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TA2154AFN
TOSHIBA Bipolar Linear Integrated Circuit Silicon Monolithic
TA2154AFN
1.5 V 1 Chip Tuner IC (for Digital Tuning System)
TA2154AFN is developed for 1.5 V headphone stereos. It incorporates all the functions of an FM/TV front end, AM/FM IF, and FM multiplex. The IC can be used for IF count digital tuning systems. Since the IC divides the buffer output frequency by 16 while suppressing the FM/TV local oscillation level, the IC can suppress unnecessary emission, facilitating conformance to the new FCC specifications (part 15).
Features
* * * FM/TV local oscillator level is low (Built-in auto level control circuit) Suitable for combination with digital tuning system, which is included IF counter. One terminal type AM/FM IF count output for IF counter of digital tuning system. * * * * AM: 450 kHz FM: 10.7 MHz Weight: 0.17 g (typ.)
One terminal type FM/TV local oscillator. Local oscillator buffer output terminal shared by AM, FM and TV * * * AM: 1/1 FM: 1/32 TV: 1/8
* * *
For adopting ceramic discriminator, it is not necessary to adjust the FM quad detector circuit. Built-in FM MPX VCO circuit. Low supply current (VCC = 1.2 V, Ta = 25C) Iccq (AM) = 5.0 mA (typ.) Iccq (FM) = 13.0 mA (typ.) Iccq (TV) = 13.5 mA (typ.)
* *
Operating supply voltage: VCC = 1.0~2.2 V (Ta = 25C) Monaural operating supply voltage: VCC = 0.95~2.2 V (Ta = 25C)
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TA2154AFN
Block Diagram
VT
OSC OUT L OUT VCC
MODE SW2
MODE SW1
IF REQ
IF OUT
30 RFVCC LPF2B MODE2 AM RF IN AM OSC OSC OUT MODE1 IF REQ TV FM OSC IF COUNT LPF2A
29
28
27
26
25
24
23
22
21
20
19
18
17 L OUT FM MPX LPF1 14 R OUT
TV RF OUT
FM RF OUT
AM BYPASS
16
SW
AM MIX 1/2
BUFF
AM OSC FM TV OSC OSC
BUFF
FM/AM/TV PW SW
1/8 or 1/16
LEVEL DET
BUFF IF BUFF
AM DET
TV RF
FM DET FM/TV MIX AGC
FM IF AM IF AF
FM RM
VCC
QUAD
DET OUT
AM MIX
AGC
TV RF IN
FM RF IN
RF GND
FM MIX
FM IF IN
1
2
3
4
5
6
7
8
GND
9
AM IF IN
10
11
12
MPX IN 13 MONO STEREO
15
BPF
R OUT
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Explanation of Terminals
Terminal voltage: Typical terminal voltage at no signal with the test circuit (VCC = 1.2 V, Ta = 25C)
Pin No. Terminal Voltage AM FM TV
Name
Function
Internal Circuit
TV RF OUT 30 1 TV RF IN Input of TV RF signal 100 9 1 RF GND 3 60 pF 0 0 0.1
FM RF OUT 29 2 FM RF IN Input of FM RF signal 100 9 2 RF GND 3 60 pF 0 0.1 0
3
RF-GND
GND (GND for TV/FM stage)
3/4
0
0
0
7 VCC TV/FM MIX
4
FM MIX
Output of TV/FM signal
220 W
3/4 4 3 RF GND
0.5
0.5
VCC 7 14 kW 5 AM MIX Output of AM IF signal 14 kW AM MIX GND 9 3 kW 5 0.6 3/4 3/4
IF 6 AGC AGC * AGC time constant is determined by external capacitor
FM AM 0 0 0
6
7
VCC
VCC (VCC for AM, FM IF, MPX stage)
3/4
1.2
1.2
1.2
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TA2154AFN
Pin No. Name Function Internal Circuit Terminal Voltage AM FM TV
VCC 7
8
FM IF IN
Input of FM IF signal Input impedance: 330 W (typ.)
