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TA2149BN/BFN
TOSHIBA Bipolar Linear Integrated Circuit Silicon Monolithic
TA2149BN,TA2149BFN
3 V AM/FM 1 Chip Tuner IC (for Digital Tuning System)
TA2149BN, TA2149BFN are AM/FM 1 chip tuner ICs, which are designed for portable Radios and 3 V Head phone Radios. This is suitable for Digital Tuning System Applications. FM Local Oscillation Voltage is set up low relativity, for NEW FCC.
TA2149BN
Functions
* * For NEW FCC. Suitable for combination with Digital Tuning System which is included IF Counter. * * Adjustable for IF count output sensitivity by external resistance of pin 17 (FM only).
TA2149BFN
One terminal type AM/FM IF count output for IF counter of Digital Tuning System. * * FM: 1.3375 MHz (1/8 dividing) AM: 450 kHz
* * * *
Built-in Mute Circuit for IF count output. For adopting ceramic Discriminator, it is not necessary to adjust the FM Quad Detector Circuit. Built-in FM MPX VCO circuit. Built-in one terminal type AM/FM Local Oscillator Buffer Output for Digital Tuning System Applications. * Built-in 1/16 Pre-scaler for FM Local OSC Buffer. Built-in AM Low cut circuit. Low supply current. (VCC = 3 V, Ta = 25C) ICCq (FM) = 13 mA (Typ.) ICCq (AM) = 8.5 mA (Typ.) Weight SDIP24-P-300-1.78: 1.2 g (Typ.) SSOP24-P-300-0.65A: 0.14 g (Typ.)
* *
*
Operating Supply voltage range: VCC = 1.8~7 V (Ta = 25C)
Note 1: Handle with care to prevent devices from deteriorations by static electricity.
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TA2149BN/BFN
Block Diagram
H: MONO L: ST
H: AM L: FM
VT
OSC BUFF OUT PSC SW IF OUT OPEN: 1/1 VCC: 1/16 IF REQ VCC
FM RF RFout VCC 24 23
AM RFin 22
FM OSC 21
AM OSC 20
OSC OUT 19
ST LED 18
IF REQ 17
DET OUT 16
MPX IN 15
LPF1 14
LPF2 13
AM OSC FM OSC
BUFF
IF REQ ST SW
AF AF BUFF VCO DECODE DIVIDE
1/1 or 1/16
BUFF
IF BUFF 1/8 AM DET FM DET SM/MO FM/AM
LEVEL DET
AM MIX
FMRF
FM MIX
AGC AMIF FMIF MUTE
1 FM ANTENNA RF GND BFP
2 FM RFin
3
AM LOW CUT
4 MIX OUT
5 VCC
6 AM IF IN
7 FM IF IN
8 GND
9 AGC
10 11 12 QUAD R-OUT L-OUT
R-OUT
L-OUT
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Explanation of Terminals
(Terminal Voltage: Typical terminal voltage at no signal with test circuit, VCC = 3 V, Ta = 25C)
PIN No. Characteristic Internal Circuit Terminal Voltage (Typ.) (V) AM 1 RF GND (GND for FM RF stage) 3/4 0 FM 0
24
2
FM-RFin 2 1 kW 60 pF
0
0.8
RF GND 1
AM DET 3 AM LOW CUT
22 kW 1.0 3 3/4
22 kW
GND 8
VCC FM MIX 4 MIX OUT
5 4
3.0 AM MIX RF GND 1 8 GND
3.0
5
VCC (VCC for AM, FM IF, MPX)
3/4
3.0
3.0
3 kW
6
AM IF IN
6
3 kW
2.3
2.5
GND 8
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TA2149BN/BFN
PIN No. Characteristic Internal Circuit Terminal Voltage (Typ.) (V) AM FM
7
FM IF IN
330 W
VCC 5
7
3.0
3.0
GND 8
8
GND (GND for AM, FM IF, MPX)
3/4
0
0
9
AGC 100 kW 9
20 kW
VCC 5
0
0
GND 8
10 VCC 5
10
QUAD
2.5
2.2
GND 8
VCC 5
11 12
R-OUT L-OUT
11/12
1.2 5 kW
1.2
GND 8
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TA2149BN/BFN
PIN No. Characteristic Internal Circuit Terminal Voltage (Typ.) (V) AM FM
13 AM/FM SW
13
LPF2 * LPF terminal for phase detector * Bias terminal AM/FM SW circuit V13 = GND (R) AM V13 = OPEN (R) FM
0
2.2
8 GND
14 DC AMP LPF1 * LPF terminal for synchronous detector * VCO stop terminal V14 = GND (R) VCO STOP
14
0.7
2.4
8 GND
55 kW 15 15 MPX IN 0.7 0.7
GND 8
VCC 5
AM
FM
16
DET OUT
750 W
16
1.0
0.9
a
b
GND 8 a b LOW (R) FM, HIGH (R) AM LOW (R) AM, HIGH (R) FM
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TA2149BN/BFN
PIN No. Characteristic Internal Circuit Terminal Voltage (Typ.) (V) AM FM
5 VCC
17
IF REQ
3/4
3/4
17
19 kHz 18
18
ST LED
3/4
3/4
GND 8
RF VCC 23 200 W 19 OSC OUT PSC SW RF-GND 2
19
2.8
2.7
20 VCC 5
20
AM OSC
3.0
3.0
GND 8
21 RF VCC 23
21
FM OSC
3.0
3.0
GND 1
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TA2149BN/BFN
PIN No. Characteristic Internal Circuit Terminal Voltage (Typ.) (V) AM FM
VCC 5
AGC 22
22
AM RFin
3.0
3.0
GND 8
23 24
RF VCC (VCC for FM RF stage) FM RFout cf. pin 1
3/4
3.0 3.0
3.0 3.0
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TA2149BN/BFN
Application Note
1. AM Low-Cut Circuit
* The AM Low-Cut action is carried out by the bypass of the high frequency component of the positive-feedback signal at the AF AMP stage. The external capacitor: C3 by-pass this component. The cut-off frequency fL is determined by the internal resistance 22 kW (Typ.) and the external capacitor C3 as following;
fL = 1 2 p 22 103 C3 (Hz)
22 kW 22 kW 3 R C3
*
* *
In the case of the AM Low-Cut function is not needed, set up the value of C3 over 1 mF. In the condition of C3 > 1 mF, the frequency characteristic has flat response at the low frequency. = It is possible to reduce the recovered output level at AM mode, by additional resistance between the pin 3 and GND line.
2. FM Detection Circuit
For the FM detection circuit, detection coil is able to use instead of ceramic discriminator. Recommended circuit and recommended coil are as follows. (In this case, please take care that Vin (lim.) falls a little.)
VCC VCC 3 15 P 2 1 Pin 10 6 4
10
Test Frequency 10.7 MHz
Co (pF) 51
Qo 1-2 45 3/4
Turns 2-3 3/4 1-3 30 4-6 3/4
Wire (mmf) 0.08UEW
Reference Toko Co., Ltd. 600BEAS-10018Z
3. FM/AM switch and forced monaural switch.
* * FM/AM switchover and stereo/forced monaural switchover are done by pin 13 and pin 14. FM/AM switch (pin 13) V13: Low (Active Low, Vth = 0.2 V (Typ.), Ith 30 mA (Typ.) (R) AM V13: OPEN (R) FM Stereo/forced monaural switch (pin 14) V14: Low (Active Low, Vth = 0.2 V (Typ.), Ith 30 mA (Typ.)(R) Forced Monaural V14: OPEN (R) Stereo
*
VCE (sat) VCC
VCE (sat)
14
13
8
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TA2149BN/BFN
4. VCC Line
This ICs have two voltage supply terminals, VCC (for AM, FM IF, MPX stage) and RF VCC (for FM RF stage). Set up the potential difference between VCC and RF VCC 0.4 V (typ.) or less, otherwise there is the case that this IC doesn't operate normally.
5. How to control the Divider of FM OSC.
RF VCC R AM OSC FM OSC
buff
SW8 19 buff out 1/1 or 1/16
buff
Divider of FM OSC ON/OFF switching is controlled by external pull-up resistor of pin 19. In case of Divider of FM OSC is used, it is necessary to set up the value of R under 470 W (typ.). When R is over 470 W, it is feared that Divider is not operating. (At this time, buffer output frequency is equal to FM OSC frequency.) Which ever Divider of FM OSC is used or not, AM OSC buffer frequency and output level is same.
Mode FM
SW8 OPEN ON OPNE
Output Frequency 1/1 FM OSC 1/16 FM OSC 1/1 FM OSC
Output Level (Typ.) 35 mVrms 110 mVrms 75 mVrms
AM ON
6. How to adjust the IF Count Output Sensitivity
IF count output sensitivity can be adjusted by changing the value of external resistance at pin 17. This ICs have IF signal level detector in pin 9. When DC voltage of pin 9 is high than threshold, IF count output signal come out from the pin 17. And this threshold is controlled by value of external resistance at pin 19.
