Philips SA1630 Datasheet

SA1630
IF quadrature transceiver
Product specification Supersedes data of 1998 Jul 21 IC17 Data Handbook
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2000 Oct 23
Philips Semiconductors Product specification
SA1630IF quadrature transceiver

DESCRIPTION

The SA1630 is a 70–400 MHz I/Q transceiver for wireless LAN. The Receive Path contains a digitally gain controlled linear IF amplifier, a pair of quadrature down conversion mixers and a pair of baseband amplifiers. The transmit path contains a pair of quadrature up conversion mixers that transposes a quadrature baseband input signal up to IF frequency. An external VCO signal is divided internally and provides quadrature local oscillator signals for the mixers. Another divider chain, reference divider and phase detector are provided to avoid the need for an external synthesizer. To keep power consumption to a minimum the transmit, receive and local oscillator functions can be powered down under digital control.

FEA TURES

Low supply voltage operation of 2.7 V for main chip and
2.9 V for charge pump.
Low current consumption: 33.5 mA in RX, 26.5 mA in TX, typical
at 3 V.
Flexible power up/down options.
Optional 2.5 V regulated reference voltage available during
transmit.
Input IF frequency range of 70–400 MHz.
BE Package
IF IN
IF INX
V
CC
GNDRX
V
CC
PLL_ON
Rx_ON
GNDHDR
GC0 GC1 GC2 GC3 GC4 GC5
GNDRx
Rx
1 2 3
Rx
4 5 6 7 8
9 10 11 12
13 14 15 16 17 18 19
GNDRxRxRx
GNDRXTxTx
45464748
Internal IF PLL for synthesizing the local IF oscillator signal.
Bandwidth of baseband Tx inputs is 20 MHz and that of baseband
Rx outputs is 8.5 MHz.
Designed for IEEE 802.11 wireless LAN using Direct Sequence
Spread Spectrum modulation.
Control registers power up in a default state.
Only a standard reference input frequency required, choice of 8,
11, 22 or 44 MHz.
Digital gain control of 70 dB in steps of 2 dB.
Rx Baseband amplifiers are capable of driving 1 kW ||15 pF
Rx Baseband o/p’s clamp symmetrically, above 1 Vp–p in order to
prevent dc bias shift under overdrive conditions.
Package: LQFP48, PCMCIA compatible

APPLICATIONS

IF circuitry for IEEE 802.11 DSSS wireless LAN.
Applications for high speed wireless data.
IFOUT
IFOUTX
424344
20 21 22 23 24
GNDTxRx
GNDTxRx
CC
V TxRx
394041 3738
REF
REF
V 2.5
I
36 35 34 33 32 31 30 29 28 27 26 25
GNDCP CP V CP
CC
DATA CLOCK STROBE LOCK LO_INX LO_IN GNDRx CLK IN CLK
INX
GND_BB
GND_BB
CC
V _BB
Q_RxOUT
I_Tx_IN
I_RXOUT
Q_Tx IN
I_Tx_INX
CC
Q_Tx INX
V _DIG
Tx_ON
GNDDIG
SR01549
Figure 1. Pin Configuration

ORDERING INFORMATION

DESCRIPTION TEMPERATURE RANGE ORDER CODE DWG #
48–Pin Plastic Low Profile Quad Flat package –40 to +85 °C SA1630BE SOT313–2
2000 Oct 23 853–2049 24857
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Philips Semiconductors Product specification
SA1630IF quadrature transceiver
(46)
(45)
(10) (11) (12)
(4)
PLL–ON
R
Tx
Tx
IFOUT
Tx
IFOUTX
LO IN
LO INX
XON
MODE
ON
CONTROL
÷
2
(5)
(23)
(43)
(42)
(7)
GC0
(8)
GC1
(9)
GC2
Rx
IFIN
Rx
IFINX
GC3 GC4 GC5
(28) (29)
(38)
2.5V REGULATOR
BUFFERS
V
2.5
REF
(1,3)
VCCR
(39)
VCCTXR
X
X
GND_BB
VCC_BB
I_Tx
IN
I_Tx
INX
Q_Tx
IN
Q_Tx
INX
I_Rx
Q_Rx
OUT
OUT
1
1
(13, 14)
(15)
(18) (19)
(20) (21)
(17)
(16)
(34)
(35)
(37)
(30)
(36)
V
CCCP
CP
I
REF
LOCK
GNDCP
CHARGE
8, 11, 22, 44
÷
CLK
IN
DAC
PUMP
N
÷
PHASE
DETECTOR
TEST REGISTER
INX
V
CCDIG
GND DIGCLK
Figure 2. Block Diagram
SYNTH
REGISTER
SERIAL
INPUT
DATA CLOCK STROBE
(2, 27, 44, 47, 48)(31)(32)(33)(24)(22)(25)(26)
GND RX
GND HDR
GNDTXR
(6)
X
(40, 41)
SR01551
2000 Oct 23
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Philips Semiconductors Product specification
SA1630IF quadrature transceiver