8 330 W GND 9
3/4
0.7
0.7
9
GND
GND (GND for AM, FM IF, MPX stage)
3/4
0
0
0
VCC 7 3 k9 3 k9
10
AM IF IN
Input of AM IF signal Input impedance: 3 kW (typ.)
10
1.2
1.2
1.2
GND 9
11 11 QUAD FM QUAD detector 1.2 1.1 1.1
1 k9
7 VCC
9 GND
7 VCC Detector output Output impedance AM: 4 kW (typ.) FM: 500 W (typ.) FM DET. 9
12
DET OUT
34 kW 3.5 kW 500 W AM DET
12
0.6
0.8
0.8
7 VCC
13
MPX IN
Input of MPX 13
41 kW 5 k9
58.5 kW 3.4 k9
0.1
0.1
0.1
9 GND
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TA2154AFN
Pin No. Name Function Internal Circuit Terminal Voltage AM FM TV
LPF terminal for PLL phase detection. 14 LPF1 Connecting this terminal to GND sets the IC to forced Monaural mode. 3/4 14 3/4 3/4
15
R OUT
VCC 7
16
L OUT
9
VCC 7 17 LPF2A 13 100 kW 39 kW LPF terminals for synchronous detector 100 kW 39 kW 3/4 3/4 3/4
18
LPF2B
GND 9 17 18
10 k9
Output of Stereo signal
15/16
0.5
0.5
0.5
3/4
3/4
3/4
2 k9
2 k9
VCC 7
100 W
19
IF COUNT
Output of IF count signal AM: 450 kHz FM: 10.7 MHz
19 1.2 1.2 1.2
GND 9
Request sensitivity controller 3/4 2.4 k9 500 9 3/4 3/4
20
IF REQ
IF request switch
20
9 GND
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Pin No. Name Function Internal Circuit Terminal Voltage AM 21 40 k9 21 MODE1 Mode switch Standby: AM: FM: TV: MODE1 OPEN OPEN VCC VCC MODE2 OPEN VCC OPEN VCC 9 MODE SW 22 40 k9 3/4 1.2 1.2 FM TV
2 k9
2 k9
22
MODE2
1.2
3/4
1.2
1 k9
1 k9
RFVCC 26
VCC 7 23
23
OSC OUT
Local oscillation buffer output
FM PSC
AM PSC
1.0
1.0
1.0
RF GND 3
GND 9
24 26 RFVCC ALC
24
TV/FM OSC TV/FM OSC
1.2
1.2
1.2
3 RF GND
25 7 VCC 200 9 25 AM OSC AM OSC 200 9 1.2 1.2 1.2
9 GND 26 RFVCC VCC for TV/FM F/E stage 3/4 VCC 7 27 AM RF IN Input of AM RF signal AGC 0.9 3/4 3/4 3/4 3/4 3/4
27 28 AM BYPASS Referential voltage bypass terminal for AM RF GND 9 29 30 FM RF OUT FM RF turning circuit TV RF OUT TV RF turning circuit Cf. pin 2 Cf. pin 1 AGC 1 k9
28 AGC 0.9 3/4 3/4
1.2 1.2
1.2 1.2
1.2 1.2
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Application Note
1. Mode switch The IC controls the mode using pins 21 and 22. Switch conditions by modes are as listed below:
MODE1 (pin 21) Standby AM FM TV OPEN OPEN VCC VCC
MODE2 (pin 22) OPEN VCC OPEN VCC
To change mode, a 10 mA (typ.) current must flow from the IC to the pin connected to VCC. When the pin is open, set the pin voltage to 0.2 V or less (typ.).
2. Forced monaural switch Forced monaural switch over is done by pin 14. In case of the electrical switch over by transistor, set up VCE (saturation voltage between collector and emitter) 100 mV or less, otherwise there are some cases that it does not become forced monaural (VCO STOP) mode.
VCE (sat) VCC
14
3. IF count output
To output the signal for IF count, connect IF REQ (pin 20) to GND via RSEN and input the IF count sensitivity or larger.
