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Package Cooled:94+
Part Number: MC44827B
Package Cooled: 94+
Description: The MC44827/27B are tuning circuits for TV and VCR tuner applications. They contain on one chip all th...
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MC44827B
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DataSheet
General Description
MC44827B General 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).
MC44827B Maximum Ratings
|
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 |
2. At VCC3 = VCC1 to 14.4 V and TA = 20° to + 80.
3. ESD data available upon request.
MC44827B 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)
• 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)
MC44827B Connection Diagram
MC44827B
PDF/DataSheet Download
- Datasheet: MC44827B
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