UC1635J [TI]
Phase Locked Frequency Controller 16-CDIP -55 to 125;
| 型号： | UC1635J |
| 厂家： | 
TEXAS INSTRUMENTS |
| 描述： | Phase Locked Frequency Controller 16-CDIP -55 to 125 CD |
| 文件： | 总5页 (文件大小：337K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
UC1635
UC2635
UC3635
Phase Locked Frequency Controller
FEATURES
DESCRIPTION
•
Precision Phase Locked Frequency
The UC1635 family of integrated circuits was designed for use in preci-
sion speed control of DC motors. An extension to the UC1633 line of
phase locked controllers, these devices provide access to both of the
digital phase detector’s inputs, and include a reference frequency di-
vider output pin. With this added flexibility, this family of controllers can
be used to obtain phase synchronization of multiple motors.
Control System
•
•
Crystal Oscillator
Programmable Reference Frequency
Dividers
•
•
•
Phase Detector with Absolute Frequency
Steering
A reference frequency can be generated using the device’s crystal oscil-
lator and programmable dividers. The oscillator operates using a broad
range of crystals, or, can function as a buffer stage to an external fre-
quency source.
Separate Divider Outputs and Phase
Detector Input Pins
Double Edge Option on the Frequency
Feedback Sensing Amplifier
The phase detector responds proportionally to the phase error between
the detector’s minus input pin and the sense amplifier output. This
phase detector includes absolute frequency steering to provide maxi-
mum drive signals when any frequency error exists. This feature allows
optimum start-up and lock times to be realized.
•
•
Two High Current Op Amps
5V Reference Output
Two op-amps are included that can be configured to provide necessary
loop filtering. The outputs of these op-amps will source or sink in excess
of 16mA, so they can provide a low impedance control signal to driving
circuits.
Additional features include a double edge option on the sense amplifier
that can be used to double the loop reference frequency for increased
loop bandwidths. A 5V reference output can be used to accurately set
DC operating levels.
BLOCK DIAGRAM
UDG-92019
7/97
UC1635
UC2635
UC3635
ABSOLUTE MAXIMUM RATINGS
CONNECTION DIAGRAMS
Input Supply Voltage (+VIN) . . . . . . . . . . . . . . . . . . . . +20V
Reference Output Current . . . . . . . . . . . . . . . . . . . . . -30mA
Op-Amp Output Currents . . . . . . . . . . . . . . . . . . . . ±30mA
Op-Amp Input Voltages . . . . . . . . . . . . . . . . . . -0.3 to +20V
Phase Detector Input Voltage . . . . . . . . . . . . . -0.3V to +5V
Phase Detector Output Current . . . . . . . . . . . . . . . . ±10mA
Lock Indicator Output Current . . . . . . . . . . . . . . . . . +15mA
Lock Indicator Output Voltage . . . . . . . . . . . . . . . . . . . +20V
Divide Select Input Voltages . . . . . . . . . . . . -0.3V to +10V
Double Edge Disable Input Voltage . . . . . . . -0.3V to +10V
Oscillator Input Voltage . . . . . . . . . . . . . . . . . . -0.3V to +5V
Sense Amplifier Input Voltage . . . . . . . . . . . . -0.3V to +20V
Power Dissipation at TA = 25°C, (Note 2) . . . . . . . 1000mW
Power Dissipation at TC = 25°C, (Note 2) . . . . . . . 2000mW
Operating Junction Temperature . . . . . . . . . -55° to 150°C
Storage Temperature . . . . . . . . . . . . . . . . . -65° to +150°C
Lead Temperature (Soldering, 10 Seconds) . . . . . . . 300°C
SOIC–16 (Top View)
DW Package
Note 1: Voltages are referenced to ground, (Pin 16). Currents
are positive into, negative out of, the specified terminals.
Note 2: Consult Unitrode Integrated Circuits databook for in-
formation regarding thermal specifications and limitations of
packages.
DIL–16 (Top View)
J & N Packages
PLCC-20 & LCC-20
(Top View)
Q & L Packages
PACKAGE PIN FUNCTION
FUNCTION
PIN
N/C
Div 2/4
1
2
Phase Detector Input
Divider Output
Phase Detector Output
N/C
3
4
5
6
Dbl Edge Disable Input
Sense Amp Input
5V Ref Output
Loop Amp Inv Input
N/C
Loop Amp Output
Aux Amp Non-Inv Input
Aux Amp Inv Input
Aux Amp Output
N/C
7
8
9
10
11
12
13
14
15
16
17
18
19
20
+VIN
OSC Output
OSC Input
Ground
Unless otherwise stated, specifications hold for TA = 0°C to +70°C for the UC3635, -25°C to +85°C for
the UC2635 and -55°C to +125°C for the UC1635, +VIN = 12V. TA = TJ.