65
350 VIF (FM) 300
(FM)
60
sens
55 50 IF sens (FM) 45 40 VCC = 3 V f = 10.7 MHz Df = 75 MHz 0.5 1 1.5 2 2.5 3
250 200
IF count output sensitivity
150 100
35 30 0
50 0 3.5
External resistance of pin-17
(k9)
IF count output voltage VIF (FM)
IF
mVp-p
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TA2149BN/BFN
Maximum Ratings (Ta = 25C)
Characteristics Supply voltage LED current LED voltage TA2149BN Power dissipation TA2149BFN Operating temperature Storage temperature Symbol VCC ILED VLED PD (Note 2) Topr Tstg Rating 8 10 8 1200 mW 500 -25~75 -55~150 C C Unit V mA V
Note 2: Derated above Ta = 25C in the proportion of 9.6 mW/C for TA2149BN of 4 mW/C for TA2149BFN.
Electrical Characteristics (Unless otherwise specified, Ta = 25C, VCC = 3 V,
F/E: f = 98 MHz, fm = 1 kHz FM IF: f = 10.7 MHz, Df = 75 kHz, fm = 1 kHz AM: f = 1 MHz, MOD = 30%, fm = 1 kHz MPX: fm = 1 kHz)
Symbol ICC (FM) ICC (AM) Input limiting voltage F/E Local OSC buffer output voltage 1 Local OSC buffer output voltage 2 Input limiting voltage Recovered output voltage Signal to noise ratio Total harmonic distortion FM IF AM rejection ration IF count output frequency IF count output voltage IF count output sensitivity Gain Recovered output voltage Signal to noise ratio Total harmonic distortion AM Local OSC buffer output voltage IF count output voltage IF count output sensitivity AMR fIF (FM) VIF (FM) IF sens (FM) GV VOD S/N THD VOSC (buff) AM VIF (AM) IF sens (AM) R17 Vin (lim) VOSC (buff) FM1 VOSC (buff) FM2 Vin (lim) IF VOD S/N THD Test Circuit 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 Test Condition Vin = 0, FM mode Vin = 0, AM mode Vin = 60dBmV EMF, -3dB limiting fOSC = 108.7 MHz fOSC = 6.79375 MHz SW8: ON Vin = 80dBmV EMF, -3dB limiting Vin = 80dBmV EMF Vin = 80dBmV EMF Vin = 80dBmV EMF Vin = 80dBmV EMF Vin = 80dBmV EMF, SW7: ON Vin = 80dBmV EMF, SW7: ON SW7: ON Vin = 27dBmV EMF Vin = 60dBmV EMF Vin = 60dBmV EMF Vin = 60dBmV EMF fOSC = 1.45 MHz Vin = 60dBmV EMFSW7: ON SW7: ON FM mode AM mode Min 3/4 3/4 3/4 23 75 37 200 3/4 3/4 3/4
Characteristic Supply current
Typ. 13 8.5 10 35 110 42 250 75 0.3 60
Max 16.5 11.0 3/4 3/4 3/4 47 300 3/4 3/4 3/4
Unit mA
dBmV EMF mVrms mVrms dBmV EMF mVrms dB % dB MHz mVp-p dBmV EMF mVrms mVrms dB % mVrms mVp-p dBmV EMF
1.3373 1.3375 1.3377 250 42 20 60 3/4 3/4 55 250 33 3/4 3/4 290 47 38 85 41 0.7 75 290 38 0.75 15.5 330 52 70 108 3/4 3/4 3/4 350 43 3/4 3/4
Pin 17 output resistance
kW
10
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TA2149BN/BFN
Characteristic Input resistance Output resistance Max. composite signal input voltage Symbol RIN ROUT Vin MAX (Stereo) Test Circuit 3/4 3/4 3/4 Test Condition 3/4 3/4 L + R = 90%, P = 10%, SW3: LPF ON fm = 1 kHz, THD = 3% L+R= 180 mVrms, P = 20 mVrms SW3: LPF ON Vin = 200 mVrms L+R = 180 mVrms, P = 20 mVrms, SW3: LPF ON Vin = 200 mVrms Vin = 200 mVrms Pilot input (19 kHz) To LED turn off from LED turn on P = 15 mVrms Vin = 200 mVrms Vin = 200 mVrms fm = 100 Hz fm = 1 kHz fm = 10 kHz Min 3/4 3/4 3/4 3/4 35 3/4 3/4 3/4 -2.7 -1.5 3/4 5 3/4 3/4 3/4 3/4 Typ. 55 5 700 45 45 45 0.3 0.3 -1.2 0 10 8 2 8 80 80 Max 3/4 3/4 3/4 3/4 3/4 3/4 3/4 % 3/4 0.2 1.5 14 3/4 3/4 3/4 3/4 3/4 mVrms dB dB dB Unit kW kW mVrms
Separation
Sep.
