Philips sa9502 DATASHEETS

INTEGRATED CIRCUITS

SA9502

Dual-band, CDMA/AMPS
downconverter IC

Product specification
Supersedes data of 1998 Dec 10
IC17 Data Handbook




1999 Mar 19

Philips Semiconductors Product specification

SA9502Dual-band, CDMA/AMPS downconverter IC

DESCRIPTION

The SA9502 integrates all the front end receive mixers necessary
for use in dual-band, triple-mode CDMA/AMPS cellular phone
handsets. There are three individual mixer blocks, each optimised
for high linearity with low power consumption for operation in one of
the following modes: High-band 1900MHz PCS CDMA, low-band
800MHz cellular CDMA or analog FM AMPS/TACS modes.
Additionally, the entire circuit can be powered down and put into
sleep mode, reducing the supply current to typically 12 µA. The
circuit has been designed in our advanced QUBiC2 BiCMOS
process with 20GHz f

.

T

FEATURES

•PCS and cellular downconverter mixers typical performance:

– PCS: Gain=1 1.1dB, NF=8.4dB, IIP3= +1.8dBm
– CDMA: Gain=1 1.3dB, NF=9.4dB, IIP3= +5.7dBm
– FM: Gain= 7.5dB, NF=10.5dB, IIP3= +6.2dBm

•Separate, selectable IF outputs to suit FM and CDMA bandwiths

•PCS mixer LO: direct or via internal frequency doubler

•Switchable wideband LO output buffer

•Low voltage operation down to 2.7V

•Low current consumption in “idle”/receive modes:

– PCS : 14.3mA @ 2.7V
– CDMA: 17.6mA @ 2.7V
– FM: 6.8mA @ 2.7V

•Low standby current in sleep mode, typically 12 µA

•TSSOP20 package

APPLICA TIONS

•800MHz analog FM and CDMA digital receivers

•1900MHz PCS band CDMA digital recievers

•Supports dual-mode and triple-mode operation

•Digital mobile communications equipment

•Portable, low power radio equipment

ORDERING INFORMATION

EXTENDED

TYPE NUMBER

SA9502DH 20 TSSOP Plastic thin shrink small outline package; body 6.5 x 4.4 x 1.1 mm SOT360-1

PINS PIN POSITION MATERIAL CODE

PACKAGE

1999 Mar 19 853–2135 21064

2

Philips Semiconductors Product specification

SA9502Dual-band, CDMA/AMPS downconverter IC

BLOCK DIAGRAM

RX BPF
Fo = 1960 MHz
BW = 60 MHz

PCS_in

RX BPF
Fo = 881.5MHz
BW = 45 MHz

Cell_in

PCS LO

2

×2

2

1

1

1

CELLPCS

MODE

SELECT

LOGIC

CDMA/FM PCS/CELL LO OUT LO BUFFER

2

2

2

2

2

1

ENABLE

Figure 1. Block Diagram

1

CEL

LO IN

PCS

CELL

SA9502

BIAS

CTRL

V

CC

2

2

PWR ON/OFF

CDMA IF BPF
Fo = 85.38MHz
BW = 1.23MHz

CDMA_Out

FM_Out

FM IF BPF
Fo = 85.38MHz
BW = 30kHz

SR01718

Table 1. Mode Selection Summary

PCS/CEL (Pin 6) CDMA/FM/LO doubler (Pin 17) MODE

low low Cellular FM

low high Cellular CDMA
high low CDMA PCS, direct LO in
high high CDMA PCS, LO via frequency doubler

1999 Mar 19

3

Philips Semiconductors Product specification

SA9502Dual-band, CDMA/AMPS downconverter IC

PIN CONFIGURATION

1
2

FM IFB

3

GND

4

PCS RF

CEL RF

GND

V

5
6
7
8
9

CC

PCS RFB
PCS/CEL SEL
PWR ON/OFF

Figure 2. Pin Configuration

20FM IF
19
18
17
16
15
14
13
12
11

SR01760

CDMA IF
CDMA IFB
GND
CDMA/FM SEL
CEL LO IN
GND
PCS LO
LO BUFFER ENABLE
GND
LO OUT10

PIN DESCRIPTION

PIN SYMBOL DESCRIPTION

1 FM IF Non-inverting FM IF output
2 FM IFB Inverting FM IF output
3 GND Analog ground
4 PCS RF non-inverting PCS RF input
5 PCS RFB Inverting PCS RF input
6 PCS/CEL SEL PCS and cellular band select
7 PWR ON/OFF Power enable
8 CEL RF Cellular RF input
9 GND Ground

