sp5502 Mitel, sp5502 Datasheet - Page 2

• Manufacturer Part Number: sp5502
• Description: 1.3ghz I2c Bus 4-address Synthesiser
• Manufacturer: Mitel

NOTES
1. Source impedance between all output ports and ground is approximately 5 . This should be taken into account when calculating output port
saturation voltages.
2. The maximum resistance quoted refers to all conditions, including start-up.
FUNCTIONAL DESCRIPTION (Except where
otherwise indicated, ‘SP5502’ refers to both
variants)
Clock are fed in on the SDA and SCL lines respectively as
defined by the I
accept new data (write mode) or send data (read mode). The
Tables in Fig. 3 illustrate the format of the data. The device
can be programmed to respond to several addresses, which
enables the use of more than one synthesiser in an I
system. Table 3 shows how the address is selected by
applying a voltage to P3. The address input is shown in Fig.
6. The LSB of the address Byte (R/W) sets the device into read
mode if it is high and write mode if it is low. When the SP5502
receives a correct address Byte it pulls the SDA line low
during the acknowledge period and during following acknowl-
edge periods after further data Bytes are programmed. When
the SP5502 is programmed into the read mode the controlling
device accepting the data must pull down the SDA line during
the following acknowledge period to read another status Byte.
ELECTRICAL CHARACTERISTICS
These Characteristics are guaranteed by either production test or design. They apply within the specified ambient temperature
and supply voltage ranges unless otherwise stated. Reference frequency 4MHz unless otherwise stated.
2
Supply current
Prescaler input voltage
Prescaler input voltage
Prescaler input impedance
Prescaler input capacitance
SDA, SCL
SDA
Charge pump current low
Charge pump current high
Charge pump output leakage current
Charge pump drive output current
Charge pump amplifier gain
Recommended crystal series resistance
Crystal oscillator drive level
Crystal oscillator negative resistance
Output Ports
Input Port
The SP5502 is programmed from an I
T
AMB
Input high voltage
Input low voltage
Input high current
Input low current
Leakage current
Output voltage
Sink current
Leakage current
P3 input current high
P3 input current low
=
10°C to
Characteristic
2
C Bus format. The synthesiser can either
80°C, V
CC
=
4·5V to
2
C BUS. Data and
5·5V. All pin references are to the SP5502S (MP16 package).
6,7,9-11
6,7,9-11
13,14
13,14
Pin
4,5
4,5
4,5
4,5
4,5
12
16
4
1
1
1
2
8
8
2
C Bus
Min.
12·5
500
750
30
10
20
3
0
Value
6400
WRITE MODE (FREQUENCY SYNTHESIS)
synthesised frequency while Bytes 4 5 select the output port
states and charge pump information.
the first Bit of the next Byte determines whether that Byte is
interpreted as Byte 2 or 4, a logic 0 for frequency information
and a logic 1 for charge pump and output port information.
Additional data Bytes can be entered without the need to re-
address the device until an I
This allows a smooth frequency sweep for fine tuning or AFC
purposes.
another device on the bus) then the previously programmed
byte is maintained.
register and is used to control the division ratio of the 15-bit
programmable divider which is preceded by a divide-by-8
prescaler and amplifier to give excellent sensitivity at the local
oscillator input; see Fig 5. The input impedance is shown in Fig
7.
Typ.
48
50
40
170
2
50
When the device is in the write mode Bytes 2 3 select the
Once the correct address is received and acknowledged,
If the transmission of data is stopped mid-byte (i.e., by
Frequency data from Bytes 2 and 3 is stored in a 15-bit shift
Max.
300
300
V
200
1·5
60
10
10
10
0·4
1
0·5
CC
10
5
mV p-p
mVrms
mVrms
Units
mA
mA
mA
mA
µA
µA
µA
µA
µA
nA
µA
pF
V
V
V
V
80MHz to 1GHz
1·3GHz, see Fig. 5
Input voltage = V
Input voltage = 0V
When V
Sink current = 3mA
Byte 4, bit 2 = 0, pin 1 = 2V
Byte 4, bit 2 = 1, pin 1 = 2V
Byte 4, bit 4 = 1, pin 1 = 2V
V pin 16 = 0·7V
Parallel resonant crystal (note 2)
V
V
V pin 8 = V
V pin 8 = 0V
CC
OUT
OUT
2
C stop condition is recognised.
= 5V
= 0·7V (see note 1)
= 13·2V
CC
= 0V
Conditions
CC
CC