mc13109 Freescale Semiconductor, Inc, mc13109 Datasheet - Page 10

• Manufacturer Part Number: mc13109
• Description: Universal Cordless Telephone Subsystem
• Manufacturer: Freescale Semiconductor, Inc

ELECTRICAL CHARACTERISTICS
Splatter Amplifier (see Figure 7)
operational amplifier with the non–inverting input terminal
connected to the internal V B half supply reference. External
T x Audio Path Recommendation
includes setting the Microphone Amplifier gain to 16 dB using
the external gain setting resistors and setting the Splatter
PLL Voltage Regulator
The “V CC Audio” pin is the supply voltage for the internal
voltage regulator. The “PLL V ref ” pin is the 2.2 V regulated
output voltage. Two capacitors with 10 F and 0.01 F values
must be connected to the “PLL V ref ” pin to filter and stabilize
this regulated voltage. The voltage regulator provides power
for the 2nd LO, R x and T x PLL’s, and MPU Interface. The
voltage regulator can also be used to provide a regulated
supply voltage for external IC’s. R x and T x PLL loop
performance are independent of the power supply voltage
when the voltage regulator is used. The voltage regulator
requires about 200 mV of “headroom”. When the power
supply decreases to within about 200 mV of the output
(Test Conditions: V CC = 2.6 V, T A = 25 C, f in = 1.0 kHz, External resistors Set for Gain of 1.)
(Test Conditions: V CC = 2.6 V, T A = 25 C.)
Open Loop Gain
Gain Bandwidth
Maximum Output
Output Voltge Level
Line Regulation
Load Regulation
Drop–Out Voltage
10
The Splatter Amplifier is an inverting rail–to–rail output
The recommended configuration for the T x Audio path
The PLL supply voltage is regulated to a nominal of 2.2 V.
Swing
Characteristic
Characteristic
I L = 0 mA, V CC = 2.6 to
R L = 10 k
V CC = 2.6 V,
V CC = 2.6 V, I L = 0 to
I L = 0 mA
O L = 0 mA
5.5 V
1.0 mA
Condition
Condition
–
–
(continued)
Spl Amp
Spl Amp
Spl Amp
Input
Input
V CC
V CC
Pin
Pin
In
In
In
–
–
MC13109
V CC PLL
V CC PLL
V CC PLL
Measure
Measure
T x Out
T x Out
T x Out
Pin
Pin
–
resistors and capacitors can be connected to set the gain and
frequency response. The “Spl Amp In” input is ac coupled.
Amplifier gain to 9.0 dB using the external gain setting
resistors. With these gain values, the total T x Path transfer
characteristic is shown in Figure 7.
voltage, the regulator will go out of regulation but the output
voltage will not turn off. Instead, the output voltage will
maintain about a 200 mV delta to the power supply voltage as
the power supply voltage continues to decrease. The “PLL
V ref ” pin can be connected to “V CC Audio” by the external
wiring if voltage higher than 2.2 V is required. But it should
not be connected to other supply except “V CC Audio”. The
voltage regulator is “on” in the Active and R x modes. In the
Standby and Inactive modes, the voltage regulator is turned
off to reduce current drain and the “PLL V ref ” pin is internally
connected to “V CC Audio” (i.e., the supply voltage is
maintained but is now unregulated).
Symbol
Symbol
Reg load
V Omax
Reg line
A VOL
GBW
V out
DO
MOTOROLA ANALOG IC DEVICE DATA
Min
Min
1.9
–
–
–
–
–
–
V CC – 0.3
–1.86
1.43
Typ
100
Typ
2.2
60
–
V out + 200
Max
Max
2.5
40
40
–
–
–
Unit
Unit
V pp
kHz
mV
mV
mV
dB
V