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TA1250F
4-CHANNEL RECORDING AMPLIFIER & PRE-AMPLIFIER FOR VCR
TOSHIBA TA1250F
TOSHIBA BIPOLAR LINEAR INTEGRATED CIRCUIT SILICON MONOLITHIC
"rA'ii250IF
4-CHANNEL RECORDING AMPLIFIER & PRE-AMPLIFIER FOR VCR
FEATURES
The TA1250F is a 4-channel recording amplifier and pre-
amplifier for use in VCR. Since the recording amplifier
uses a differential mechanism, it is particularly effective in
reducing high-frequency even-ordered distortion.
The pre-amplifier also has a differential mechanism and
thus also reduces noise.
Differential drive type recording amplifier
SSOP24-P-300-1.00
Weight : 0.32g (Typ.)
Differential input type pre-amplifier
Built-in envelope detector for auto-tracking
Built-in envelope comparator for special playback
Built-in recording mute circuit
Board patterns can easily be shared, due to the high pin compatibility with the TA1249F 2-channel
recording amplifier and pre-amplifier, and the TA1273F 6-channel recording amplifier and pre-
amplifier.
1 2001-06-25
TOSHIBA TA1250F
BLOCK DIAGRAM
TO - H. sw REC SP L REC MUTE
COMP. OUT TRICK H REC-RF ENV. DET. PB-RF
2 2001-06-25
TOSHIBA TA1250F
PIN FUNCTION NCC-- 5.0V, Ta =25°C)
PIN No. FUNCTION Tll'oftlgf INTERFACE CIRCUIT NOTES
1 Filter 4
3 Filter 3 2.7V
1.8V f1i)iii. 2m DC return filter
12 Filter 2
13 Filter 1 8
'ii' 000 :
2 ENV.COMP. OUT - 5 -OD SP 0V
1: EP : SV
. a Current input type
4 't','i'clt22ustwai't1cdhi,, Rec : 0.9V 0 Trick mode set when
g . pin4 (TP4) raised to H.
5 EP Rec input Rec : 0.9V fi Current input type
6 ENV.DET.OUT - 2kg -
if, Ir
7 GND (0V) - -
SP : 0.3mVp-p input
- l 57dB
212mVp-p output
8 PB RF OUT 2V Cl Hi) EP : 0.3mV - input
COMP g p p
300mVp-p output
9 Vcc (5V) - -
Refer to the head
10 Head SW & Rec H 2 5V switching table in the
Control Tables.
TP10-9H : Rec Mode
TOSHIBA TA1250F
TYPICAL DC
PIN No. FUNCTION VOLTAGE INTERFACE CIRCUIT NOTES
V11 voltage
11 Mode switching & h : EFF:
Rec Mute TP11 voltage
H : Rec Mute
14 Rec OUT1 (SP1)
18 Rec OUT2 SP2
( ) Open collector -
20 Rec OUT3 (EP1)
24 Rec OUT4 (EP2)
15 PB IN1 (SP1)
17 PB IN2 (SP2)
PB :0.9V G(i1) 60m -
21 PB IN3 (EP1) ®®
23 PB Ibl4 (EP2)
16 Head COMMON 1
Rec : 4.3V -
PB :0.1V
22 Head COMMON 2
19 Head GND (0V) -
CONTROL TABLES
HEAD switching
V10 voltage SP mode EP mode
During PB H 2ch 1ch
L 1ch 2ch
(Note) The above settings are controlled by the input and output currents.
Pin10 (TP10) has function of Rec H too.
MODE switching
V11 voltage Mode
(Note) Pin 11 has function of Rec Mute too.
When pin 11 (TP11) is raised to H (Vcc), then Rec Mute mode is set.
It Trick mode is set by raising pin4 (TP4) to H.
4 2001-06-25
TOSHIBA
TA1250F
EXAMPLES OF REC CURRENT SETTING
Input : 500mup-p, 4MHz
REC CURRENT
MODE INPUT RESISTANCE (SINGLE-CHANNEL
OUTPUT)
SP 1.5kQ 14.9mA
2.0kQ 11.2mA
EP 1.5kQ 10.5mA
2.0kQ 7.9mA
MAXIMUM RATINGS (Ta=25°C)
CHARACTERISTIC SYMBOL RATING UNIT
Power Supply Voltage VCC 7 V
Power Dissipation 1 PDI (Note 1) 595 mW
Power Dissipation 2 PD2 (Note 2) 830 mW
Input Voltage VIN GND - 0.3--Vcc +0.3 V
Operating Temperature Topr - 20--75 ''C
Storage Temperature Tstg - 55--150 ''C
(Note 1) Derated linearly above Ta=25°C in the proportion of 4.8mW/°C.
(Note 2) On the board mounting (Glass epoxy 50x50x1.6mm, Area of copper : 30%)
Derated linearly above Ta=25°C in the proportion of 6.7mW/°C.
