ATMEL TO353

Features
•
•
•
•
•
•
AMPS/Cell Band and PCS Band CDMA/GPS Operation
Low-current Consumption
Excellent Noise and IP3 Performance
Adjustable Third Order intercept on LNA Stage
Flexible IF Frequency Range from 80 MHz to 230 MHz
Divide by 2 Prescaler
Benefits
• Very Small 32-pin 5 mm x 5 mm Package
• Few External Components
• Fully ESD Protected
Applications
• Quad-mode/Tri-band CDMA IS-95/98-based Mobile Phones with GPS Support
Electrostatic sensitive device.
Observe precautions for handling.
Description
The T0353 is a CDMA front-end receiver RFIC designed for Tri-band, quad-mode
operation. The device supports AMPS, Cell CDMA, PCS CDMA, and A-GPS operation. The IF range is from 80 MHz to 230 MHz with external tuning. The low-noise
amplifiers have an adjustable third order intercept point (IP3) to minimize inter-modulation and cross-modulation effects. The mixers are designed for differential IF outputs
(single-ended or differential IF outputs for AMPS and GPS modes), and they feature
excellent linearity and low-noise figure.
2.8 V Tri-band/
Quad-mode RF
Receiver for
CDMA/AMPS/
GPS
T0353
Preliminary
(Summary)
The T0353 also integrates a divide-by-2 frequency divider to allow the use of only one
VCO module for both CDMA bands. However, it also has the option of connecting the
LO directly to the cellular mixer LO input. This device is available in a 5 mm x 5 mm
MLF package with 32 pins. The T0353 front-end receiver is capable of meeting all
electrical requirements in accordance with the TIA/EIA 98-C wireless communication
standard.
Rev. 4559AS–CDMA–10/02
1
10
PLNA_GND
GLO_IN
P_CLO_IN
Vcc LO TX
LO/2
L_IN
Band_SEL
Gain
BUFFEN
Vcc_Dig
CLNA_IN
Mix Vcc
GPS_Mix IN
PM_In
32
24
2
23
1
CDMA_Out+
CDMA_Out-
12
11
15
14
/2
17
PCS LO Out
Cell LO Out
13
30
29
4
25
21
28
20
AMPS IF+
AMPS IF-
7
Iset_Cell
9
2
GPS_MIX_Out+
GPS_MIX_Out-
6
5
26
CM IN
PLNA_IN
22
19
18
3
CLNA OUT
Iset_PCS
16
Control
Vcc LNA
31 27
8
CLNA GND
GPS_LNA_IN
PLNA OUT
GPS_LNA OUT
Figure 1. Block Diagram
T0353
4559AS–CDMA–10/02
T0353
Pin Configuration
Isset_PCS
PLNA_OUT
LIN
Band_SEL
VCC_DIG
PM_IN
CM_IN
BUFFEN
Figure 2. Pinning
1
2
3
4
5
6
7
8
32 31 30 29 28 27 26 25
24
23
22
21
20
19
18
17
9 10 11 12 13 14 15 16
CDMA_OUT+
CDMA_OUTVCC_MIX
AMPS_OUT+
AMPS_OUTGPSMix_OUT+
GPSMix_OUTVCC_LO_TX
Iset_Cell
GPS_LNA_OUT
P_CLO_IN
GLO_IN
LO/2
PLO_OUT
CLO_OUT
GPSMix_IN
PLNA_GND
PLNA_IN
VCC_LNA
Gain
CLNA_OUT
CLNA_GND
CLNA_IN
GPS_LNA_IN
Pin Description
Pin
Symbol
Function
1
PLNA_GND
PCS LNA emitter-ground. The LNA emitter ground should be grounded immediately to the groundplane to reduce stray inductance and capacitance that may affect performance.
2
PLNA_IN
PCS LNA input. Requires a DC blocking capacitor and an L-C (shunt C/series L) matching network
for optimum gain, intercept and noise performance.
3
Vcc_LNA
Power supply pin for PCS and Cell LNAs. Bypass with a capacitor as close to the pin as possible.
4
Gain
5
CLNA_OUT
Cell LNA output. Requires a pull-up inductor to VCC and a series DC blocking capacitor, which can
be used as part of the output matching network.
6
CLNA_GND
Cell LNA emitter-ground. The LNA emitter ground should be grounded immediately to the groundplane to reduce stray inductance and capacitance that may affect performance.
7
CLNA_IN
Cell LNA input. Requires a DC blocking capacitor and an L-C (shunt C/series L) matching network
for optimum gain, intercept and noise performance.
8
GPS_LNA_IN
GPS LNA input. Requires a DC blocking capacitor and an L-C (shunt C/series L) matching network
for optimum gain, intercept and noise performance.