10 V

CC

11 LO OUT LO output to synthesizer
12 GND Ground
13 LO BUFFER

ENABLE
14 PCS LO PCS mixer direct LO input
15 GND Ground
16 CEL LO Cellular LO input
17 CDMA/FM SEL CDMA and FM mode select in cellular

18 GND Ground
19 CDMA IFB Inverting CDMA IF output
20 CDMA IF Non-inverting CDMA IF output

Power supply

Logic signal which switches the LO
buffer output ON or OFF

band; LO direct or via frequency
doubler in PCS mode

FUNCTIONAL DESCRIPTION
Mode Selection Logic

The SA9502 downconverter IC has several modes of operation for
which the selection logic is summarized in Table 1 and defined in
detail in Table 2. Different mode selections require different portions
of the circuit to be active. It should be noted that only the states
specified in Table 2 are valid selections for operation.

Local Oscillator Section

Local oscillator drive for the mixers is provided through single ended
inputs on either pin 16 (CEL LO) or pin 14 (PCS LO). The LO signal
has to be AC-coupled into the circuit and needs to be externally
matched. Inside the circuit, the cellular band LO signal is amplified
and buffered to drive: Either the cellular CDMA mixer or FM mixer
or the frequency doubler for the PCS mixer LO and additionally the
LO output buffer. The mode selection summary in Table 1 shows the
logic to apply to pins 6 and 17 to choose one of four possible
modes. The LO output buffer can be programmed on or off via LO
Buffer Enable (Pin 13). The LO output buffer’s frequency is the
same as that used by the mixers.

Cellular and PCS Mixers

The SA9502 has one single ended cellular band RF input which
feeds either the cellular CDMA mixer or the cellular FM mixer
circuits. Each mixer is optimized to meet cellular band CDMA or
analog FM requirements. The cellular FM mixer has its own
dedicated differential output on pins 1 and 2 which should to be
externally matched to the FM IF SAW filter . The cellular CDMA
mixer shares the same output pins with the CDMA PCS mixer.
Selection between these two mixers is via pin 6 (PCS/CEL) and as
the two mixers are never on at the same time, it allows a common
CDMA SAW filter to be used for both bands. The CDMA PCS mixer
has a differential RF input which should be used with an external
balun matching circuit. To avoid upsetting the internal biasing, the
RF inputs at both cellular and PCS band mixers should be
AC-coupled in. The CDMA and FM IF mixer outputs are of the open
collector type. So, they should be biased to the supply voltage V
with external tuning inductors which can also serve in the matching
of the IF SAW filter.

CC

1999 Mar 19

4

Philips Semiconductors Product specification

PARAMETER

TEST CONDITIONS

ÁÁÁÁ

UNITS

ÁÁÁÁ

ÁÁÁÁ

Logic i

ÁÁÁÁ

ÁÁÁÁ

ÁÁÁÁ

SA9502Dual-band, CDMA/AMPS downconverter IC

ABSOLUTE MAXIMUM RATINGS

PARAMETER

Supply voltage (VCC)
Logic input voltage
Maximum power input
Power dissipation, T

amb

=25°C
Maximum operating junction temperature
Storage temperature

RECOMMENDED OPERATING CONDITIONS

Supply voltage (VCC)

nput voltage range

Operating ambient temperature range (T
Operating junction temperature range

amb

)

LOW

HIGH

MIN.

2.7

–0.3

0.5V
–30

0

RATINGS

–0.3 to +6.0

–0.3 to VCC+0.3

–65 to +150

LIMITS

CC

+20
800
150

TYP.

3.0

MAX.

