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TD7614F
3-WIRE BUS, 1.3GHz
TOSHIBA
TOSHIBA BIPOLAR DIGITAL INTEGRATED CIRCUIT SILICON MONOLITHIC
TD'761l4F
3-WIRE BUS, 1.36Hz-FREQUENCY SYNTHESIZER IC
FEATURES
3-wire bus system (software-compatible with TD6380
series).
Built-in 4-band switch transistor.
Built-in tuning amp (high withstanding voltage of 35V).
Select switch can be selection of 31.25kHz, 50kHz or
62.5kHz frequency steps.
(Selected by open, VCC or GND)
Effects on sound signal suppressed by raising reference
frequency.
Compact flat package : 20-pin FP (1.27mm pitch).
Pin layout is mirror image of TD6380 series.
TD7614F
SOP20-P-300-1.27
Weight : 0.25g (Typ.)
FREQUENCY STEPS CRYSTAL OSCILLATOR SELECT SWITCH
31.25kHz 4.0MHz
50.0kHz 3.2MHz
62.5kHz 4.0MHz Open
(Note) This product is susceptible to surge voltages, so should be used with extreme care.
TOSHIBA
TD7614F
BLOCK DIAGRAM
Enable Data Clock |2L Tuning
Test Input Input Input VCC Cr stal Oscillator VCC VT NF
'' I-o-,
Control 18/19bit T nin Am
Counter Shift Register u g p.
l 1 8/9bit
I Counter
18/19bit
Charge
Data Latch Pump
Sbit - f
Swallow Counter
1 Phase
F Detector
9/10bit
Main Counter
1 /32, 1 /33 1 l4
2modulus - I
Prescaler Presca er Band Driver
1 I I I
System L, L, L,
Control 7 l 7
Q) Q) L3) Lt.) s 6 Q..) o.) e.) 10
Lock Chip ECL RF GND Band Band Band Band Band
Output Select VCC Input VCC 4 3 2 1
2 2001-06-25
TOSHIBA TD7614F
TERMINAL FUNCTION
m“ PIN NAME FUNCTION INTERFACE CIRCUIT
In normal use, connecting a 5.1kn
pull-up resistor to VCC sets this
output to low level when the
phase-Iocked loop (PLL) is locked.
When the phase error of phase
comparator continues less than
2ps and more than three cycles,
the loop is regarded as locked.
In test modes, this terminal
switches test mode 1 or 2. In test
mode 3, this pin functions as an
output pin for the frequency
divided (1/128) by the prescaler.
When measuring the input
sensitivity of the prescaler, connect
a Ikn pulI-up resistor to the 0.4V
power supply. The incoming
current fluctuates the internal
GND therefore avoid the apparent
drop in input sensitivity.
The internal reference frequency
varies depending on the voltage
applied. There are two internal ECLVCC 12L vcc
thresholds ; 1/3 VCC and 2/3
VCC- With open, the internal bias
PL Vcc
1 Lock Output
becomes 1/2 VCC- The frequency "ii
2 Chip Select steps are as follows. ct
Open 3N:
: 4.0MHz:-28x4=62.5kHz 2
GND 3 VCC
: 4.0MHz:-29x4=31.25kHz
: 3.2MHz:-28x4=50.0kHz
This teminal supplies current to
the prescaler. Connect a capacitor
E V . -
3 CL CC to reduce impedance and thus
eliminate power supply ripples.
3 2001-06-25
TOSHIBA
TD7614F
PIN NAME
FUNCTION
INTERFACE CIRCUIT
RF Input
Unlike current ICs, this IC has no
reference terminal for input.
Therefore, the GND and VCC
impedance must be reduced
sufficiently to suppress input
terminal bias fluctuation due to
interference.
Since the current for all blocks
flows out of GND, be sure to
make the pattern line as wide and
short as possible, and certain to
connect a capacitor to the power
supply line.
Band VCC
Due to the structure of the band
driver circuit, use a voltage of
between 8V and 14V.
Band 4
Band 3
Band 2
Band 1
Can be driven at up to maximum
50mA per band. The voltage drop
is below 0.15V (when VCC is 12V).
Do not drive more than 2 bands
simultaneously because of heat
due to power consumption.
These terminals are built in
overcurrent protection circuits.
When the terminal voltage drops
below 4.5V, the internal
comparator is activated and
driving stops. This mode continues
until the terminal is no longer
overloaded.
Band VCC
ECL VCC
aOkQ 70k0
This terminal provides negative
feedback for the active filter.
The filtered current is amplified by
the Darlington transistor then
passed to the tuning amp.
