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부품번호 | TPF603 기능 |
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기능 | Audio Line Driver | ||
제조업체 | 3Peak | ||
로고 | |||
TPF603 / TPF605 / TPF607
Features
3-VRMS Audio Line Driver with Integrated Charge Pump
Description
3-VRMS Output into 2.5kΩ Load with 5V Supply
2-VRMS Output into 2.5kΩ Load with 3.3V Supply
Integrated Charge Pump Generates Negative
Supply Rail
0-V DC Voltage at Output
Low Noise: VN = 4.3μVRMS at 20Hz to 20kHz
Low THD+N: 0.001%
Drives 600Ω Load
Stable with 220pF Capacitive Load
Pop-Free Under-Voltage Protection (TPF603/605)
Pop-Free Enable Control
–40°C to 85°C Operation Range
Robust 8kV (Output-Pin) HBM ESD Rating
Robust 2kV CDM ESD Rating
Green, Popular Type Package
Applications
The 3PEAK INCORPORATED TPF603/605/607 are
3-VRMS pop-free stereo line drivers with the
integrated charge pump generating the negative
supply rail which allows the removal of the output
DC-blocking capacitors. The devices are capable of
driving 3-VRMS into a 2.5-kΩ load with single 5V
supply voltage. The TPF603 has differential inputs,
the TPF605/607 support single-ended inputs, and
all can use external resistors for flexible gain setting.
The TPF603/605/607 has built-in enable/shutdown
control for pop-free on/off control. The TPF603/605
have an external under-voltage detector that mutes
the output when monitored voltage drop below set
value. Using the TPF603/605/607 in audio products
can reduce component count considerably
compared to traditional methods of generating a
3-VRMS output.
The device needs only a single 5V supply to
generate 8.5-VPP output while traditional op-amp
requires a split-rail power supply to achieve same.
The device is ideal for single-supply electronics
where size and cost are critical design parameters.
Set-Top Box
Blu-ray and HD DVD Players
PDP TV and LCD TV
Home Theater in a Box
3PEAK and the 3PEAK logo are registered trademarks of
3PEAK INCORPORATED. All other trademarks are the property
of their respective owners.
Audio Line Drivers
Part
Number
TPF632
TPF603
TPF605
TPF607
Package
TSSOP-14
TSSOP-14
MSOP-10-EP
MSOP-10
Remarks
3.3V, Differential inputs
5V/3.3V, Differential inputs
5V/3.3V, Single-ended inputs
Single-ended inputs, no UVP control
Pin Configuration (Top View)
TPF603
14-Pin TSSOP
TPF605
10-Pin MSOP-EP
+INR 1
-INR 2
OUTR 3
GND 4
EN 5
PVSS 6
CN 7
UVP
Charge
Pump
14 +INL
13 -INL
12 OUTL
11 UVP
10 PGND
9 PVDD
8 CP
-INR
OUTR
EN
PVSS
CN
1
2
3
4
5
GND
UVP
Charge
Pump
10 -INL
9 OUTL
8 UVP
7 PVDD
6 CP
www.3peakic.com
TPF607
10-Pin MSOP
-INR
OUTR
EN
PVSS
CN
1
2
3
4
5
Charge
Pump
10 -INL
9 OUTL
8 GND
7 PVDD
6 CP
REV0.2
1
TPF603 / TPF605 / TPF607
3-VRMS Audio Line Driver with Integrated Charge Pump
Typical Performance Characteristics
Total Harmonic Distortion + Noise vs. Output Voltage
10
1 VDD=3.3V
RL=2.5kΩ
0.1 f=1kHz
0.01
0.001
0.0001
0.1
1
Output Voltage (Vrms)
10
Total Harmonic Distortion + Noise vs. Output Voltage
10
1 VDD=5V
RL=600Ω
0.1 f=1kHz
0.01
0.001
0.0001
0.1
1
Output Voltage (Vrms)
10
Total Harmonic Distortion + Noise vs. Frequency
0.1
0.01
VDD=3.3V
RL=2.5kΩ
Vo=2Vrms
Total Harmonic Distortion + Noise vs. Frequency
0.1
0.01
VDD=5V
RL=100kΩ
Vo=2Vrms
0.001
0.001
0.0001
10
100 1k 10k
Frequency (Hz)
100k
Quiescent Current vs. Supply Voltage
0.1
0.01
VDD=5V
RL=100kΩ
Vo=2Vrms
0.0001
10
100 1k 10k
Frequency (Hz)
100k
0.001
0.0001
10
100 1k 10k
Frequency (Hz)
100k
4 REV0.2
www.3peakic.com
4페이지 AC-Coupling Input Capacitors
TPF603 / TPF605 / TPF607
3-VRMS Audio Line Driver with Integrated Charge Pump
Because of the integrated charge pump that generates negative rail, TP603/605/607 may be used to amplify audio
signal so the output DC voltage is 0V. This usually requires the DC voltage of the input signal to be 0V. If the input
signal has a DC level other than 0V, an AC-coupling capacitor is necessary to block the DC voltage.
The AC-coupling capacitor essentially forms a high-pass filter at the input. The cut-off frequency of the filter has to be
low enough not to distort the input audio signal. For an inverting amplifier shown in Figure 4 the cut-off frequency may
be calculated
as
following:
fc
= 2
1
R IN C IN
(1)
If the required maximum cut-off frequency is known, the minimum AC-coupling capacitance can be determined:
CIN
1
2 RINfc
Adding Low-Pass Filtering to the Gain
(2)
If low-pass filtering is necessary in addition to the audio signal amplification, a second-order filter can be implemented
as shown in Figure 5. Choice of C3, R1, R2, and R3 is based on the gain setting requirement and AC-coupling cut-off
frequency as discussed above. C1, C2 and C4 may be calculated depending on the bandwidth. Example choices of R
and C are listed in Table 1. If first-order filtering satisfies performance requirements, simply remove the C2 and C4 to
lower the component counts.
R3 R3
R1 R2
-VIN
C3 C2
C1
-VIN
+VIN
C3 R1
C3 R1
R2
C4
R2
C1
C1
(a) (b) R3
Figure 5 Second-order filter with gain: (a) Single-ended input; (b) Differential input
Table 1 Example RC setting at different gains
Gain
G=2
G=2.5
G=3.75
R1
2.5k
2.4k
2k
R2
2.5k
2.4k
2k
R3
10k
12k
15k
C1
120pF
91pF
75pF
C2
1nF
750pF
750pF
C3
2.2uF
2.2uF
4.7uF
C4
360pF
390pF
390pF
Pop-Free Power Up and Power Down
During power up or power down, the input device that provide audio source may experience significant DC level shift.
Charging of the input capacitor due to DC shift will cause pop noise. It is recommended that TPF603/605/607 is
disabled (EN low) during power up and power down and kept disabled until charging of the input capacitor is complete.
The sequence of EN control is illustrated below.
www.3peakic.com
REV0.2
7
7페이지 | |||
구 성 | 총 12 페이지수 | ||
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부품번호 | 상세설명 및 기능 | 제조사 |
TPF603 | Audio Line Driver | 3Peak |
TPF605 | Audio Line Driver | 3Peak |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |