TPF607C [3PEAK]

3-VRMS Audio Line Driver with Integrated Charge Pump;


型号：	TPF607C
厂家：	3PEAK
描述：	3-VRMS Audio Line Driver with Integrated Charge Pump
文件：	总12页 (文件大小：1305K)
中文：	中文翻译
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TPF632C / TPF605C / TPF607C

3-V_RMSAudio Line Driver with Integrated Charge Pump

Description

Features

The 3PEAK TPF632C/605C/607C are 3-VRMS pop-

free stereo line drivers with the integrated charge



3-V_RMSOutput into 2.5kΩ Load with 5V Supply

2-V_RMSOutput into 2.5kΩ Load with 3.3V Supply

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 TPF632C has differential inputs, the

TPF605C/607C support single-ended inputs, and all

can use external resistors for flexible gain setting.

Integrated Charge Pump Generates Negative

Supply Rail



SNR Enhanced

PVDD Power Off Delay Function

Low THD+N: 0.001%

The 3PEAK TPF632C/605C/607C has built-in

enable/shutdown control for pop-free on/off control.

The TPF632C/605C has an external under-voltage

detector that mutes the output when monitored

voltage drop below set value. Using the

TPF632C/605C/607C in audio products can reduce

component count considerably compared to

traditional methods of generating a 3-VRMS output.

Drives 600Ω Load

Stable with 220pF Capacitive Load

Pop-Free Under-Voltage Protection

(TPF632C/605C)



Pop-Free Enable Control

–40°C to 85°C Operation Range

Robust 8kV (Output-Pin) HBM ESD Rating On All

Pins

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.



Robust 2kV CDM ESD Rating

Green, Popular Type Package

3PEAK and the 3PEAK logo are registered trademarks of

3PEAK INCORPORATED. All other trademarks are the property

of their respective owners.

Applications



Set-Top Box

Blue-ray and HD DVD Players

PDP TV and LCD TV

Audio Line Drivers

LEFT

DAC

Part

Package

Remarks

Number

TPF632C

TPF605C

TPF632C

RIGHT

TSSOP-14

5V/3.3V,Differential inputs

DAC

MSOP-10-EP 5V/3.3V, Single-ended inputs

Single-ended inputs, no UVP

TPF607C

MSOP-10

control

Figure 1. Typical Application Circuit of TPF632C

Pin Configuration(Top View)

TPF632C

TPF605C

TPF607C

14-Pin TSSOP

10-Pin MSOP-EP

10-Pin MSOP

+INR

-INR

+INL

-INL

-INR

OUTR

-INR

OUTR

OUTL

UVP

PVDD

OUTL

GND

PVDD

OUTR

GND

12 OUTL

11 UVP

GND

UVP

PVSS

Charge

Pump

Charge

Pump

PGND

PVDD

PVSS

Charge

Pump

www.3peakic.com.cn

Rev.A.1

TPF632C / TPF605C / TPF607C

3-V_RMSAudio Line Driver with Integrated Charge Pump

Order Information

Marking

Information

Model Name

Order Number

Package

Transport Media, Quantity

TPF632C

TPF605C

TPF607C

TPF632C-TR

TPF605C-VR

TPF607C-VR

14-Pin TSSOP

10-Pin MSOP-EP

10-Pin MSOP

Tape and Reel, 3000

TPF632C

TPF605C

TPF607C

Note 1

Absolute Maximum Ratings

Supply Voltage: V⁺– V^–....................................6.0V

Input Voltage............................. V^–– 0.3 to V⁺+ 0.3

Input Current: +IN, –IN, SHDN ^{Note 2}.............. ±10mA

EN Pin Voltage……………………………V^–to V⁺

Output Current: OUT.................................... ±20mA

Output Short-Circuit Duration ^{Note 3}…......... Indefinite

Operating Temperature Range.......–40°C to 125°C

Maximum Junction Temperature................... 150°C

Storage Temperature Range.......... –65°C to 150°C

Lead Temperature (Soldering, 10 sec) ......... 260°C

Note 1: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. Exposure to any Absolute Maximum Rating

condition for extended periods may affect device reliability and lifetime.

Note 2: The inputs are protected by ESD protection diodes to each power supply. If the input extends more than 500mV beyond the power supply, the input

current should be limited to less than 10mA.

Note 3: A heat sink may be required to keep the junction temperature below the absolute maximum. This depends on the power supply voltage and how many

amplifiers are shorted. Thermal resistance varies with the amount of PC board metal connected to the package. The specified values are for short traces

connected to the leads.

ESD, Electrostatic Discharge Protection

All

Symbol

HBM

Parameter

Condition

Minimum Level

Unit

Human Body Model ESD

Charged Device Model ESD

MIL-STD-883H Method 3015.8

JEDEC-EIA/JESD22-C101E

CDM

Thermal Resistance

Package Type

θ_JA

θ_JC

Unit

14-Pin TSSOP

10-Pin MSOP

130

120

°C/W

10-Pin MSOP-EP

Rev.A.1

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TPF632C/TPF605C/TPF607C

3-V_RMSAudio Line Driver with Integrated Charge Pump

5V Electrical Characteristics

Specifications are at T_A= 27°C. V_DD= 5V, R_L= 2.5kΩ, C_PUMP=C_PVSS=1F, C_IN=10F, R_IN= 10kΩ, R_FB= 20kΩ, unless otherwise noted.

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

V_DD

V_OS

I_Q

Supply Voltage Range

Output Offset Voltage

Quiescent Current

2.7

-4

5.5

Input grounded, unity gain.

No load

4.6

I_Q(off)

Supply Current in Shutdown

0.2

V_DD=3.3V, f=1kHz, THD=1%

V_DD=5V, f=1kHz, THD=1%

2.05

3.05

V_RMS

V_O

Output Voltage

Total Harmonic Distortion Plus

Noise

THD+N

V_ENH

V_O=3V_RMS, f=1kHz

0.001

V_DD=3.3V, EN Low to High Transition

V_DD=5V, EN Low to High Transition

V_DD=3.3V, EN High to Low Transition

V_DD=5V, EN Low to High Transition

V_DD= 5 V, V_I= V_DD

High-level Threshold Voltage(EN)

Low-level Threshold voltage(EN)

0.5

0.6

0.1

V_ENL

|I_ENH

|I_ENL

X_TALK

I_SC

High-level input current(EN)

Low-level input current(EN)

Crosstalk

μA

k

V/μs

V_DD= 5 V, V_I= 0 V

V_O=3V_RMS, f=1kHz

-110

Short Circuit Current

Input Resistor Range

Slew Rate

V_DD=5V

R_IN

C_L

Maximum Capacitive Load

Flying Capacitor

220

2.2

C_F

0.1

0.33

4.3

μF

μV_RMS

MHz

V_N

Noise Output Voltage

Signal to Noise Ratio

Unity Gain Bandwidth

Open-Loop Voltage Gain

BW=20Hz to 20kHz

V_O=3V_RMS, f=1kHz, BW=20kHz

No load

SNR

GBW

A_VOL

117

No load

130

1.23

1.27

V_DD=3.3V

1.18

1.23

1.28

1.30

V_UVP

External Under-voltage Detection

V_DD=5V

External Under-voltage Detection

Hysteresis Current

I_HYS

f_CP

4.7

μA

Charge Pump Frequency

330

kHz

www.3peakic.com.cn

Rev.A.1

TPF632C / TPF605C / TPF607C

3-V_RMSAudio Line Driver with Integrated Charge Pump

Typical Performance Characteristics

Total Harmonic Distortion + Noise vs. Output Voltage

V_DD=3.3V

R_L=100kΩ

f=1kHz

0.1

0.01

0.001

0.0001

0.1

Output Voltage (V_rms

)

