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MC44827

Features: • Complete Single Chip System for MPU Control (3Wire Bus). Data and Clock Inputs are I2C Bus Compatible• Divideby8 Prescaler Accepts Frequencies up to 1.3 GHz• 15 Bit Programmable Divider Accepts Input Frequencies up to 165 MHz• 3State Phase/Frequency Comparator&#...

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SeekIC No. : 004416011 Detail

MC44827: Features: • Complete Single Chip System for MPU Control (3Wire Bus). Data and Clock Inputs are I2C Bus Compatible• Divideby8 Prescaler Accepts Frequencies up to 1.3 GHz• 15 Bit Pro...

MC44827 Data Sheet

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Part Number:
MC44827
Supply Ability:
5000

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Product Details

Description



Features:

• Complete Single Chip System for MPU Control (3Wire Bus). Data and Clock Inputs are I2C Bus Compatible
• Divideby8 Prescaler Accepts Frequencies up to 1.3 GHz
• 15 Bit Programmable Divider Accepts Input Frequencies up to 165 MHz
• 3State Phase/Frequency Comparator
• Operational Amplifier for Direct Tuning Voltage Output (30 V)
• Four Integrated PNP Band Buffers can drive up to 40 mA (VCC1 to 14.4 V)
• Output Options for the Reference Frequency and the Programmable Divider
• Bus Protocol for 18 or 19 Bit Transmission
• Extra 34Bit Protocol for Test and Further Features
• High Sensitivity Preamplifier
• Lower Power Consumption, 200 mW Typical
• Improved Prescaler with Higher Margins for Sensitivity and Temperature Range
• Lock Detector with PushPull Output
• SpaceSaving TSSOP Package
• ESD Protected to MILSTD883C, Method 3015.7 (1.5 k,100 pF)


Pinout

Connection Diagram


Specifications

Rating
Pin
Value
Unit
Power Supply Voltage (VCC1)
7
6.0
V
Band Buffer "Off" Voltage
1013
14.4
V
Band Buffer "On" Current
10-13
50
mA
Band Buffer Pin Shorted to Ground or VCC3 (Short Circuit Duration) (Note 1)
1013
Continuous
-
Operational Amplifier Power Supply Voltage (VCC2)
6
40
V
Operational Amplifier Pin Shorted to Ground or VCC2 (Short Circuit Duration)
5
Continuous
-
Power Supply Voltage (VCC3)
14
14.4
V
Storage Temperature
-
65 to +150
Operating Temperature Range
-
20 to +80
Band Buffer Operation (Note 2) at 50 mA each Buffer All Buffers "On" Simultaneously
10-13
10
s
Operational Amplifier Output Voltage
5
VCC2
v
RF Input Level (80 MHz to 1.3 GHz)
8
1.5
Vrms
NOTES: 1. At VCC3 = VCC1 to 14.4 V and TA = 20° to + 80 one buffer "On" only.
             2. At VCC3 = VCC1 to 14.4 V and TA = 20° to + 80.
             3. ESD data available upon request.


Description

The MC44827/27B are tuning circuits for TV and VCR tuner applications. They contain on one chip all the functions required for PLL control of a VCO. The integrated circuits also contain a high frequency prescaler and thus can handle frequencies up to 1.3 GHz.

The MC44827 has programmable 512/1024 reference divider while the MC44827B has a fixed reference divider of 1024.

The MC44827/27B offer the same features as MC44817/17B but has improved sensitivity performance and reduced power dissipation. The low frequency preamplifier has been removed and the operational amplifier pullup resistor has been increased to 60 kW.

The MC44827/27B are controlled via a 3wire bus. The MC44827/27B have the same functions as the MC44828 which is I2C bus controlled. The MC44827/27B and the MC44828 can be exchanged to allow conversion m between 3wire bus and I2C bus control.

The MC44827/27B are manufactured on a single silicon chip using Motorola's high density bipolar process, MOSAICE TM(Motorola Oxide Self Aligned Implanted Circuits).




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