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TS4601BEIJTSTN/a1000avaiHigh performance stereo headphone amplifier with capaless outputs and I2C bus interface


TS4601BEIJT ,High performance stereo headphone amplifier with capaless outputs and I2C bus interfaceapplications. It has the same uses as The traditionally used output-coupling capacitors the TS4601 ..
TS461C ,OUTPUT RAIL TO RAIL OPERATIONAL AMPLIFIERSABSOLUTE MAXIMUM RATINGSSymbol Parameter Value UnitV Supply Voltage - note 1 12 VCCDifferential Inp ..
TS461CD ,OUTPUT RAIL TO RAIL OP-AMPSABSOLUTE MAXIMUM RATINGS Symbol Parameter Value Unit1)V12 VCC Supply voltage 2)V ±VVid Differe ..
TS461CDT ,OUTPUT RAIL TO RAIL OP-AMPSTS461TS462TS464OUTPUT RAIL TO RAIL OPERATIONAL AMPLIFIERS ■ HIGH DYNAMIC
TS461CLT ,OUTPUT RAIL TO RAIL OP-AMPSFEATURES PIN CONNECTIONS (top view) ■ LARGE OUTPUT SWING(±2.4V @ V = ±2.5V)CCTS461CLT■ LOW NOIS ..
TS462C ,OUTPUT RAIL TO RAIL OPERATIONAL AMPLIFIERSAPPLICATIONS.Sound cards. TS462CN-TS462CD-TS462CPTPDA.CD players.Recording equipmentsVOutput 1 1 8 ..
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UA709PC ,HIGH-PERFORMANCE OPERATIONAL AMPLIFIERELECTRICAL CHARACTERISTICS: TA " +25''C, 19 V < VS < t15 V unless otherwise specified. CHARACTER ..
UA709TC ,High-performance operational amplifierapplications and for the generation of special linear and nonlinear transfer functions. ABSOLUT ..
UA709TC ,High-performance operational amplifierELECTRICAL CHARACTERISTICS: TA " +25''C, 19 V < VS < t15 V unless otherwise specified. CHARACTER ..


TS4601BEIJT
High performance stereo headphone amplifier with capaless outputs and I2C bus interface
July 2008 Rev 2 1/28
TS4601B

High performance stereo headphone amplifier
with capacitorless outputs and I2 C bus interface
Features
Power supply range: 2.9 V to 5.5V 107 dB of PSRR at 217 Hz Fully differential inputs I²C interface for volume control Digital volume control range from -60 dB to dB 101 dB of SNR A-weighted Independent right and left channel shutdown
control Low quiescent current: 4.8 mA typ. at 3.0V Low standby current: 2 µA max Output-coupling capacitors removed Flip-chip package 2.1 mm x 2.1 mm, 500 µm
pitch, 16 bumps
Applications
Cellular phones Notebook computers CD/MP3 players
Description

The TS4601B is a stereo headphone driver
dedicated to high audio performance and space-
constrained applications. It has the same uses as
the TS4601 which it replaces, while offering highly
improved ESD ratings.
It is based on low power dissipation amplifier core
technology. Special care was taken in the design
of the amplification chain to achieve peerless
PSRR (107 dB typ. at 217 Hz) and 101 dB of
SNR.
The TS4601B can drive 0.9 Vrms output voltage
into 16 Ω and 1.6 Vrms into 10 kΩ, whatever the
power supply voltage, in the 2.9 V to 5.5 V range.
An I²C interface offers volume control in 64 steps
from -60 dB to +4 dB and multiple configuration
modes for the device.
The traditionally used output-coupling capacitors
can be removed and a dedicated common-mode
sense pin removes parasitic noise from the jack.
The TS4601B is designed to be used with an
output serial resistor. It ensures unconditional
stability over a wide range of capacitive loads.
The TS4601B is packaged in a tiny 16-bump flip-
chip with a pitch of 500 µm and a 300 µm
diameter ball size.
Contents TS4601B
2/28
Contents Absolute maximum ratings and operating conditions . . . . . . . . . . . . . 3 Typical application schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

3.1 Electrical characteristics tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3.2 Electrical characteristic curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.1 Common-mode sense . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.2 I²C bus interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.2.1 I²C bus operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.2.2 Control registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Control register CR0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
4.3 Wake-up and standby time definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
4.4 Decoupling considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
4.5 Low frequency response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
4.6 Low pass output filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
4.7 Single-ended input configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
TS4601B Absolute maximum ratings and operating conditions
3/28 Absolute maximum ratings and operating conditions