RECOMMENDED POWER SUPPLY VOLTAGE RANGE
Power supply voltage : 4.5--5.5V, 5V (typical)
ELECTRICAL CHARACTERISTICS (Vcc= 5V, Ta =25°C)
PB mode
CHARACTERISTIC SYMBOL CIR- TEST CONDITION MIN. TYP. MAX. UNIT
Power Supply Current lccp - - 26 32 40 mA
Voltage Gain 651 54 57 60
(SP Mode) Gsil Input (V15, V17, V21, V23) : dB
Voltage Gain Ge1 - f=1MHz, 0.3mup-p
(EP Mode) Ge2 57 60 63
Voltage Gain AGS - Gs1 -Gsil
Difference AGE Ge1-Ge2 -0.5 0 0.5 dB
ttl Input (v15, v17, v21, v23) :
Frequency Characteristic GF 1 - 0.3mVp-p - 1.5 0.5 2.5 dB
e Output ratio 8M/1M
Secondary Harmonic HDs2 Input (V15, 1/17, V21, V23) .
Distortion HD 1 - 0.3mvp-p - -45 -40 dB
e Power ratio 8M/4M
Voms1 Input (v15, v17, v21, v23) :
Maximum Out ut V f=1MHz
p oms2 - Level when thirdly harmonic 2.0 2.2 - vp.p
Voltage V . .
ome1 distortion of output reaches
5 2001-06-25
TOSHIBA TA1250F
CHARACTERISTIC SYMBOL CIR- TEST CONDITION MIN. TYP. MAX. UNIT
Crosstalk Between CRS12
Channels Input (V15, V17, V21, V23) : - -40 -38
(SP Mode) CRS21 - f=4MHz, 0.3mvp-p dB
Crosstalk Between CRE12 Level difference between
Channels channels. - - 34 - 32
(EP Mode) CRE21
CRS1E1
CRS1E2
CRS2E1 Input (v15, v17, v21, v23) :
Crosstalk Between CRS2E2 - f=4MH'z, th3mUp-p - -60 -40 dB
Modes CRE1S1 Level difference between
CREIS2 modes.
CRE2SI
CRE2S1
AVs1s2
AVs1e1
Output DC Offset AVs1e2 - DC difference between -15 0 15 mV
AV52e1 outputs
AV52e2
AVe1e2
. NS2 Measurement point 4MHz
Equated Input Noise NE1 - RBW : 10kHz - 0.1 - pl/rms
VENVS1 - Input : f=4MHz, 50mm, 0.4 0.7 1.0
ENV Det (SP Mode) VENVS2 - Input : f=4MHz, 1mvp-p 2.95 3.35 3.75 v
VENVE1 - Input : f=4MHz, 50/Np-i, 0.8 1.1 1.4
ENV Det (EP Mode) VENVE2 - Input : f=4MHz, 1m1/p-p 3.3 3.7 4.1
VCOM1 - Selects SP head; pin 11 low 0 0.1 0.3
ENV Comp VCOMZ - Selects EP head; pin 11 high 4.7 4.9 5.0 V
REC mode (Input resistance : 1.5km
CHARACTERISTIC SYMBOL CIR- TEST CONDITION MIN. TYP. MAX. UNIT
Power Supply Current Iccr - - 32 52 65 mA
Current Gain (SP Mode) 2:; 32.5 33 33.5
Gre1 - Input : f=1MHz, 500mVp-p dB
Current Gain (EP Mode) Gre2 29.1 29.6 30.1
. . Grfs2 Input I 500mVp-p
Frequency Characteristic Grfe1 - Output ratio 1M/8M -1.5 0 1.5 dB
Secondary Harmonic HDRs2 - Input : f=4MHz, 500mVp-p - -45 -40 dB
Distortion HDRe1 Output ratio 8M/4M
6 2001-06-25
TOSHIBA TA1250F
CONTROL SYSTEM
CHARACTERISTIC SYMBOL CIR- TEST CONDITION MIN. TYP. MAX. UNIT
Short SW ON Resistance Rin - - - 6 - n
Input Resistance rin - - - 600 - n
Rec Mute Mute1 - Mute ON (TP11) 4.2 5.0 V
Mute2 - Mute OFF (TP11) 0.0 3.4
R/P1 - Rec mode (TP10) 3.8 5.0
Rec/PB R/P2 - PB mode (TP10) 0.0 2.8 V
EPS1 - SP mode (V11) 0.0 0.9
SP/EP EPS2 - EP mode (v11) 1.7 5.0 V
SWP1 - LCH (v10) 0.0 1.5
LCH/HCH SWP2 - HCH (v10) 3.5 5.0
. NT1 - Normal mode (TP4) 0.0 0.4
Normal/Trick NT2 - Trick mode (TP4) 1.0 V
7 2001-06-25
TOSHIBA TA1250F
TEST CIRCUIT
L__..___J
10pF't
ENV. COMP Rec IN ENV. DET PB OUT Vcc
OUT OUT
8 2001-06-25
TOSHIBA TA1250F
PACKAGE DIMENSIONS
SSOP24-P-300-1.00 Unit : mm
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$1 $1 CD
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AL N CD
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Weight : 0.32g (Typ.)
9 2001-06-25
TOSHIBA TA125OF
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.
10 2001-06-25
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