9
Iset_CELL
10
GPS_LNA_OUT
11
P_CLO_IN
12
GLO_IN
13
LO / 2
14
PLO_OUT
Gain select logic input for cellular band. Logic high selects High Gain.
Bias resistor for Cell LNA. For typical bias use a 390 W resistor to ground which sets the bias
current for HGHL mode.
GPS LNA output.
PCS and Cell band LO input.
GPS LO input.
LO divider-select input. Low disables divider. High selects divider in cellular and AMPS modes.
PCS LO buffer output. Internally matched to 100 W. Does not require a blocking capacitor.
3
4559AS–CDMA–10/02
Pin Description (Continued)
Pin
Symbol
Function
15
CLO_OUT
16
GPSMix_IN
GPS mixer input.
17
Vcc_LO_Tx
Supply voltage for LO buffers.
18
GPSMix_OUT-
Negative GPS IF output.
19
GPSMix_OUT+
Positive GPS IF output.
20
AMPS_OUT-
21
AMPS_OUT+
22
Vcc_Mix
23
CDMA_OUT-
Negative CDMA IF output.
24
CDMA_OUT+
Positive CDMA IF output.
25
BUFFEN
26
CM_IN
Cell RF input to Cell CDMA mixer and Cell AMPS mixer.
27
PM_IN
PCS mixer RF input.
Cellular LO buffer output. Internally matched to 100 W. Does not require a blocking capacitor.
Negative AMPS IF output.
Positive AMPS IF output.
Supply voltage for all mixers.
LO output buffer enable. Set BUFFEN pin HIGH to power up the LO buffer output corresponding to
the selected band.
28
Vcc_DIG
29
Band_SEL
Supply voltage for logic control circuits.
30
LIN
31
PLNA_OUT
32
Iset_PCS
–
Paddle
Logic input for band select. Logic LOW selects PCS or GPS. Logic HIGH selects cellular (AMPS).
Logic input for high or low linearity. Logic HIGH selects High linearity.
PCS LNA output. Requires a pull-up inductor to VCC and a series blocking capacitor, which can be
used as part of the output matching network.
Bias resistor for PCS LNA. For typical bias use a 560 W resistor to ground which sets the bias
current for HGHL mode.
Device ground and heat sink, requires good thermal path; RF reference plane.
Operation
The various operating modes are controlled by the logic inputs Band_SEL, Gain, LIN,
LO/2 and BUFFEN. Table 1 shows the pin settings for the various operating modes.
Table 1. Mode Programming Truth Table (Continued)
Logic Inputs (1)
Mode
Condition
Shut down
PCS mode
Cellular mode
GPS mode
Note:
4
Band SEL
Gain
LIN
LO/2
BUFFEN
All circuits off
Low
Low
Low
X
X
High-gain, high-linearity
Low
High
High
X
X
High-gain, low-linearity
Low
High
Low
X
X
Activate PCS LO output buffer
Low
X
X
X
High
High-gain, high-linearity
High
High
High
X
X
High-gain, low-linearity
High
High
Low
X
X
Low-gain
High
Low
High
X
X
AMPS mode
High
Low
Low
X
X
LO/2 On
High
X
X
High
X
Activate Cell LO output buffer
High
X
X
X
High
Low
Low
High
X
X
1. The symbol X (“do not care”) means a logic input does not affect an operating mode.
T0353
4559AS–CDMA–10/02
T0353
Absolute Maximum Ratings
Parameters
Symbol
Value
Unit
VCC
-0.5 to +4.0
V
VCTRL
-0.5 to +4.0
V
ICC
50.0
mA
PLO ; CLO; CLNA_IN;
PLNA_IN; GPSLNA_IN;
+5.0
dBm
TSTG
-55 to +150
°C
TC
-40 to +100
°C
Symbol
Value
Unit
RthJA
TBD
K/W
Supply voltages, no RF applied
Logic control voltages
Supply current
RF and LO input signals
Storage temperature
Operating case temperature
Thermal Resistance
Parameters
Junction ambient
DC Supply Characteristics
Test conditions: Unless otherwise noted, the following conditions apply to typical performance specification under static
conditions (no RF applied): Vcc = +2.75 V, TA = 25°C.
No.
Parameters
Test Conditions
Pin
Symbol
Min.
Typ.
Max.
Unit
Supply voltage
2.7
2.75
3.3
V
Control voltage High
1.7
Type*
All Modes
V
Control voltage Low
0.5
LO divider supply
current
I_CC LO/2 = High I_CC LO/2 = Low
Cell LO Tx buffer
current
BUFFEN = High
PCS LO Tx buffer
current
BUFFEN = High
Logic-High current
Power-down supply
current
1.7
mA
6.0
mA
8.5
mA
100
Logic-Low current
-5.0
Band_SEL, Gain, LIN
= Low
V
µA
µA
10
µA
*) Type means: A =100% tested, B = 100% correlation tested, C = Characterized on samples, D = Design parameter
5
4559AS–CDMA–10/02
AC Electrical Characteristics
Test conditions: Unless otherwise noted, the following conditions apply to typical performance specification under static
conditions: VCC = +2.75 V, TA = 25°C, all RF inputs and outputs with a return loss of 10 dB minimum
No.