PIN DESCRIPTIONS

Pin No. Pin Name Description
1, 3 VCCRx Supply Pin for Rx section (IF circuits)
2, 27,
44,47,
13, 14 GND_BB Ground pin for Rx baseband circuits
40,41 GNDTxRx Ground pins used by Tx circuits
GNDRx Ground pins for Rx section (IF circuits)
48
4 PLL_ON One of the three digital CMOS logic control inputs to the mode control section 5 Rx_ON One of the three digital CMOS logic control inputs to the mode control section 6 GNDHDR Substrate ground 7 GCO Control bit 0 for IF VGA gain control, CMOS input 8 GC1 Control bit 1 for IF VGA gain control, CMOS input
9 GC2 Control bit 2 for IF VGA gain control, CMOS input 10 GC3 Control bit 3 for IF VGA gain control, CMOS input 11 GC4 Control bit 4 for IF VGA gain control, CMOS input 12 GC5 Control bit 5 for IF VGA gain control, CMOS input
15 VCC_BB Supply Pin for Rx Baseband circuits 16 Q_RXOUT Quadrature–phase Rx baseband output, single–ended 17 I_RxOUT In–phase Rx baseband output, single–ended 18 I_Tx IN In–phase differential Tx baseband input, positive 19 I_Tx INX In–phase dif ferential Tx baseband input, negative 20 Q_Tx IN Quadrature differential Tx baseband input, positive 21 Q_Tx INX Quadrature differential Tx baseband input, negative 22 VCC_DIG Supply for digital circuits 23 Tx_ON One of the Three digital CMOS logic control inputs to the mode control section 24 GNDDIG Digital ground 25 CLK INX Dif ferential reference input for synthesizer, negative 26 CLK IN Differential reference input for synthesizer, positive 28 LO_IN Differential LO input,positive 29 LO INX Differential LO input, negative 30 LOCK Test control output and synthesizer lock indicator 31 STROBE Serial bus strobe input 32 CLOCK Serial bus clock input 33 DATA Serial bus data input 34 VCCCP Supply for charge pump circuits 35 CP Charge pump output 36 GNDCP Ground for charge pump circuits 37 I
REF
38 V 39 VCCTxRx Supply pin used by Tx circuits
42 TxIFOUTX Differential transmitter IF output (open collector), positive 43 TxIFOUT Differential transmitter IF output (open collector), negative 45 RxIF INX Differential receiver IF input, negative 46 RxIF IN Differential receiver IF input, positive
2.5 Reference voltage of 2.5V available for external use
REF
Charge pump reference current
2000 Oct 23
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Philips Semiconductors Product specification
SA1630IF quadrature transceiver

ABSOLUTE MAXIMUM RATINGS

SYMBOL PARAMETER RATING UNITS
V
CCXX
V
IN
VG Any GND pin to any other GND pin 0 V
P
D
T
JMAX
P
MAX
T
stg

RECOMMENDED OPERATING CONDITIONS

SYMBOL PARAMETER RATING UNITS
V
CCXXXX
VCCCP Charge pump supply voltage 2.7 to 3.6 V
T
amb
NOTES:
1. There are no ESD protection diodes between pins 42, 43 and V reduced. Proper ESD handling precautions should be followed.

MODE CONTROL

NO: PLL_ON RX_ON TX_ON STATE DESCRIPTION MODE 2.5 V REF
1 0 X X SLEEP mode SLEEP Off 2 1 0 1 Synthesizer ON, Rx STDBY, Tx OFF WAIT Off 3 1 1 1 Synthesizer ON, Rx STDBY, Tx ON TRANSMIT On 4 1 1 0 Synthesizer ON, Rx ON, Tx OFF RECEIVE Off 5 1 0 0 Synthesizer ON, Rx OFF, Tx ON TRANSMIT Off
‘0’ – Logic LOW ‘1’ – Logic HIGH ‘X’ – Don’t Care
Supply voltages –0.3 to +6.0 V Voltage applied to any other pin –0.3 to V
Power dissipation, TA = 25°C (still air) 300 mW Maximum operating junction temperature 150 °C Maximum power input/output +20 dBm Storage temperature range –65 to +150 °C
Supply voltages: 2.7 to 3.6 V
Operating ambient temperature range –40 to +85 °C
to allow higher AC peak voltage. The ESD protection level has thus been
CC
+0.3 V
CCXX
1. Sleep mode (PLL OFF, Rx OFF, Tx OFF)
In this mode everything is switched off except the 3–wire digital bus. As long as the digital supply is still on, the programmed values are active and the 3–wire bus will continue to be programmable.
2. Wait Mode (Tx Off, Rx Standby)
PLL is on. Receiver is in the reduced current standby mode and the transmitter is completely switched off. This mode maybe useful if the PLL is to be kept on and is waiting for a quick turn–on to either transmit or receive modes, especially when Rx outputs are AC coupled.
3. Transmit mode (Rx standby)
The PLL and transmitter are on. The receive section is in a reduced current mode wherein most of the Rx circuitry is powered down
except for the bias and baseband circuits needed to hold the baseband output voltages in the active state. This mode is useful if the Rx baseband outputs are AC coupled via a large capacitor and the application demands quick turn–on for the Rx, from Tx.
4. Receive Mode (Tx Off)
The Transmitter is completely shut–off. The PLL and receiver sections are operating.
5. Transmit Mode (Rx OFF)
PLL and Transmit sections are on. However, the Receiver is completely shut–down. This mode is useful if the Rx baseband outputs are DC coupled to the external world.
2000 Oct 23
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Philips Semiconductors Product specification
SA1630IF quadrature transceiver

