Document
TA2047N / F
TOSHIBA Bipolar Linear Integrated Circuit Silicon Monolithic
TENTATIVE TA2047N,TA2047F
Filter IC For NICAM
The TA2047N, TA2047F is an analog filter IC for NICAM. Using the TA2047N, TA2047F in combination the TB1212N, TB1212F (single chip NICAM system), it is possible to construct a NICAM decoder system with less external parts.
Features
· Built−in CR for LPFs and output (differential) amplifiers for the left and right channel.
· Built−in audio SW and possible to FM signal input dynamic range up. (VCC = 9V)
· It is possible to apply an analog de−emphasis circuit. · 2Vrms output. (VCC = 9V) · 6dB up SW. (9V operation) · Built−in analog mute circuit. · 9V power supply operation. (5V, 12V possible)
Weight SDIP24−P−300−1.78 : 1.22g (typ.) SSOP24−P−300−1.00 : 0.32g (typ.)
1 2002-10-30
Block Diagram Terminal Connection
TA2047N / F
2 2002-10-30
Terminal Function Terminal List (pin24 FP, SDIP24)
Pin No.
Pin Name
I/O
1 CR1 O
2 CR2
I
3 OUTR O
4 NFR
I
5 FMR
I
6 VREF O
7 REF ―
8 FML
I
9 NFL
I
10 OUTL
O
11 CL2
I
12 CL1
O
13 VCCL
―
14 Mute
I
15 GNDSUB 16 LI 17 LI 18 GNDL 19 GNDR 20 RI 21 RI
― I I ― ― I I
22 Gain SW
I
23 FM / NICAM 24 VCCR
I ―
TA2047N / F
Function
R channel LPF input terminal. R channel FM / NICAM select amp. forward input terminal. (NICAM) R channel FM / NICAM select amp. output terminal. R channel FM / NICAM select amp. reverse input terminal. R channel FM / NICAM select amp. forward input terminal. (FM) 1 / 2 VCC reference voltage output terminal. (to be open) L channel FM / NICAM select amp. forward input terminal. (FM) L channel FM / NICAM select amp. reverse input terminal. L channel FM / NICAM select amp. output terminal. L channel FM / NICAM select amp. forward input terminal (NICAM) L channel LPF input terminal. L channel power supply. Mute control signal input terminal. (L: Mute off, H: Mute on) GND L channel forward input terminal. L channel reverse input terminal. L channel GND. R channel GND. R channel reverse input terminal. R channel forward input terminal. Gain control. (L: +0dB, H: +6dB) FM / NICAM select terminal. (L: FM, H: NICAM) R channel power supply.
3 2002-10-30
Terminal Interface Circuit
TA2047N / F
4 2002-10-30
TA2047N / F
Maximum Ratings (Ta = 25°C)
Characteristic
Symbol
Rating
Unit
Supply voltage Storage temperature
Power dissipation
VCC
12.6 V
Tstg
-55~150
°C
1300 (*1) PD mW
400 (*2)
(*1) When using the device at above Ta = 25°C, decrease the power dissipation by 3.6mW for each increase of 1°C. [TA2047N (24pin SDIP package) ]
(*2) When using the device at above Ta = 25°C, decrease the power dissipation by 10.4mW for each increase of 1°C. [TA2047F (24pin SSOP package) ]
Recommendable Operating Condition
Characteristic
Supply voltage Operating temperature
Symbol
VCC Topr
Test Condition
― ―
Min. Typ. Max. Unit
4.5 ― 12.6 V -25 ― 65 °C
Electrical Characteristics (tentative)
(unless otherwise specified, VCC = 9V, 1 / 2VDD = 2.5V, OSC1 = OSC2 = 1.17Vrms (1kHz) SW1~SW8 = a, 400Hz HPF, 30kHz LPF, Ta = 25°C)
Characteristic
Consumption current Noise distortion factor S/N
Symbol
ICCQ THD + N
S/N
Test Circuit
―
―
Test Condition
SW1 = SW2 = b ―
――
Min. Typ. Max. Unit
11.6 ― 82
15.6 -79 86
21.0 -74 ―
mA dB dB
Gain
Gain (15k)
Gain (70k)
Gain (UK)
Cross talk
High level input voltage (1)
Low level input voltage (2)
High level input voltage (3)
Low level input voltage (4)
GV GV (15k) GV (70k) GV (UK)
CT
(*1) GV Vth (H) (*1) GV Vth (L) (*2) F / N Vth (H) (*2) F / N Vth (L)
― OSC1 = 460mVrms
― f = 15kHz, OSC1 = 460mVrms
― f = 70kHz, OSC1 = 460mVrms
― SW4 = b, OSC1 = 230mVrms
―
SW2 = b (L-ch→R-ch), SW1 = b (R-ch→L-ch)
――
――
――
――
2.60 1.25 ― 8.6
4.24 3.45 -31.0 10.28
― ― -12.7 ―
― -85.0 -80.8
4.0 ― ―
― ― 1.0
4.0 ― ―
― ― 1.0
dB dB dB dB dB
V
V
V
V
High level input voltage (5)
(*3) Mu Vth (H)
―
―
4.0 ― ―
V
Low level input voltage (6)
(*3) Mu Vth (L)
―
―
― ― 1.0 V
(*1) For gain SW (pin 22) (*2) For FM / NICAM (pin 23) (*3) For mute (pin 14)
5 2002-10-30
Test Circuit
TA2047N / F
(Note 1) It is require to connect ceramic or film condenser not to receive temperature characteristics. (Note 2) Pin 7 to be open. (Don't connect to GND or VCC). (Note 3) It is require to other wring GND line of pin 18, 19 and 15. (Note 4) C24 connect between pin 6 and 15.
6 2002-10-30
Application Circuit 1 (digital de-emphasis VCC = 9V)
TA2047N / F
(Note 1) It is require to connect ceramic or film condenser not to receive temperature characteristics. (*1) (Note 2) Pin 7 to be open. (Don't connect to GND or VCC) (Note 3) It is require to other wring GND line of pin 18, 19 and 15. (Note 4) C24 connect between pin 6 and 15.
7 2002-10-30
Application Circuit 2 (analog de-emphasis VCC = 9V)
TA2047N / F
(Note 1) It is require to connect ceramic or film condenser not to receive temperature characteristics. (*1) (Note 2) Pin 7 to be open. (Don't connect to GND or VCC) (Note 3) It is require to other wring GND l.