VT driver
TOSHIBA
TD7614F
PIN NAME
FUNCTION
INTERFACE CIRCUIT
This terminal is for high-
withstanding-voltage tuning amp
output. There is no output voltage
drop when VCC=33V is applied.
301(0.
Tuning VCC
This terminal supplies current to
the 30V tuning amp. Connect a
capacitor between this terminal
and GND.
Crystal Oscillator
These are crystal oscillator
terminals used to generate the
reference signal. The circuit
consists of an inverter amp with a
transistor. Since the reference
signal is transmitted forward from
the base of the transistor, when
the reference signal is derived
from other than the crystal
oscillator, connect them to pin 14.
Pin 15 is not used.
PL Vcc
9.9139 1099 l) O
IZL Vcc
This terminal supplies current to
the logic. Connect a capacitor
between this terminal and GND.
Clock Input
In normal use, this terminal is
used to input clock pulses. Since
the input is received by the base
of a PNP transistor, the incoming
current is extremely small. In test
modes 1 and 2, this terminal is
used to output the reference
signal obtained by dividing the
crystal oscillator frequency. In test
mode 3, the reference signal can
be input externally, and the
operation of the phase comparator
can be monitored.
TOSHIBA
TD7614F
PIN PIN NAME
FUNCTION
INTERFACE CIRCUIT
18 Data Input
Input interface circuit is the same
as clock pin. In test modes 1 and
2, this terminal is used for main
counter output.
In test mode 3, this terminal is
used to input comparison signal of
the phase comparator in order to
compare the phase with that of
the signal input from pin 17.
(Data are output to the NF
terminal).
19 Enable Input
Input interface circuit is the same
as clock terminal.
In normal use, this terminal counts
clocks from rise to fall of the
enable signal. Clocks other than 18
or 19 are ignored.
In the case of test mode, this
terminal switches test modes.
20 Test
Setting this terminal to low level
(GND or open) results in normal
tuning. Setting this terminal to
high level (VCC : 5V) switches
mode to test mode, enabling tests
IZL Vcc
MAXIMUM RATINGS (Ta = 25°C)
CHARACTERISTIC SYMBOL RATING UNIT
Supply Voltage 1 VCC1 6.0 V
Supply Voltage 2 VCCZ 6.0 V
Supply Voltage 3 VCC3 15 V
Supply Voltage 4 VCC4 35 V
Power Dissipation PD 925 mW
Operating Temperature Topr -20--75 "C
Storage Temperature Tstg - 55--150 °C
(Note) When using the device at above Ta =25°C, decrease the power dissipation by 7.4mW
for each increase of 1°C.
TOSHIBA TD7614F
RECOMMENDED SUPPLY VOLTAGE
m: PIN NAME MIN. TYP. MAX. UNIT
3 ECL Vcc 4.5 5.0 5.5 v
16 PL Vcc 4.5 5.0 5.5 v
6 Band Driver Vcc 8 12 13.2 v
13 Tuning VCC - 33 34 V
ELECTRICAL CHARACTERISTICS (Unless otherwise specified, VCC1 = 5V, VCC2 =12V, VCC3 = 33V, Ta = 25°C)
CHARACTERISTIC SYMBOL CIR- TEST CONDITION MIN. TYP. MAX. UNIT
Supply Current 1 Iccl ECL 20 50
Supply Current 2 ICC2 1 IZL 25
Supply Current 3 ICC3 Turns on a band driver 55 65 mA
Supply Current 4 ICO! 5 10
Band Driver Drive
I 1 50 55
Current BD
Band Driver Drive
V 1 I = A .1
Voltage Drop BD SAT BD 50m 0 5 V
Tuning Amp Output
Low-Level Voltage VTOUT 2 0.6
1/IN1 f=80--150MHz -20 - 3
s',':,',,?,'.,?,.',,,"""" VINZ 3 f=150~1000MHz -27 - 3 £25310)
y leg f=1.0-1.3GHz - 20 - 3
Clock Pulse Width Tc duty=50% 3
Data Hold Time TH duty=50% 3
Enable Set Up Time TL 2 10 s
Enable Hold Time TSL 3 /1
Next Clock Disable T 7
Time NC
. High
Selector Switch L I Vth H 3.0 3.3 3.6
Threshold L21: 2 V
Volta e 1.4 1.7 2.
