Philips Semiconductors

Objective specification

SA9503

Dual-band, CDMA/AMPS LNA

and downconverter mixers

1999 Jul 29

5

MODE SELECT LOGIC AND DC CHARACTERISTICS

The SA9503 chip has several modes of operation for which the selection logic is defined in the following two tables. Different mode selections

require different portions of the circuit to be active. Modes from unlisted combinations of logic pins, are not valid. Total current consumption of

the device is the sum of the currents for the mixer portion (Table 2) and the LNA portion (Table 3).

Table 2.

Mode logic definition for Downconverter mixers

(Tx) LO

(Tx) LO

LOGIC INPUT PINS

CURRENT (mA)

MODES

(Tx) LO

BUFFER

()

BUFFER

OUTPUT

DOUBLER

POWER

PCS/CEL

CDMA/FM

LO DOUBLER

(Tx) LO

ENABLE

TYP

MAX

PCS

1

PCS1

On

2 GHz

Off

1

1

0

1

26

29.9

2

PCS1 Idle

Off

—

Off

1

1

0

0

16

18.4

3

PCS2

On

2 GHz

On

1

1

1

1

30

34.5

4

PCS2 Idle

Off

—

On

1

1

1

0

20

23

Cellular CDMA

5

CDMA

On

1 GHz

Off

1

0

1

1

23

26.5

6

CDMA Idle

Off

—

Off

1

0

1

0

13

15

7

FM

On

1 GHz

Off

1

0

0

1

16.8

19.3

8

FM Idle

Off

—

Off

1

0

0

0

6.8

7.8

Power Down

9

x

x

Off

0

x

x

x

1

µA

50

µA

NOTES:

x = Don’t care

1. The device will be in the Power Down mode (sleep) when control lines S0 = 1, S1 = 0, and S2 = 0.

Table 3.

Mode logic definition for LNA

MODES

LOGIC INPUTS

CURRENT CONSUMPTION (mA)

MODES

PCS/CEL

S0

S1

S2

TYP

MAX

1

CEL_L (High linearity)

0

1

1

1

13.2

15.0

2

CEL_1 (High gain)

0

0

1

1

4.9

6.0

3

CEL_2 (Next lower gain)

0

0

1

0

4.9

6.0

4

CEL_3 (Next lower gain)

0

0

0

1

4.9

6.0

5

CEL_4 (Next lower gain)

0

0

0

0

3.7

4.5

6

PCS_L (High linearity)

1

1

1

1

13.3

15.0

7

PCS_1 (High gain)

1

0

1

1

5.9

7.2

8

PCS_2 (Lower gain)

1

0

1

0

5.9

7.2

9

PCS_3 (Next lower gain)

1

0

0

1

5.9

7.2

10

PCS_4 (Next lower gain)

1

0

0

0

3.7

4.5

11

Mixers ON (LNA portion OFF)

x

1

1

0

1

µA

50

µA

12

Reserved (Sleep)

x

1

0

1

(Note 1)

(Note 1)

13

Sleep

x

1

0

0

(Note 1)

(Note 1)

NOTES:

x = Don’t care

1. The device will be in the Power Down mode (sleep) when control lines S0 = 1, S1 = 0, and S2 = 0.