PANASONIC AN6494NSA

AN6494NSA
Digital Communication Orthogonal Modulator IC
■ Overview
Unit : mm
The AN6494NSA is an orthogonal modulator IC for digital
cellular telephones. It incorporates a phase shifter and an APC
circuit for indirect modulation in the 1.5GHz band. It efficiently
prevents power from leaking to adjacent channels. When provided with an LC filter, it can efficiently suppress IF-band local
harmonic spurious.
5.00±0.20
1
0 —10˚
8
1.20±0.2
• Operating supply voltage range : 2.7V to 4.0V
• 1.5GHz indirect modulation
• LO1’s eighth-order harmonic suppression : –65dBc or better
• Output power level : –13dBm
• Variable range : APC = typ. 38dB (at fout=1.5GHz)
• Phase shifter frequency : 178MHz
• Package : SSOP016-P-0225A with 0.65mm pitch
0.65
0.50±0.20
0.10±0.10
0.22 +0.10
–0.05
(0.225)
+ 0.10
■ Features
(1.0)
0.15 – 0.05
4.40±0.20
9
6.40±0.30
16
SEATING PLANE
SEATING PLANE
SOP package with 16 pins (SSOP016-P-0225A)
■ Block Diagram
L02
PO
16
15
VAPC
14
13
12
11
10
9
6
7
8
NC
M
LPF
1
2
3
4
5
Q
Q
I
I
+
L01
VCC
■ Pin Descriptions
Pin No.
Description
Pin No.
Description
1
VCC (mod)
9
LO2R
2
Q input
10
LO2
3
Q input
11
APC/BS
4
I input
12
LC2
5
I input
13
NC
6
LC1
14
GND
7
LO1
15
RFoutput
8
GND
16
VCC (UP–MIX)
■ Absolute Maximum Ratings (Ta=25˚C)
Parameter
Symbol
Rating
Unit
Supply voltage
VCC
4.2
V
Supply current
ICC
60
mA
Power dissipation
PD
252 (Ta=80˚C)
mW
Operating ambient temperature
Topr
–30 to + 80
˚C
Storage temperature
Tstg
–55 to + 125
˚C
■ Recommended Operating Range
Parameter
Operating supply voltage range
Symbol
Range
VCC
2.7V to 4.0V
■ Electrical Characteristics (Ta=25±2˚C)
Parameter
Symbol
Output level (1)
PO1
Output level (2)
PO2
Current consumption
ICC
Sleep current
ISL
Minimum output level
Pmin
Condition
LO1=178MHz, –20dBm
LO2=1607MHz, –25dBm
VAPC=2.5V
LO1=178MHz, –20dBm
LO2=1631MHz, –25dBm
VAPC=2.5V
LO1=178MHz, –20dBm
LO2=1619MHz, –25dBm
VAPC=2.5V
LO1=178MHz, –20dBm
LO2=1619MHz, –25dBm
VAPC=0V
LO1=178MHz, –20dBm
LO2=1619MHz, –25dBm
VAPC=1.0V
Note) VCC=3.7V
IQ signal : 0.5VP–P (single phase), π/4 QPSK modulated
PO1 output frequency : 1428.0025MHz
PO2 output frequency : 1453.0025MHz
Pmin output frequency : 1441.0025MHz
min
typ
max
Unit
–16
–13
–10
dBm
–16
–13
–10
dBm
38
48
mA
0
10
µA
–52
–45
dBm
■ Electrical Characteristics (Design Values for Reference) (Ta=25±2˚C)
The following are design values for reference only (not guaranteed).
Parameter
Symbol
Carrier leak suppression (fLO2–fLO1) *1
CL
Image leak suppression *1
IL
Adjacent spurious suppression *1
DU
Base-band distortion suppression *1
BD
3rd intermodulation distortion suppression *2
(Po = –10dBm)
IM3
Adjacent channel power leak suppression
(50kHz separation) *3
BL1
Adjacent channel power leak suppression
(100 kHz separation) *3
BL2
APC variation range *1
LAPC
APC output level control sensitivity *1
SAPC
In-band output level deviation *1
∆P
Direct conversion modulation current
consumption *1
IMD
Up-mixer current consumption *
IUM
Condition
LO1=178MHz, –20dBm
LO2=1619MHz, –25dBm
VAPC=2.5V, IQ: VDC offset adjust
LO1=178MHz, –20dBm
LO2=1619MHz, –25dBm
VAPC=2.5V, IQ: VAC level adjust
LO1=178MHz, –20dBm
LO2=1619MHz, –25dBm
VAPC=2.5V
LO1=178MHz, –20dBm
LO2=1619MHz, –25dBm
VAPC=2.5V
LO1=178MHz, –20dBm
LO2=1619MHz, –25dBm
VAPC=2.5V
LO1=178MHz, –20dBm
LO2=1619MHz, –25dBm
VAPC=2.5V
LO1=178MHz, –20dBm
LO2=1619MHz, –25dBm
VAPC=2.5V
LO1=178MHz, –20dBm
LO2=1619MHz, –25dBm
VAPC=1.0 —2.5V
LO1=178MHz, –20dBm
LO2=1619MHz, –25dBm
VAPC=1.0 —2.5V
LO1=178MHz, –20dBm
Lo2=1607MHz—1631MHz,
–25dBm
VAPC=2.5V
LO1=178MHz, –20dBm
LO2=1619MHz, –25dBm
VAPC=2.5V
LO1=178MHz, –20dBm
LO2=1619MHz, –25dBm
VAPC=2.5V
Note) VCC= 3.7V
IQsignal : 0.5VP–P (single phase), 1.85VDC
*1 : π/4 QPSK modulation
*2 : 3π/4 QPSK modulation
*3 : PN9-stage modulation
APC output level sensitivity was measured with VAPC=1.0V and VAPC=1.6V.