g Level Vth L 0
Bus Interface High liy H Applies to enable, data, and 10
Pin In ut Level 2 clock A
p Low Applies to enable, data, and #
Current lin L - 20
Level clock
Bus Interface High " H Applies to enable, data, and 3.0
. Level clock
Pin Input 2 . V
Low Applies to enable, data, and
Voltage " L 0.8
Level clock
7 2001-06-25
TOSHIBA TD7614F
CHARACTERISTIC SYMBOL CIR- TEST CONDITION MIN. TYP. MAX. UNIT
High VLO H Applies to lock, data, and 3.0
Output Mode Level 4 clock V
Output Voltage Low Applies to lock, data, and
VLo L 0.8
Level clock
Selector Switch Open
V 2 2.2 2. 2. V
Voltage th 0 5 8
TEST MODE OPERATION
Setting the test terminal (pin 20) to high level enters test modes. There are three kinds of test
modes as follows :
(1)Test modes 1 and 2
Test modes 1 and 2 are used to test the PLL lock state. After data are input to the main
counter and swallow counter, set the test terminal (pin 20) to high level while keeping the
enable terminal (pin 19) at low level. In this state, the comparison frequency signal is output to
the clock terminal (pin 17) and main counter division signal to the data terminal (pin 18). The
high-frequency signal is input from the RF input terminal (pin 4).
The prescaler divider ratio can be switched by changing the voltage applied to the m output
terminal (pin1).
Lock output (pin 1) applied voltage at high level : 1/4 divider ratio
Lock output (pin 1) applied voltage at low level
(2) Test mode 3
: 1/1 divider ratio
Test mode 3 is used to test the prescaler, phase comparator, and charge pump. Setting both the
test terminal (pin 20) and the enable terminal (pin 19) to high level enters test mode 3. The
comparison frequency signal of phase comparator is input from the clock terminal (pin17), the
comparated frequency signal is input from the data terminal (pin 18), and the prescaler output
(fixed at 1/128 divider ratio) is output to the lock output terminal (pin1).
The output polarity of phase comparator is as follows.
INPUT FREQUENCY
NF OUTPUT PIN (pin11)
Input frequency>programmed frequency High level
Input frequency
TOSHIBA TD7614F
TEST MODE
PIN NAME MODE 1 MODE 2 MODE 3
Lock output (pin 1) High level Low level 1/128
1/4 1/1
RF input (pin 4) RF input RF input RF input
(1 /4 normal mode
frequency input)
Clock input (pin 17)
Select switch (pin 2)
Open : 15.625kHz
Vcc :12.5kHz
GND : 7.8125kHz
Select switch (pin 2)
Open : 15.625kHz
VCC :12.5kHz
GND :7.8125kH2
The reference signal input
of phase comparator
Data input (pin 18)
Main counter output
Main counter output
The comparated
frequency signal input of
phase comparator
Enable input (pin 19)
Low level
Low level
High level
Test (pin 20)
High level
High level
High level
TIMING OF DATA INPUT
The method of inputting data will be indicated in the diagram 1.
COMPUTATION OF LOCK FREQUENCY
Lock frequency is calculated as follows :
fosc=frx4x(32M +S)
fOSC : The oscillation frequency of VCO (the input frequency signal of a prescaler)
fr : Reference frequency : it will be 1/28 or 1/29 of the oscillation frequency of a crystal
oscillator.
M : Preset value of Main counter.
S : Preset value of Swallow counter.
ITEM SELECTION (Pin 2) OPEN VCC GND
Main Counter 9bit 10bit 10bit
Swallow Counter 5bit 5bit 5bit
Reference Frequency 15.625kHz 12.5kHz 7.8125kHz
4MHz/28 3.2MHz/23 4MHz/29
Frequency Step 62.5kHz 50kHz 31.25kHz
9 2001-06-25
TOSHIBA TD7614F
Fig.1 Normal use
4bit 10bit 5bit
Invalid data I band switch data I main counter data I swallow counter data I Invalid data
BAND MSB-8 MSB-9
Clock JlllllllllllllllllllllllllllllllllllL
Enable-l l,
- Time
Data pulse is only valid during the Low to High transition of clock pulse.
Fig.2 Test mode (mode 1, 2)
bit data same as Fig.1
Data mg] x X X
Clock n ll n n n l .
" ' Reference signal output
Main counter output
Enable I u I
Fig.3 Timing chart of 3 wire-bus (rising timing)
MSB LSB
Data W ....... m
Clock m1:l—‘ i.,
. TL i' i' 5TH? i 5
-':-f- 2 -t-f- , i
3 Tc? 2 TSL 5 i
-,-r- ' -,-r- . :
5 TM i:
10 2001-06-25
TOSHIBA
TEST CIRCUIT 1.
TEST CIRCUIT 2.
TD7614F
Supply test circuit
C) 33V
(ri), 4M r,li,S AI:
d I ;18; J; 16 'i/iii' j?'''-',,,, 0
) TD7614F
AC operating test circuit
i, 33V VT output
; 6% ® (it (W; ll
. TD7614F
1 2 3 4 5 6 Q? (£13) (Sf) Q19
G l T “f I ".‘F
. "6 g .