RX VGA CONTROL TABLE

GC5 GC4 GC3 GC2 GC1 GC0 DECIMAL NUMBER
0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 –2 0 0 0 0 1 0 2 –4 0 0 0 0 1 1 3 –6 0 0 0 1 0 0 4 –8 0 0 0 1 0 1 5 –10 0 0 0 1 1 0 6 –12 0 0 0 1 1 1 7 –14 0 0 1 0 0 0 8 –16 0 0 1 0 0 1 9 –18 0 0 1 0 1 0 10 –20 0 0 1 0 1 1 11 –22 0 0 1 1 0 0 12 –24 0 0 1 1 0 1 13 –26 0 0 1 1 1 0 14 –28 0 0 1 1 1 1 15 –30 0 1 0 1 1 1 23 –32 0 1 1 0 0 0 24 –34 0 1 1 0 0 1 25 –36 0 1 1 0 1 0 26 –38 0 1 1 0 1 1 27 –40 0 1 1 1 0 0 28 –42 0 1 1 1 0 1 29 –44 0 1 1 1 1 0 30 –46 0 1 1 1 1 1 31 –48 1 1 0 1 0 0 52 –50 1 1 0 1 0 1 53 –52 1 1 0 1 1 0 54 –54 1 1 0 1 1 1 55 –56 1 1 1 0 0 0 56 –58 1 1 1 0 0 1 57 –60 1 1 1 0 1 0 58 –62 1 1 1 0 1 1 59 –64 1 1 1 1 0 0 60 –66 1 1 1 1 0 1 61 –68 1 1 1 1 1 0 62 –70
REDUCTION FROM Gmax
2000 Oct 23
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Philips Semiconductors Product specification
SYMBOL
PARAMETER
TEST CONDITION
UNITS
SA1630IF quadrature transceiver

DC ELECTRICAL CHARACTERISTICS

VCCXXX=+3 V; VEEXXX = 0V; T
I
CC–4
I
CC–2
I
CC–3
I
CC–1
I
CC–5
V
REF
Z
OUT_VREF
Supply Current, Receive (mode #4)
Supply Current, Wait (mode #2)
Supply Current, Transmit (mode #3)
Supply Current, Sleep mode (mode #1)
Supply current transmit (mode 5)
_2.5 Reference voltage (mode 3, enabled) Load = 1.5 mA 2.5 V
Output impedance of reference voltage I = 1.4 to 1.6 mA 15
CMOS LOGIC INPUTS (DATA, CLOCK, STROBE)
V
IH
V
I
C
Input logic 1 level 2.0 V Input logic 0 level 0 0.8 V
IL
Input logic current 1 µA
I
Input logic capacitance 4 pF
I
CMOS Logic output (LOCK)
V
OH
V
OL
Output logic 1 level IO = –2 mA V Output logic 0 level IO = 2 mA 0.4 V
CMOS Logic Inputs (PLL_ON, RX_ON, TX_ON)
V
IH
V
I
Input logic 1 level Input logic 0 level 0 0.8 V
IL
Input logic current 1 µA
I
= 25 °C, unless otherwise stated.
amb
PLL_ON=Rx_ON=Hi
Tx_ON = Low
Wait mode (2)
PLL_ON = Hi
Tx_ON = Hi
Rx_ON = Low
PLL_ON = TX_ON = Hi
RX_ON = Hi
PLL_ON = Low
RX_ON = DC TX_ON = DC
PLL_ON = Hi
TX_ON = RX_ON = Low
LIMITS
MIN TYP MAX
33.5 41.5 mA
17 23 mA
26.5 34.5 mA
0.012 0.1 mA
22 28.5 mA
CCD
–0.4 V
CCD
2.0
V
CCTXRX
V
V
2000 Oct 23
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