Table 1. Absolute maximum ratings
All voltage values are measured with respect to the ground pin. The device is protected in case of over temperature by a thermal shutdown active @ 150°C. Exceeding the power derating curves during a long period may provoke abnormal operation. Human body model: A 100 pF capacitor is charged to the specified voltage, then discharged through a
1.5 kΩ resistor between two pins of the device. This is done for all couples of connected pin combinations
while the other pins are floating. Machine model: A 200 pF capacitor is charged to the specified voltage, then discharged directly between
two pins of the device with no external series resistor (internal resistor < 5 Ω). This is done for all couples of
connected pin combinations while the other pins are floating. The measurement is performed on the evaluation board, with an STMicroelectronics ESD protection
EMIF02-AV01F3
Table 2. Operating conditions
Typical application schematics TS4601B
4/28 Typical application schematics
Figure 1. Typical application schematics for the TS4601B


Table 3. Pin description for the TS4601B
TS4601B Typical application schematics
5/28
Table 4. Component description for the TS4601B
Table 3. Pin description for the TS4601B (continued)
Electrical characteristics TS4601B
6/28
3 Electrical characteristics
3.1 Electrical characteristics tables



Table 5. Electrical characteristics of the I²C interface
from VCC=+2.9 V to VCC=+5.5 V, GND = 0 V, Tamb = 25° C (unless otherwise specified)
Table 6. Electrical characteristics of the amplifier
from VCC=+2.9 V to VCC=+5.5 V, GND = 0 V, Tamb = 25° C (unless otherwise specified)
TS4601B Electrical characteristics
7/28 Guaranteed by design and parameter correlation. Dynamic measurements - 20*log(rms(Vout)/rms(Vripple)). Vripple is an added sinus signal to VCC @ F = 217 Hz. Guaranteed by design and parameter correlation.
Table 6. Electrical characteristics of the amplifier
from VCC=+2.9 V to VCC=+5.5 V, GND = 0 V, Tamb = 25° C (unless otherwise specified)
Electrical characteristics TS4601B
8/28
3.2 Electrical characteristic curves

Note: When the label “RC network” is present in a curve, it means that a 12 Ω + 1 nF low pass filter
connected on outputs is used (refer to Figure 1: Typical application schematics for the
TS4601B on page4).
Current consumption vs. power supply voltage see Figure2
Standby current consumption vs. power supply voltage see Figure 3 and Figure4
Maximum output power vs. power supply voltage see Figure5
Maximum output power vs. power supply voltage see Figure6
Maximum output voltage vs. power supply voltage see Figure7
PSRR vs. frequency see Figure 8 to Figure12
PSRR vs. gain setting see Figure13
THD+N vs. output power see Figure 14 to Figure25
THD+N vs. output voltage see Figure26
THD+N vs. frequency see Figure27
THD+N vs. frequency see Figure 28 to Figure39
CMRR vs. frequency see Figure 40 and Figure41
Crosstalk vs. frequency see Figure 42 to Figure45
Common mode response vs. frequency see Figure46
THD+N vs. input voltage. Line in mode 5 see Figure47
Input impedance vs. frequency. Line in mode 5 see Figure48
Gain vs. frequency see Figure49
TS4601B Electrical characteristics
9/28



Figure 2. Current consumption vs. power
supply voltage
Figure 3. Standby current consumption vs.
power supply voltage
Figure 4. Standby current consumption vs.
standby voltage
Figure 5. Maximum output power vs. power
supply voltage
Figure 6. Maximum output power vs. power
supply voltage
Figure 7. Maximum output voltage vs. power
Electrical characteristics TS4601B
10/28



Figure 8. PSRR vs. frequency Figure 9. PSRR vs. frequency
Figure 10. PSRR vs. frequency Figure 11. PSRR vs. frequency
Figure 12. PSRR vs. frequency Figure 13. PSRR vs. gain setting
TS4601B Electrical characteristics
11/28



Figure 14. THD+N vs. output power Figure 15. THD+N vs. output power
Figure 16. THD+N vs. output power Figure 17. THD+N vs. output power
Figure 18. THD+N vs. output power Figure 19. THD+N vs. output power
Electrical characteristics TS4601B
12/28



Figure 20. THD+N vs. output power Figure 21. THD+N vs. output power
Figure 22. THD+N vs. output power Figure 23. THD+N vs. output power
Figure 24. THD+N vs. output power Figure 25. THD+N vs. output power
TS4601B Electrical characteristics
13/28



Figure 26. THD+N vs. output voltage Figure 27. THD+N vs. frequency
Figure 28. THD+N vs. frequency Figure 29. THD+N vs. frequency
Figure 30. THD+N vs. frequency Figure 31. THD+N vs. frequency
Electrical characteristics TS4601B
14/28



Figure 32. THD+N vs. frequency Figure 33. THD+N vs. frequency
Figure 34. THD+N vs. frequency Figure 35. THD+N vs. frequency
Figure 36. THD+N vs. frequency Figure 37. THD+N vs. frequency
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