4.0

0.2V

CC

VCC+0.3

+85
105

UNITS

V
V

dBm

mW

°C
°C

V
V

V

°C
°C

MODE SELECT LOGIC AND DC CHARACTERISTICS

Table 2. Mode Logic Definition

VCC = 2.7 V to 4.0 V; T

MODE

MODE DESCRIPTION

1 PCS RxTx

(with doubled LO)

2 PCS Idle

(with doubled LO)

3 PCS RxTx

(with direct LO)

4 PCS Rx Idle

(with direct LO)
5 Cellular CDMA RxTx high high low high 23.2 mA 28.5 mA 7
6 Cellular CDMA Rx Idle low high low high 17.6 mA 21.0 mA 8
7 Cellular FM RxTx high high low low 1 1.9 mA 15.5 mA 9
8 Cellular FM Rx Idle low high low low 6.8 mA 7.8 mA 10
9 Sleep x low x x 12 µA 50 µA

NOTE:

x = Don’t care

= –30°C to +85°C, unless specified otherwise.

amb

LO
BUFFER
ENABLE

POWER
ON/OFF

high high high high 27.3 mA 33 mA 3

low high high high 18.4 mA 22 mA 4

high high high low 23.3 mA 28 mA 5

low high high low 14.3 mA 17 mA 6

PCS/CEL CDMA/FM

TYPICAL

CURRENT

CONSUMPTION

= 2.7 V

@ V

CC

MAXIMUM
CURRENT

CONSUMPTION

FIGURE

1999 Mar 19

5

Philips Semiconductors Product specification

PARAMETER

TEST CONDITIONS

UNITS

IF output load impedance

Conversion gain

Noise figure

j

j

SA9502Dual-band, CDMA/AMPS downconverter IC

AC ELECTRICAL CHARACTERISTICS

VCC = 2.7V; T

Cellular Band Downconverter

RF input frequency range 869 894 MHz
LO input frequency range 950 1030 MHz
IF output frequency range (CDMA) 50 300 MHz
IF output frequency range (FM) 50 300 MHz

Input IP3

RF input return loss ZS = 50Ω 11.0 dB
LO input return loss ZS = 50Ω 10.0 dB
LO output return loss ZS = 50Ω 8.0 dB
LO input power range –6.0 –3.0 0.0 dBm

LO output power range
LO (input and output) to RF leakage Single-ended in, single-ended out –34.5 –31.5 dBm

LO (output) to IF leakage (CDMA) Single-ended in, differential out –33.6 –29.0 dBm
LO (output) to IF leakage (FM) Single-ended in, differential out –20.0 –17.5 dBm
LO (input) to IF leakage (CDMA) Single-ended in, differential out –27.7 –26.5 dBm
LO (input) to IF leakage (FM) Single-ended in, differential out –18.5 –17.8 dBm
RF to LO (input) isolation Single-ended in, single-ended out 30 32.8 dB
RF to IF isolation (CDMA) Single-ended in, differential out 17 17.7 dB
RF to IF isolation (FM) Single-ended in, differential out 6 8.2 dB
LO output to LO input isolation Single-ended in, single-ended out 26.5 33 dB

Spurious response rejection
(CDMA mode)

Spurious response rejection
(FM mode)

= +25°C; Plo = –3 dBm, fIF = 85.40 MHz and measured on Philips demonstration board; unless specified otherwise.

amb

MIN. –3σ TYP. +3σ MAX.

p

p

CDMA, differential 1000 Ω
FM, single-ended, with ext. balun 850 Ω
CDMA 10.7 11.3 11.9 dB
FM 7.0 7.5 8.0 dB
CDMA mode, SSB 9.4 10.0 dB
FM mode, SSB 10.5 10.7 dB
CDMA mode, tone spacing = 900 kHz and

1.7 MHz
FM mode, tone spacing = 60 kHz 5.3 6.2 dBm

ZL = 50Ω, single LO out
with LO buffer on (Pin 13 = High)

With Tx band interferer at LO input port or
LO buffer output port of –40 dBm max and
with Pint = –31 dBm in Rx band.

With Tx band interferer at RF input port of
–40 dBm max and with Pint = –31 dBm in
Rx band.

With Tx band interferer at LO input port or
LO buffer output port of –40 dBm max and
with Pint = –31 dBm in Rx band.

With Tx band interferer at RF input port of
–40 dBm max and with Pint = –31 dBm in
Rx band.