ELECTRICAL
CHARACTERISTICS:
PARAMETER
TEST CONDITIONS
MIN
4.75
15
TYP
MAX UNITS
Supply Current
+VIN = 15V
20
28
mA
Reference
Output Voltage (VREF)
Load Regulation
5.0
5.0
2.0
35
5.25
20
V
IOUT = 0 to 7mA
+VIN = 8 to 15V
VOUT = 0V
mV
mV
mA
Line Regulation
20
Short Circuit Current
2
UC1635
UC2635
UC3635
ELECTRICAL CHARACTERISTICS: Unless otherwise stated, specifications hold for TA = 0°C to +70°C for the UC3635,
-25°C to +85°C for the UC2635 and -55°C to +125°C for the UC1635, +Vin = 12V. TA = TJ.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX UNITS
Oscillator
DC Voltage Gain
Oscillator Input to Oscillator Output
12
1.15
1.3
1.2
10
16
1.3
1.6
1.4
20
1.45
1.9
dB
V
Input DC Level (VIB)
Oscillator Input Pin Open, TJ = 25°C
±
Input Impedance (Note 2)
Output DC Level
VIN = VIB 0.5V, TJ = 25°C
kΩ
V
Oscillator Input Pin Open, TJ = 25°C
1.6
Maximum Operating Frequency
MHz
Dividers
Maximum Input Frequency
Div 2/4 Input Current
Input = 1Vpp at Oscillator Input
Input = 5V (Div. by 2)
10
MHz
µA
µA
V
150
0.0
1.6
4.5
500
5.0
2.2
Input = 0V (Div. by 4)
-5.0
0.5
4.0
Div 2/4 Threshold
Divider Output
High Level (w/6.8k Load to GND)
V
Low Level (Open Collector Leakage)
10
33
µA
Sense Amplifier
Threshold Voltage
Threshold Hysteresis
Input Bias Current
Double Edge Disable Input
Input Current
Percent of VREF
Input = 1.5V
27
30
10
%
mV
µA
-1.0
-0.2
Input = 5V (Disabled)
Input = 0V (Enabled)
150
0.0
1.6
500
5.0
2.2
µA
µA
V
-5.0
0.5
Threshold Voltage
Phase Detector
-Input Threshold
-Input Current
Detector Responds to Falling Edge
Input = 2.2V
0.5
1.6
100
0.2
0.2
50
2.2
250
0.5
0.5
53
V
µA
V
High Output Level
Low Output Level
Mid Output Level
Positive Phase/Freq. Error, Volts Below VREF
Negative Phase/Freq. Error
Zero Phase/Freq. Error, Percent of VREF
VOUT = 4.3V
V
47
%
High Level Maximum Source
Current
2.0
8.0
mA
Low Level Maximum Sink Current VOUT 0.7V
2.0
4.5
5.0
6.0
mA
Mid Level Output Impedance
(Note 3)
IOUT = -200 to +200µA, TJ = 25°C
7.5
53
kΩ
Loop Amplifier
Non-Inv Reference Voltage
Input Bias Current
AVOL
Percent of VREF
Input = 2.5V
47
-0.8
60
50
-0.2
75
%
µA
dB
dB
mA
mA
PSRR
+VIN = 8 to 15V
Source, VOUT = 0V
Sink, VOUT = 5V
70
100
35
Short Circuit Current
16
16
30
Note 3: These impedance levels will vary with TJ at about 1700ppm/ °C.
3
UC1635
UC2635
UC3635
ELECTRICAL CHARACTERISTICS (cont.): Unless otherwise stated, specifications hold for TA = 0°C to +70°C for the
UC3635, -25°C to +85°C for the UC2635 and -55°C to +125°C for the UC1635, +Vin = 12V. TA = TJ.
PARAMETER TEST CONDITIONS
Auxiliary Op-Amp
MIN
TYP
MAX UNITS
Input Offset Voltage
Input Bias Current
Input Offset Current
AVOL
VCM = 2.5V
VCM = 2.5V
VCM = 2.5V
8
mV
µA
µA
dB
dB
dB
mA
mA
-0.8
-0.2
.01
120
100
100
35
0.1
70
70
70
16
16
PSRR
+VIN = 8 to 15V
VCM = 0 to 10V
Source, VOUT = 0V
Sink, VOUT = 5V
CMRR
Short Circuit Current
30
Application and Operation Information
(For Additional Application Information see the UC1633 Data Sheet)
(Pin numbers refer to DIL and SOIC packages)
Phase Detector Input Detail
UDG-92012
Reference Divider Output Detail
UDG-92011-1
UNITRODE CORPORATION
7 CONTINENTAL BLVD. • MERRIMACK, NH 03054
TEL. (603) 424-2410 • FAX (603) 424-3460
4
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