Switch Condition Output Frequency MODE1 AM FM TV OPEN VCC VCC MODE2 VCC OPEN VCC Grounded via RSEN IF REQ 450 kHz 10.7 MHz 10.7 MHz 180 mVp-p 190 mVp-p 190 mVp-p 2 kW Output Voltage Output Impedance
4. Constant of LPF
Caputer range and Lock range is decided by constant of LPF, pin 14, 17, 18. Care should be taken in changing constant of LPF. Otherwise there are some cases that stereo characteristics may worse or IC may not operate stereo mode.
5. TV/FM local oscillator
This IC uses the same oscillator for TV and FM. The circuit structure is shown below. In TV mode, the IC inputs the local oscillator frequency to the mixer as-is. In FM mode, the IC halves the local oscillator frequency then inputs it to the mixer. This is how the IC receives TV and FM band frequencies.
24 TV MIX
23
OSC When TV is on 1/2 divider 1/4 divider TV FM
BUFF
FM MIX When FM is on
1/4 divider
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Maximum Ratings (Ta = 25C)
Characteristics Supply voltage Power dissipation Operating temperature Storage temperature Symbol VCC PD (Note 2) Topr Tstg Rating 4.5 550 -10~60 -55~150 Unit V mW C C
Note 2: Derated above Ta = 25C in the proportion of 4.4 mW/C.
Electrical Characteristics
Unless otherwise specified : VCC = 1.2 V, Ta = 25C, FM F/E: f = 98 MHz, fm = 1 kHz, Df = 75 kHz, Vin = 60dBmV EMF m FM IF: f = 10.7 MHz, fm = 1 kHz, Df = 75 kHz, Vin = 80dBmV EMF m AM: f = 1000 kHz, fm = 1 kHz, MOD = 30%, Vin = 60dBmV EMF m MPX: fm = 1 kHz, fp = 19 kHz
Characteristics Symbol ICC1 Supply current ICC2 ICC3 ICC4 Input limiting voltage FM F/E Local OSC buffer output voltage Input limiting voltage TV F/E Local oscillator buffer output Vin (lim) Vosc (Buff) FM Vin (lim) Vosc (Buff) TV Vin (lim) VOD (FM) S/N (FM) THD (FM) AMR (FM) VIF (FM) IFSENS (FM) Gv VOD (AM) S/N (AM) THD (AM) Vosc (Buff) AM VIF (AM) IFSENS (AM) 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 MOD = 30% 3/4 RSEN = 3.3 kW Vin = 32dBmV EMF 3/4 3/4 3/4 fosc = 14.5 MHz 3/4 RSEN = 3.3 kW Test Condition PW SW off AM mode, Vin = 0 FM mode, Vin = 0 TV mode, Vin = 0 Point where detection output is -3dB with Vin = 60dBmV EMF as reference fosc = 6.79375 MHz (217.4 MHz divided by 32) Point where detection output is -3dB with Vin = 60dBmV EMF as reference fosc = 26.3375 MHz (210.7 MHz divided by 8) Point where detection output is -3dB with Vin = 80dBmV EMF as reference 3/4 3/4 3/4 150 3/4 5.0 13.0 13.5 12 Min Typ. Max 20 7 17 17 3/4 3/4 dBmV EMF mVp-p dBmV EMF mVp-p dBmV EMF mVrms dB % dB mVp-p dBmV EMF mVrms mVrms dB % mVp-p mVp-p dBmV EMF mA Unit mA
150
200
14
200
Input limiting voltage Recovered output voltage FM IF Signal to noise ratio 1 Total harmonic distortion 1 AM rejection ration IF count output voltage IF count sensitivity Gain Recovered output voltage Signal to noise ratio 2 Total harmonic distortion 2 AM Local OSC buffer output voltage IF count output voltage IF count sensitivity
37 115 3/4 3/4 3/4 150 48 19 27 3/4 3/4 130 140 27
42 140 73 0.2 62 190 53 29 40 37 13 180 180 32
47 180 3/4 3/4 3/4 3/4 58 51 54 3/4 3/4 3/4 3/4 37
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Characteristics Input resistance Output resistance Voltage gain Channel balance Max composite signal input level Symbol RIN ROUT Gv C.B. Vin (max) Test Circuit 3/4 3/4 3/4 3/4 3/4 Test Condition 3/4 3/4 Vin = 150 mVrms (MONO) L + R = 90%, P = 10%, THD = 3% L+R= 135 mVrms, P = 15 mVrms fm = 100 Hz fm = 1 kHz fm = 10 kHz Min 3/4 3/4 -2.5 -2.0 3/4 3/4 30 3/4 3/4 3/4 3/4 1.0 3/4 3/4 3/4 Typ. 26 10 -0.5 0 250 40 40 40 0.2 0.4 5.7 3.2 2.5 14 70 Max 3/4 3/4 +1.5 +2.0 3/4 3/4 3/4 3/4 3/4 3/4 8.5 3/4 3/4 3/4 3/4 % dB Unit kW dB dB mVrms
Separation MPX MONO Total harmonic distortion ST indicator sensitivity ST ON OFF
SEP.