4.8 5.7 dBm

–7.5 –5.0 –3.0 dBm

43 44 dB

59 61 dB

43 44 dB

55 56 dB

1999 Mar 19

6

Philips Semiconductors Product specification

PARAMETER

TEST CONDITIONS

UNITS

LO input frequency range

Input IP3

IF

,qy

1/2 IF supurious rejection
Spurious response rejection

in ut ort of –40 dBm max and

SA9502Dual-band, CDMA/AMPS downconverter IC

AC ELECTRICAL CHARACTERISTICS (continued)

VCC = 2.7V; T

PCS Downconverter

RF input frequency range 1810 1990 MHz

IF output frequency range 50 300 MHz
IF output load impedance Differential 1000 Ω
Conversion gain @ fIF, over RF/LO frequency ranges 10.5 11.1 11.7 dB
Noise figure @ fIF, over RF/LO frequency ranges, SSB 8.4 9.3 dB

p

RF input return loss ZS = 50Ω, with external balun 7.5 dB
LO input return loss ZS = 50Ω 10 dB
LO output return loss ZS = 50Ω, single LO out 8 dB
LO input power range –6 –3 0 dBm

LO output power range

LO (input and output) to RF leakage

LO (input and output) to IF leakage

RF to LO (input) isolation
RF to IF isolation Single-ended in, dif ferential out 32 40 dB
LO output to LO input isolation

p

= +25°C; Plo = –3 dBm, fIF = 85.40 MHz and measured on Philips demonstration board; unless specified otherwise.

amb

MIN –3σ TYP. +3σ MAX.

p

p

With doubler 860 1050 MHz
Direct PCS LO 1720 2200 MHz

@ fIF, over RF/LO frequency
ranges at 25°C @ VCC = 3.6V

ZL = 50Ω, single LO out with LO buffer on
(Pin 13 = High)

Single-ended in, single-ended out,
with and without doubler

Single-ended in, differential out,
with and without doubler

Single-ended in, single-ended out,
with and without doubler

Single-ended in, single-ended out,
with doubler

1/2 IF spur, fIF = 85.4 MHz/111.38 MHz,
with doubler, P

= –30 dBm at RF input.

int

1/2 IF spur, fIF = 85.4 MHz/111.38 MHz,
without doubler, P

= –30 dBm at RF input.

int

direct LO 0.5 1.8 dBm

doubled LO 0.1 1.2 dBm

–10.0 –8.5 –7 dBm

–56 –47 dBm

–43 –39 dBm

44 46 dB

30 31 dB

42 46 dB

68 76 dB

With Tx band interferer at LO input port or LO
buffer output port of –40 dBm max and with

= –21 dBm in Rx band.

P

p

int

With Tx band interferer at RF

p

p

with P

= –21 dBm in Rx band. doubled LO 53 61 dB

int

direct LO 59 64 dB

43 44 dB

1999 Mar 19

7

Philips Semiconductors Product specification

SA9502Dual-band, CDMA/AMPS downconverter IC

PERFORMANCE CHARACTERISTICS

DC Current Consumption

30.0

29.0

28.0

27.0

CURRENT (mA)

26.0

2.4 2.8 3.2 3.6 4.0 4.4
VCC (V)

SR01825

Figure 3. PCS RxTx (with doubled LO out) current

26.0

25.0

24.0

23.0

CURRENT (mA)

22.0

2.4 2.8 3.2 3.6 4 4.4
VCC (V)

Figure 5. PCS RxTx current

–30°C
+25°C
+85°C

–30°C
+25°C
+85°C

SR01827

20.0

19.0

18.0

CURRENT (mA)

17.0

2.4 2.8 3.2 3.6 4 4.4
VCC (V)

Figure 4. PCS Idle (with doubled LO out) current

16.0

15.0

14.0

CURRENT (mA)

13.0

2.4 2.8 3.2 3.6 4 4.4
(V)

V

CC

Figure 6. PCS Rx Idle current

–30°C
+25°C
+85°C

SR01826

–30°C
+25°C
+85°C

SR01828

26.0

25.0

24.0

23.0

CURRENT (mA)

22.0

21.0

2.4 2.8 3.2 3.6 4 4.4
VCC (V)

Figure 7. Cellular CDMA RxTx current

14.0

13.0

12.0

CURRENT (mA)

11.0

2.4 2.8 3.2 3.6 4 4.4
(V)

V

CC

Figure 9. Cellular FM RxTx current

–30°C
+25°C
+85°C

SR01829

–30°C
+25°C
+85°C

SR01831

20.0

19.0

18.0

17.0

CURRENT (mA)

16.0

2.4 2.8 3.2 3.6 4 4.4
VCC (V)

Figure 8. Cellular CDMA Rx Idle current

7.5

7.0

6.5

CURRENT (mA)

6.0

2.4 2.8 3.2 3.6 4 4.4
VCC (V)

Figure 10. Cellular FM Rx Idle current

–30°C
+25°C
+85°C

SR01830

–30°C
+25°C
+85°C

SR01832

1999 Mar 19

8