■ Usage Note
Surge breakdown levels
The following are design values for reference only (not guaranteed).
Condition : C=200pF, and R=0Ω
Pin No.
Positive breakdown level (V)
Negative breakdown level (V)
2
90
60
3
90
50
4
70
60
5
80
70
11
80
70
12
170
—
min
30
typ
max
Unit
–35
–30
dBc
–40
–35
dBc
–70
–65
dBc
–40
dBc
–35
dBc
–60
dBc
–65
dBc
38
dB
47
dB/V
–1.5
+1.5
dB
17
22
mA
21
26
mA
■ Pin Descriptions
Pin No.
1
Symbol
VCC
I/O
Description
I
This is the supply voltage pin for the
direct conversion modulator. The IC
incorporates a band-gap regulator to
provide a regulated bias independent of
VCC or temperature change.
Equivalent circuit
I signal input. The relationship between
input DC bias and amplitude is as follows :
2
I
I
DC bias (V)
1.7— (VCC– 0.9)
Amplitude VP–P
0.5 (single phase)
Input impedance is 100kΩ or more.
3
I
I
1
2
Inverted-I signal input. Apply 1.5—
(VCC – 0.9) V for single-phase input mode.
Q signal input. The relationship between
input DC bias and amplitude is as follows :
4
Q
I
3
2kΩ
DC bias (V)
Amplitude VP–P
1.7— (VCC– 0.9)
0.5 (single phase)
1
Input impedance is 100kΩ or more.
4
5
Q
I
5
2kΩ
Inverted-Q signal input. Apply 1.5—
(VCC– 0.9)V for single-phase input mode.
External
6
LC1
An external LC connected to this pin
removes spurious from the transmission
band by raising up the Lo1 input frequency band. The output is an emitter
follower.
6
12
■ Pin Descriptions (cont.)
Pin No.
Symbol
I/O
Description
Equivalent circuit
1
10kΩ
7
Lo1
I
This is the local input to the orthogonal
modulator. The input impedance is
10kΩ.
6
340Ω
2pF
2pF
2pF
5pF
340Ω
2pF
8
GND
9
Lo2
REF
This is the ground for the orthogonal
modulator. The ground foil pattern for
this pin must be wide enough to provide
a low impedance.
I
This is a local input to the UP mixer.
An external balance coil should be used
to provide balanced input.
16
7kΩ
1kΩ
1kΩ
10
Lo2
I
This is a local input to the UP mixer.
An external balance coil should be used
to provide balanced input.
10
This is the battery save control for all
circuits. It also controls RF output power.
11
APC/BS
I
VAPC (V)
Status
0 — 0.5
OFF
1.0 —VCC
ON (APC control)
5pF 5pF
9
Regulator
10kΩ
3kΩ
11
10kΩ
(APC control)
The input impedance is 5kΩ or more.
External
12
LC2
An external LC connected to this pin
removes spurious from the transmission
band by raising up the Lo1 input frequency band. The output is an emitter
follower.
6
12
■ Pin Descriptions (cont.)
Pin No.
13
Symbol
Description
I/O
Equivalent circuit
NC
This is the ground for the UP mixer and
the output amplifier. The ground foil
pattern for this pin must be wide enough
to provide a low impedance for high frequencies.
GND
14
16
200Ω
RF
output
15
16
VCC
O
This is the RF output from the output
amplifier circuit (emitter follower).
I
This is the power supply for the UP
mixer and the output amplifier circuit.
It incorporates a regulating circuit to
provide a regulated bias independent of
VCC or temperature change.
APC Control Voltage Characteristics
VCC=3.0V
LO1=178MHZ, –20dBm
LO2=1619MHZ, –25dBm
IQ signal : 0.5Vp-p (single phase)
–10
–20
(T=
80˚C)
(T=
27˚C)
PO
(T= –30˚C)
–30
–40
IL
–50
–60
BL1
–70
BL2
–80
–50
–60
Circuit OFF
–70
DU
–80
0
1
2
APC Control Voltage (V)
3
Nearby Spurious Suppression (dBc)
Output Level (dBm) /Image Leak Suppression (dBc)
Adjacent Channel Leak Power Suppression (50kHz Separation) (dBc)
Adjacent Channel Leak Power Suppression (100kHz Separation) (dBc)
■ Characteristics Curve
200Ω
15