3/4
THD (MONO) THD (ST) ST (ON) ST (OFF) VH C.R. S/N3
3/4 3/4 3/4 3/4 3/4 3/4 3/4
Vin = 150 mVrms (MONO) L + R = 135 mVrms, P = 15 mVrms 3/4 To indicator turn OFF from turn ON P = 15 mVrms Vin = 150 mVrms (MONO)
mVrms mVrms mVrms % dB
Stereo indicator hysteresis Capture range Signal to noise ratio
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Test Circuit
RFVCC 220 mF VCC2 = 5 V 68 kW DET 2.4 kW OUT QUAD DET OUT MPX IN LPF1 R OUT 2.2 kW 68 kW 10 CF2 11 CR 12 13 10 mF 14 0.47 mF 15 4.7 mF 680 pF 0.068 mF 1 kW PHASE FM IF IN 270 W MONO/ST GND/OPEN MPX IN 2.2 mF R OUT 4700 pF OSC OUT 0.033 mF IF REQ fvco L OUT 22 kW 0.01 mF MODE SW fvco MON IF OUT VCC
AM RF IN
75 W
0.022 mF
2 kW
VCC T1 L3 10 pF 1 kW MODE2 0.01 mF MODE1 3.3 kW 4.7 mF 4700 pF
RFVCC
L2
L1
30 RFVCC LPF2B MODE2 AM OSC OSC OUT MODE1 IF REQ TV FM OSC IF COUNT LPF2A L OUT
TV RF OUT
FM RF OUT
AM BYPASS
AM RF IN
29
0.033 mF
2.7 mH
28
27
26
25
24
23
22
21
20
19
PILOT 0.1 mF 18 17 16
TA2154AFN
BPF: GTVS05 Soshin Electric Co., Ltd. CF1: SFE10.7MA5 Murata Co. Ltd. CF2: PFS450A Murata Co. Ltd. CR: CDALA10M7GA113 - BO Murata Co. Ltd.
AM MIX
AGC
VCC
TV RF IN
FM RF IN
RF GND
FM MIX
FM IF IN
4.7 mF
BPF CF1
0.033 mF
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0.022 mF
TV/FM RF IN
1
2
3
4
5
6
7
8
GND
9
AM IF IN
TA2154AFN
Coil Data
Coil Test Frequency L (mH) 3/4 Co (pF) 3/4 Q0 1-2 79 3/4 2-3 3/4 Turns 1-3
2 1 2
1 4 1 4
4-6 3/4
Wire (mmf) TOKO 666SNF-305NK TOKO 666SNF-381NK TOKO 666SNF-381NK TOKO 5PNR-4957Y
L1 FM RF
100 MHz
0.16UEW
L2 TV RF L3 TV/FM OSC T1 AM OSC
100 MHz
3/4
3/4
73
3/4
3/4
1
3/4
0.16UEW
100 MHz
3/4
3/4
73
3/4
3/4
1
3/4
0.16UEW
796 kHz
268
3/4
65
19
95
3/4
3/4
0.05UEW
L1: FM RF
L2: TV RF
L3: TV/FM OSC Pin 25
T1: AM OSC
3
3
3
3 2
4
1
1
1 VCC
1
6
(BOTTOM VIEW)
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TA2154AFN
Package Dimensions
Weight: 0.17 g (typ.)
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TA2154AFN
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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