3/4
Monaural MPX Total harmonic distortion Stereo Voltage gain Channel balance Stereo LED sensitivity ON OFF
THD (Monaural) THD (Stereo) GV C.B. VL (ON) VL (OFF) VH C.R. S/N MUTE
3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4
Stereo LED hysteresis Capture range Signal noise ratio Muting attenuation
mVrms % dB dB
Coil Data
Coil No. Test Freq. L (mH) 3/4 3/4 268 3/4 Co (pF) 3/4 3/4 3/4 470 Qo 1-2 79 76 65 60 3/4 3/4 19 3/4 2-3 3/4 3/4 95 3/4 Turns 1-3
2 1 2
1-4 3/4 3/4 3/4 3/4
4-6 3/4 3/4 3/4 7
Wire (mmf) 0.16UEW 0.16UEW 0.05UEW 0.05UEW
Reference Toko Co., Ltd. 666SNF-305NK Toko Co., Ltd. 666SNF-306NK Toko Co., Ltd. 5PNR-5146Y Toko Co., Ltd. 5PLG-5147X
L1 FM RF L2 FM OSC T1 AM OSC T2 AM IFT
100 MH 100 MH 796 kH 455 kH
2 3/4 109
L1: FM RF
L2: FM OSC Pin 20
T1: AM OSC FM C.F. 3 2 4
T2: AM IFT AM C.F. 3 2 4
3
3
1
1 VCC
1
6 Pin 4
1
6 VCC
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TA2149BN/BFN
Test Circuit
110 kW
5V 2SC1815
110 kW
2.2 mF
VDD = 8 V 100 kW
2.4 kW DET OUT 0.022 mF
AM-RF IN 75 W 75 W
2 kW
OSC OUT 0.01 mF 400 W
100 kW
0.022 mF
2SC1923
10 mF MPX IN 3 kW IF OUT
Vin
0.01 mF
VT
2.2 kW
1 mF 3.3 kW 0.1 mF
VCC 220 mF SW 4 SW 3 4.7 kW LPF
330 pF
47 kW 1000 pF 1SV101
470 pF 1SV149 47 kW
47 kW 1SV101
SW 8 3.3 kW 470 W 560 W
2.7 mH
L1
T1 L2
100 pF
SW 7
0.1 mF 14 LPF1
SW 5
24 23 22 21 20 FM RFout RF VCC AM RFin FM OSC AM OSC
19 OSC OUT
18 ST LED
17 16 15 IF REQ DET OUT MPX IN
13 LPF2
TA2149BN/BFN
RF GND 1
FM RFin 2
AM LOW CUT MIX OUT 3 4 0.47 mF
VCC 5
AM IF IN FM IF IN 6 7
GND 8
AGC 9 4.7 mF
QUAD 10
R-OUT 11 SW 2
L-OUT 12
0.033 mF CF1 T2 CF2
1 mF
CR
330 W
BPF
FM-RF IN 75 W
FM-IF IN 270 W 50 W
SW 1
Vin
Vin
BPF : GFWB3 (Soshin Electric Co., Ltd.) CF1 : SFU450B (Murata Co., Ltd.) CF2 : SFE10.7MA5 (Murata Co., Ltd.) CR : CDALA10M7GA100A-B0 (Murata Co., Ltd.)
0.01 mF
12
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0.01 mF
TA2149BN/BFN
Package Dimensions
Weight: 1.2 g (typ.)
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TA2149BN/BFN
Package Dimensions
Weight: 0.14 g (typ.)
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TA2149BN/BFN
RESTRICTIONS ON PRODUCT USE
000707EBA
* TOSHIBA 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.. * The 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. * The products described in this document are subject to the foreign exchange and foreign trade laws. * The 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. * The information contained herein is subject to change without notice.
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2001-12-21

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