RFinput 12V
TOSHIBA TD7614F
TEST CIRCUIT 3. Input sensitivity test circuit
20 19 (18; J; 116) (Q (179 GE (Q G1)
) TD7614F
1 Q) a 4 s (9 0) Q.) Q) Q9
0.4V1kQ 1nF
1/128 monitor
-3dB ATT
RF input
TEST CIRCUIT 4. Output mode test circuit
MCU 5%
19 1% i'y:c-f):,,-,
'NPV' _lfro, 3; 5 m 4M 2
20 19 18 17 16 15 14 ® (Q 61)
. TD7614F
1 Q) a (fl, 5 Le) 0) Q3) (9) Q9
C; 11f Tr
1...(5 g
1/4xRF input
12 2001-06-25
TOSHIBA TD7614F
Ta = 25°C Ta = 75°C
Fi?. B
st, J.'.,
0 400 800 1200 1600 2000 2400 0 400 800 1200 1600 2000 2400
Input frequency (MHz) Input frequency (MHz)
Ta = - 25''C
0 400 800 1200 1600 2000 2400
Input frequency (MHz)
13 2001-06-25
TOSHIBA TD7614F
APPLICATION CIRCUIT EXAMPLE OF FREQUENCY SYNTHESIZER
14 +12v 6
g: X'tal osc Ci) VHFL
15 Ci) VHFH
33pF Band switch
open 3 band tuner
Pin protection
V 0.01,»
(ii),'
0.001PF
RF input 4
Enable Cy-cub-ai
TD7614F
.1 F 33km
Data h---Euii7''v'-(18.' Data 0 ff " C AFT
I m NF ci?, I p. Cj
Clock D-i-UNK-ci 0.01/1F
I - VT D---
Lock Dr----'-''--!-) Lock output AGC
. +33 @—
It depends on l
software l VCC VCC chip
l IZL ECL Test select RF AGC
l 51m 16 Ls. 5 20 (7) 33V
._ w - + . Open 62.5kHz step . + 0 +3
t GND 31.25kHz step Q,
Fe I- 5V 50kHz step I F
th01pzF (3.2MHz X'tal)
14 2001-06-25
TOSHIBA TD7614F
PACKAGE DIMENSIONS
SOP20-P-300-1.27 Unit : mm
H H H H H H H H a : " I
04 m C-C-?
3 iii 8E
C) m ts s2
7 H ill ll H H H H H v. -
l1.27| L‘
.: 13.1MAX
h 12.61112 7
[ 'N ti
tl a ta'.
,-" N $3
5. sag
i l 0.6i0.2
Weight : 0.25g (Typ.)
15 2001-06-25
TOSHIBA TD7614F
RESTRICTIONS ON PRODUCT USE
000707EBA
OTOSHIBA is continually working to improve the quality and reliability of its products.
Nevertheless, semiconductor devices in general can malfunction or fail due to their inherent
electrical sensitivity and vulnerability to physical stress. It is the responsibility of the buyer,
when utilizing TOSHIBA products, to comply with the standards of safety in making a safe
design for the entire system, and to avoid situations in which a malfunction or failure of such
TOSHIBA products could cause loss of human life, bodily injury or damage to property.
In developing your designs, please ensure that TOSHIBA products are used within specified
operating ranges as set forth in the most recent TOSHIBA products specifications. Also, please
keep in mind the precautions and conditions set forth in the "Handling Guide for
Semiconductor Devices," or "TOSHIBA Semiconductor Reliability Handbook" etc..
OThe TOSHIBA products listed in this document are intended for usage in general electronics
applications (computer, personal equipment, office equipment, measuring equipment, industrial
robotics, domestic appliances, etc.). These TOSHIBA products are neither intended nor
warranted for usage in equipment that requires extraordinarily high quality and/or reliability or
a malfunction or failure of which may cause loss of human life or bodily injury ("Unintended
Usage"). Unintended Usage include atomic energy control instruments, airplane or spaceship
instruments, transportation instruments, traffic signal instruments, combustion control
instruments, medical instruments, all types of safety devices, etc.. Unintended Usage of TOSHIBA
products listed in this document shall be made at the customer's own risk.
0 The products described in this document are subject to the foreign exchange and foreign trade
OThe information contained herein is presented only as a guide for the applications of our
products. No responsibility is assumed by TOSHIBA CORPORATION for any infringements of
intellectual property or other rights of the third parties which may result from its use. No
license is granted by implication or otherwise under any intellectual property or other rights of
TOSHIBA CORPORATION or others.
0 The information contained herein is subject to change without notice.
16 2001-06-25
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