logic inputs
Start up Mode
For high band IF
(210.38MHz)
For low band IF (85.38MHz)
Turns on VCO circuits, DLL
quadrature generation,
prescaler and IQ
demodulator. All other
circuits remain powered
down
CDMA mode
1
1
1
1
1
1
1
0
For high band IF
(210.38MHz)
For low band IF (85.38MHz)
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
1
0
0
1
1
Note 4
CDMA IF AGC
only mode
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.
X = Don’t Care
Notes
1.
2.
3.
4
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.
In high band mode (Band 1900 = 1) the VCO operates at twice the IF frequency. For example if IF = 210.38MHz then the
oscillatoroperatesat420.76MHz. Adelaylockedloop(DLL)circuitthengeneratesthequadratureLOsignals. Theprescaler
output, VHFBUF, is VCO frequency divided by 8 (52.494MHz).
In low band mode (Band 1900 = 0) the VCO operates at 4 times the IF frequency. for example if IF = 85.38MHz the oscillator
operatesat341.52MHz. ThisisthendividedandusesDLLcircuittoprovidethequadratureLOsignals. Theprescaleroutput,
VHFBUF, is VCO frequency divided by 8 (42.69MHz).
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. Prescaler output is LO frequency divided by four.
3
SATURN
Preliminary Information
Absolute Limits
Description
Min
Typ
Max
4.0
Units
Volts
°C
Comments
Supply Voltage
Operation temperature, Tamb
Storage temperature, Tstg
Junction temperature, Tj
Power dissipation
-30
-40
-30
+85
Ambient temperature
+125
+125
350
°C
°C
mW
Volts
Volts
kV
Maximum Pin Voltage
Minimum Pin Voltage
ESD voltage
Vcc+0.6
All pins except Vcc and GND
All pins except Vcc and GND
Human Body Model
-0.6
1.75
Electrical Characteristics (DC specifications)
T
=30°Cto+70°C, V =+2.7to+3.6. Thesecharacteristicsareguaranteedbyeitherproductiontestordesign.
amb cc
They apply within the specified ambient temperature and supply voltage unless otherwise stated.
Characteristic
Value
Units
Conditions
Min
Typ
Max
General
Supply Voltage
2.7
-30
3.0
27
3.6
85
V
All Vcc Pins
Operating temperature
Current Consumption
Standby Mode
°C
Ambient See note 1
0.03
8
0.1
13
23
23
13
18
mA
mA
mA
mA
mA
mA
Startup Mode
CDMA Mode
14
14
8
FM Mode
CDMA AGC only Mode
FM AGC only Mode
Mode Control Logic
CMOS input logiv high, VIH
CMOS input high current, IIH
CMOS input low current, IIL
Switching time between any two Modes
AGC Control
11
Vcc-0.5
-10
Vcc+0.1
10
V
All logic inputs
All logic inputs
All logic inputs
µA
µA
ms
V
-10
10
3
0.1
2.6
AGC Input impedance
DC Common Mode voltages
I OUT, I OUTB (CDMA Mode)
I OUTB, QOUTB
100
130
160
kΩ
Vcc-0.8 Vcc-0.6 Vcc-0.4
Vcc-0.8 Vcc-0.6 Vcc-0.4
V
V
I OUT< Q OUT (FM Mode)
I OUTB, Q OUTB
Note 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.
4
Preliminary Information
SATURN
Electrical Characteristics (AC specifications) Continued
T
=30°Cto+70°C, V =+2.7to+3.6. Thesecharacteristicsareguaranteedbyeitherproductiontestordesign.
amb
cc
They apply within the specified ambient temperature and supply voltage unless otherwise stated.
Frequency = 210.38MHz
Characteristic
Value
Units
Conditions
Min
48
Typ
Max
-47
CDMA AGC
Max Voltage Gain to demodulator
output
50
dB
dB
To demodulator outputs
To demodulator
Min Voltage Gain to demodulator
output
-55
Max Voltage Gain to IF buffer output
Min voltage Gain to IF buffer output
AGC control Max
42
-43
-51
dB
dB
V
IF AGC only mode
IF AGC only mode
Gain = Gain max
Gain = Gain min
-49
0.1
2.6
AGC control Min
V
Gain slope
40
dB/V
Gain slope linearity
Gain temperature stability
Channel gain variation
@ 210.38MHz
6
90
2
dB/V Over gain control range
dB
-2
-0.1
0.1
dB
Within channel bandwidth
NFGainmax
5.5
6.5
dB
Rs (500Ω)
Input V1dBGainmin
110
dBµV Minimum gain
dBµV Power (500Ω)
dBµV Minimum gain
104
114
IIP3Gainmin
120
500
Input impedance
Ω
With addition of external
resistor across IF inputs
IF Frequency
50
30
250
MHz
dB
CDMA to Amps isolation
5
SATURN
Preliminary Information
Electrical Characteristics (AC specifications) Continued
T
=30°Cto+70°C, V =+2.7to+3.6. Thesecharacteristicsareguaranteedbyeitherproductiontestordesign.
amb
cc
They apply within the specified ambient temperature and supply voltage unless otherwise stated.
Frequency = 85.38MHz
Characteristic
Value
Units
Conditions
Min
52
Typ
Max
-47
FM AGC
Max Voltage Gain to demodulator
output
54
dB
dB
To demodulator outputs
To demodulator
Min Voltage Gain to demodulator
output
-49
Max Voltage Gain to OF buffer output
Min voltage Gain to IF buffer output
AGC control Max
54
59
dB
dB
V
IF AGC only mode
IF AGC only mode
Gain = Gain max
Gain = Gain min
-48
-42
0.1
2.6
AGC control Min
V
Gain slope
40
dB/V
Gain slope linearity
Gain temperature stability
NFGainmax
6
80
2
dB/V Over gain control range
-2
dB
dB
For any gain setting
6
850Ω source
Input V1dBGainmin
98
105
113
850
dBµV Minimum gain
dBµV Minimum gain
IIP3Gainmin
103
Input Impedance
Ω
With addition of external
resistor across IF inputs
IF Frequency
50
250
MHz
VHF Local Oscillator
Quaderature generation
LO input Frequency
VCO Phase noise
100
500
-98
MHz
-100
dBc/Hz @30kHz, Hiband mode
Minimum tank Q=15 Note 1
dBc/Hz @>3MHz, Note 1
VCO Noise floor
-130
100
VCO buffer output
350
mV
pk-pk single ended
Differential
VCO buffer output impedance
Ω
Note 1: Phase noise is specified at the LO input to the mixers.
6
Preliminary Information
SATURN
Electrical Characteristics (AC specifications) Continued
T
=30°Cto+70°C, V =+2.7to+3.6. Thesecharacteristicsareguaranteedbyeitherproductiontestordesign.
amb cc
They apply within the specified ambient temperature and supply voltage unless otherwise stated.
Characteristic
Value
Units
Conditions
Min
Typ
Max
Demodulator Output
I OUT, I OUTB, Q OUT, Q OUTB
I/Q Gain matching
I/Q Phase matching
Output impedance
Baseband Bandwidth
0.1
0.5
4
0.25
2
dB
deg
kΩ
3
5
Differential
50
MHz
Defined by on-chip first order
low-pass filter
Output IP3
117
119
dBµV
Baseband differential DC offset
Overload Detect
CDMA Mode
3.5
mV
Referred to baseband outputs
104
106
dBµV
dBµV
FM Mode
7
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