Parameters
Test Conditions
Pin
Symbol
Min.
Typ.
Max.
Unit
Cellular band
869
881.5
894
MHz
PCS band
1930
1960
1990
MHz
Type*
General Performance
Operating frequency
range
A-GPS Band
LO frequency range
Cellular band
(LO/2 is Low):
IF = 184 MHz
1575.42
MHz
685
710
MHz
1053
1078
MHz
Cellular band
(LO/2 is High):
IF = 184 MHz
1370
1420
MHz
2106
2156
MHz
PCS band:
IF = 184 MHz
1746
1806
MHz
2114
2174
MHz
GPS band:
IF = 183.6 MHz
1759.02
MHz
1391.82
MHz
IF frequency range
Cellular, PCS and
GPS bands
80
183.6
230
MHz
LO input power level
Cellular, PCS and
GPS bands
-10
-5
0
dBm
LO Tx buffer output
power level
Cellularband, not
matched at
dedicated
frequency
-8
-5.5
dBm
-8
-3
dBm
*) Type means: A =100% tested, B = 100% correlation tested, C = Characterized on samples, D = Design parameter
6
T0353
4559AS–CDMA–10/02
T0353
Cascade RF Electrical Characteristics (Cellular Band)
Test conditions: Unless otherwise noted, the following conditions apply to typical performance specification under static
conditions: VCC = +2.75 V, TA = 25°C, RF = 881.5 MHz, LO = 2130 MHz, IF = 183.6 MHz, LO input = -5.0 dBm, RF input =
-35 dBm (High-gain mode), LO/2 = Low, In case of activated LO/2 divider the current consumption increases by 2 mA. In a
cascaded configuration Gain and IP3 values are also influenced by the SAW filter. No correction has been made for filter
loss (1.6 dB) and interstage board trace losses.
No.
Parameters
Test Conditions
Pin
Symbol
Min.
Typ.
Max.
Unit
Type*
Combined LNA and Mixer Performance, CDMA Modulation
High-Gain High-Linearity Mode (HGHL)
Gain
Noise figure
Input IP3
Band_SEL = High;
Gain = High; LIN =
High
Supply current
G
26
dB
NF
2.1
dB
IIP3
-3.9
dBm
ICC
30
mA
G
25
dB
High-Gain Low-Linearity Mode (HGLL Paging Mode)
Gain
Noise figure
Input IP3
Band_SEL = High;
Gain = High; LIN =
Low
Supply current
NF
2.1
dB
IIP3
-7.2
dBm
ICC
23
mA
Low-Gain Mode (LG)
Gain
Noise figure
Input IP3
Band_SEL = High;
Gain = Low; LIN =
Low
Supply current
G
8.5
dB
NF
12.0
dB
IIP3
14
dBm
Icc
28.5
mA
Combined LNA and Mixer Performance, AMPS Modulation
Gain
Noise figure
Input IP3
Supply current
Band_SEL = High;
Gain = Low; LIN =
Low
G
24
dB
NF
2.5
dB
IIP3
-10
dBm
Icc
23
mA
*) Type means: A = 100% tested, B = 100% correlation tested, C = Characterized on samples, D = Design parameter
7
4559AS–CDMA–10/02
Cascade RF Electrical Characteristics (PCS Band)
Test conditions: Unless otherwise noted, the following conditions apply to typical performance specification under static
conditions: VCC = +2.75 V, TA = 25°C, RF = 1960 MHz, LO = 2143.6 MHz, IF = 183.6 MHz, LO input = -5.0 dBm, RF input
= -30 dBm (High-gain mode). In a cascaded configuration Gain and IP3 values are also influenced by the SAW filter. No
correction has been made for filter loss (2.4 dB) and interstage board trace losses.
No.
Parameters
Test Conditions
Pin
Symbol
Min.
Typ.
Max.
Unit
Type*
Combined LNA and Mixer Performance (CDMA Modulation)
High-Gain High-Linearity Mode (HGHL)
Gain
Noise figure
Input IP3
Band_SEL = Low;
Gain = High; LIN =
High
Supply current
G
26
dB
NF
2.4
dB
IIP3
-3.9
dBm
Icc
30
mA
G
25
dB
High-Gain Low-Linearity Mode (HGLL Paging mode)
Gain
Noise figure
Input IP3
Band_SEL = Low;
Gain = High; LIN =
Low
Supply current
NF
2.5
dB
IIP3
-6.7
dBm
Icc
24
mA
*) Type means: A = 100% tested, B = 100% correlation tested, C = Characterized on samples, D = Design parameter
Cascade RF Electrical Characteristics (GPS Band)
Test conditions: Unless otherwise noted, the following conditions apply to typical performance specification under static
conditions: VCC = +2.75 V, TA = 25°C, RF = 1960 MHz, LO = 2143.6 MHz, IF = 183.6 MHz, LO input = -5.0 dBm, RF input
= -30 dBm (High-gain mode). In a cascaded configuration Gain and IP3 values are also influenced by the SAW filter. No
correction has been made for filter loss (1.7 dB) and interstage board trace losses.
