tb2946hq TOSHIBA Semiconductor CORPORATION, tb2946hq Datasheet
tb2946hq
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tb2946hq Summary of contents
Page 1
... TOSHIBA Bi-CMOS Linear Integrated Circuit Silicon Monolithic 49 W × 4-ch BTL Audio Power IC The TB2946HQ is a four-channel BTL power amplifier for car audio applications. This IC has a pure complementary P-ch and N-ch DMOS output stage, offering maximum output power (P It includes a standby switch, mute function and various protection features ...
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... Some of the functional blocks, circuits or constants may be omitted from the block diagram or simplified for explanatory purposes Ripple TAB V V CC2 CC1 IN1 11 IN2 12 13 Pre-GND IN3 15 16 AC-GND IN4 14 4 Stby 22 Mute Offset/short 2 TB2946HQ +B Out1 (+) 9 PW-GND1 Out1 (−) 7 Out2 (+) 5 PW-GND2 Out2 (−) 3 Out3 (+) 17 PW-GND3 Out3 (−) 19 Out4 (+) 21 ...
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... Figure 1 Setting Pin 4 High Turns on 2 Relay V CC – Conventional Method – From microcontroller Battery Standby V CC – Using the Standby Switch – Figure 2 Standby Switch 3 TB2946HQ kΩ 4 ≈ Bias filter network Power Battery From microcontroller Battery 2009-01-29 ...
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... 13 kHz Ω 20dBm − 400 kHz −40 −60 −80 Mute On/Off −100 control −120 0 0.5 Pin 22 control voltage: V Figure 4 Mute Attenuation − TB2946HQ ATT – V MUTE 1 1.5 2 2.5 3 (V) MUTE (V) MUTE 2009-01-29 ...
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... GND Voltage at (A) (pin 25) GND Voltage at (B) (LPF output) GND − bias TB2946HQ Positive DC offset (+) (caused (normal DC voltage) CC Negative DC offset (−) (caused LPF To a microcontroller B The microcontroller shuts down the system if the output is lower than the specified voltage ...
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... Layer Short Detection The TB2946HQ may be properly connected to a load such as a 4-Ω speaker, but one of the speaker lines may be shorted to ground through a low-impedance path. The TB2946HQ can detect such a condition. The negative (−) speaker connection is shorted to ground through a low-impedance path due to some irregularities. ...
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... Pop Noise Suppression Since the TB2946HQ uses the AC-GND pin (pin 16) as the common input reference voltage pin for all amplifiers, the ratio of the input capacitance (C1) to the AC-to-GND capacitance (C6) should be 1:4. Also, if power is removed before C1 and C6 are completely charged, pop noise will be generated because of unbalanced DC currents ...
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... V22 = 0 ⎯ POWER ⎯ POWER: OFF SB ⎯ MUTE: OFF M ⎯ kΩ MUTE: ON TB2946HQ Min Typ. Max ⎯ 160 320 ⎯ ⎯ 49 ⎯ ⎯ 43 ⎯ ⎯ 70 ⎯ ⎯ 26 ⎯ ⎯ 0.007 0.07 25 ...
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... Ripple TAB V V CC2 CC1 IN1 11 IN2 12 13 Pre-GND IN3 15 16 AC-GND IN4 14 4 Stby 22 Mute Offset/short 9 TB2946HQ Min Typ. Max ⎯ 85 100 ⎯ ⎯ 250 ±1.0 ±1.5 ±2.0 ⎯ ⎯ 3.3 s ⎯ 100 500 +B Out1 (+) 9 PW-GND1 = 4 ohm Out1 (− ...
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... kHz : 400 kHz 1 0.5 10 kHz 0.3 0.1 0.05 0.03 1 kHz 0. 100 Hz 0.005 0.003 0.001 30 50 100 0.1 0.3 10 TB2946HQ THD – P (ch2) OUT : 400 kHz 0 100 Output power P (W) OUT THD – P (ch4) OUT : 400 kHz 0 ...
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... Ω kHz 13 Filter 400 kHz 0.5 0.3 0.1 0.05 0.03 0.01 0.005 0.003 0.001 30 50 100 0.1 0.3 11 TB2946HQ THD – P (ch2) OUT 13 0 100 Output power P (W) OUT THD – P (ch4) OUT 13 0 ...
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... 13 Ω Vrip = 0.775 Vrms (0dBm) −20 −40 −60 −80 100K 10 100 frequency f (Hz) 12 TB2946HQ THD – 10K 100K R.R. – f 3ch 4ch 2ch 1ch 1K 10K 100K 2009-01-29 ...
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... Input voltage V 40 100 Input voltage V 120 100 Ambient temperature Ta (°C) 13 TB2946HQ V – P (ch2) IN OUT 1 kHz 10 kHz 100 Hz 20 kHz 13 Ω No filter (Vrms – P (ch4) IN OUT 1 kHz ...
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... V OUT = 0.775 Vrms (0dBm 620 Ω −20 −40 −60 CT (4-2) CT (3-4) −80 100 9 100 TB2946HQ C.T. – f (ch2) CT (2-3) CT (2-1) CT (2-4) 100 100 k frequency f (Hz) C.T. – f (ch4) CT (4-1) CT (4-3) 100 100 k frequency f (Hz) P – P ...
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... HZIP25-P-1.00F (SPP25) package. Note 5: This test board is designed to be used for several power amplifiers. Therefore, devices that are externally connected to the power amplifier to be tested must be checked before setting up the test board. Front Side Back Side 15 TB2946HQ 2009-01-29 ...
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... Package Dimensions Weight: 7.7 g (typ.) 16 TB2946HQ 2009-01-29 ...
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... R-type flux (2) Use of Sn-3.0Ag-0.5Cu solder Bath · solder bath temperature = 245°C · dipping time = 5 seconds · the number of times = once · use of R-type flux 17 TB2946HQ 2009-01-29 ...
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... Please contact your TOSHIBA sales representative for details as to environmental matters such as the RoHS compatibility of Product. Please use Product in compliance with all applicable laws and regulations that regulate the inclusion or use of controlled substances, including without limitation, the EU RoHS Directive. TOSHIBA assumes no liability for damages or losses occurring as a result of noncompliance with applicable laws and regulations. 18 TB2946HQ 2009-01-29 ...