No.
Parameters
Test Conditions
Pin
Symbol
Min.
Typ.
Max.
Unit
Type*
Combined LNA and Mixer Performance
Gain
Noise figure
Input IP3
Supply current
Band_SEL = Low;
Gain = Low; LIN =
High
G
33
dB
NF
1.8
dB
IIP3
-15
dBm
Icc
23.5
mA
*) Type means: A = 100% tested, B = 100% correlation tested, C = Characterized on samples, D = Design parameter
8
T0353
4559AS–CDMA–10/02
T0353
Typical Electrical Characteristics LNA and Mixer Separately (Cellular Band)
Test conditions: Unless otherwise noted, the following conditions apply to typical performance specification under static
conditions: VCC = +2.75 V, TA = 25°C, RF = 881.5 MHz, LO = 2130.82 MHz, IF = 183.6 MHz, LO input = -5.0 dBm, RF input
= -25 dBm (High-gain mode).
No.
Parameters
Test Conditions
Gain (dB)
NF (dB)
IIP3 (dBm)
16
1.5
11.5
12
7.0
11.5
Type*
Cell Band, High-Gain High-Linearity Mode (HGHL); CDMA Modulation
Cell LNA
Cell mixer
Band_SEL = High; Gain = High;
LIN = High
Cell Band, High-Gain Low-Linearity Mode (HGLL); CDMA Modulation
Cell LNA
Cell mixer
Band_SEL = High; Gain = High;
LIN = Low
15
1.6
8.5
11.5
6.8
7.5
-2.2
4.0
24.0
12
7.0
11.5
15
1.6
8.5
10
9.0
4
Cell Band, Low-Gain Mode (LG); CDMA Modulation
Cell LNA
Cell mixer
Band_SEL = High; Gain = Low;
LIN = High
Cell Band, AMPS Modulation
Cell LNA
Cell mixer
Band_SEL = High; Gain = Low;
LIN = Low
*) Type means: A = 100% tested, B = 100% correlation tested, C = Characterized on samples, D = Design parameter
Typical Electrical Characteristics LNA and Mixer Separately (PCS Band)
Test conditions: Unless otherwise noted, the following conditions apply to typical performance specification under static
conditions: VCC = +2.75 V, TA = 25°C, RF = 1960 MHz, LO = 2143.6 MHz, IF = 183.6 MHz, LO input = -5.0 dBm, RF input
= -25 dBm (High-gain mode).
No.
Parameters
Test Conditions
Gain (dB)
NF (dB)
IIP3 (dBm)
15
1.6
9.0
13
6.7
10.5
15
1.6
6.5
13
6.0
5.5
Type*
PCS Band, High-Gain High-Linearity Mode (HGHL); CDMA Modulation
PCS LNA
PCS mixer
Band_SEL = Low; Gain = High;
LIN = High
PCS Band, High-Gain Low-Linearity Mode (HGLL); CDMA Modulation
PCS LNA
PCS mixer
Band_SEL = Low; Gain = High;
LIN = Low
*) Type means: A = 100% tested, B = 100% correlation tested, C = Characterized on samples, D = Design paramete
9
4559AS–CDMA–10/02
Typical Electrical Characteristics LNA and Mixer Separately (GPS Band)
Test conditions: Unless otherwise noted, the following conditions apply to typical performance specification under static
conditions: VCC = +2.75 V, TA = 25°C, RF = 1575.42 MHz, LO = 1391.82 MHz, IF = 183.6 MHz, LO input = -5.0 dBm, RF
input = -35 dBm (High-gain mode).
No.
Parameters
Test Conditions
Gain (dB)
NF (dB)
IIP3 (dBm)
19.5
1.5
-4.0
16
7.9
-1
Type*
A-GPS Mode
Cell LNA
Cell mixer
Band_SEL = Low; Gain = Low;
LIN = Low
*) Type means: A = 100% tested, B = 100% correlation tested, C = Characterized on samples, D = Design parameter
Ordering Information
Extended Type Number
T0353
Package
HP-VFQFP-N32
Remarks
TBD
Package Information
Note: GND solder mask opening is not centered on the package.
10
T0353
4559AS–CDMA–10/02
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© Atmel Corporation 2002.
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Printed on recycled paper.
4559AS–CDMA–10/02
xM