Total Harmonic Distortion + Noise vs. Output Voltage

Total Harmonic Distortion + Noise vs. Frequency

0.1

V_DD=5V

R_L=100kΩ

0.01

Vo=2Vrms

0.001

0.0001

100

10k

100k

Frequency (Hz)

Rev.A.1

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TPF632C/TPF605C/TPF607C

3-V_RMSAudio Line Driver with Integrated Charge Pump

Pin Functions

I/O

Description

Name

+INR

-INR

OUTR

GND

Number

Positive input of the right channel OPAMP

2/1

Negative input of the right channel OPAMP

Output of the right channel OPAMP

Ground

3/2

4/EP/8

5/3

Enable

PVSS

6/4

I/O

Negative supply generated with integrated charge pump

Negative terminal of the flying capacitor of the charge

Positive terminal of the flying capacitor of the charge

Positive supply

7/5

8/6

PVDD

PGND

UVP

OUTL

-INL

9/7

Ground for charge pump

11/8

12/9

13/10

Under-voltage protection input

Output of the left channel OPAMP

Negative input of the left channel OPAMP

Positive input of the left channel OPAMP

+INR

Applications Information

Typical Application Circuit

-V_INR

-V_INL

C_IN

R_IN

C_IN

R_FB

V_OUTR

V_OUTL

GND

UVP

PGND

PVDD

UVP

PVSS

Charge Pump

1μF

0.33μF

Figure 2 Typical Application Circuit of TPF632C

www.3peakic.com.cn

Rev.A.1

TPF632C / TPF605C / TPF607C

3-V_RMSAudio Line Driver with Integrated Charge Pump

Figure 3 Typical Application Circuit of TPF605C（Left）and TPF607C（Right）

Typical application circuits are shown as above. TPF632C/605C/607C operates from a single supply voltage PVDD.

It integrated charge pump generates a negative supply –PVDD at the PVSS pin. The Line driving amplifiers work with

dual supplies: PVDD and –PVDD. Therefore, the DC level of the audio output can be designed to be 0V. A DC-blocking

capacitor typically seen in a single-supplied driver is not necessary.

The supply range of the TPF632C/605C/607C is 2.7V to 5.5V. For a 3V_RMSoutput, the recommended supply voltage is

5V. For a 2V_RMSoutput, the recommended supply voltage is 3.3V.

R_INof 2.5k and R_FBof 5k set the inverting gain of 2. Because of the exceptional noise performance of

TPF632C/605C/607C, the dominant noise source is actually from R_IN. To get better noise performance, lower input

resistance and feedback resistance may be used.

Integrated Charge Pump

The integrated charge pump in TPF632C/605C/607C generates negative power supply from a single supply PVDD. A

flying capacitor for the charge pump shall be applied between CP and CN. At the same time a decoupling capacitor

shall be applied between PVSS and ground. Typical value for the flying capacitor is 0.33uF. Typical value of the

decoupling capacitor shall be same as or larger than that of the flying capacitor. Low-ESR capacitors are recommended

for the flying capacitor and the decoupling capacitor.

Audio Signal Amplification Gain Setting

The main application of the TPF632C/605C/607C is to amplify/buffer audio signals and drive audio lines with very low

distortion. Typical application circuits with inverting gain are shown in Figure. 4.

Non-inverting amplification of audio signals is also possible with same low distortion.

R_FB

C_IN

R_IN

-V_IN

C_IN

R_IN

+V_IN

R_FB

(a)

(b)

Figure 4 Typical Application Circuit of TPF632C

Rev.A.1

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TPF632C/TPF605C/TPF607C

3-V_RMSAudio Line Driver with Integrated Charge Pump

AC-Coupling Input Capacitors

Because of the integrated charge pump that generates negative rail, TP632C/605C/607C 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:

f_c=

(1)

2R_INC_IN

If the required maximum cut-off frequency is known, the minimum AC-coupling capacitance can be determined:

C_IN

(2)

2R_INf_c

Adding Low-Pass Filtering to the Gain

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.

-V_IN

+V_IN

(a)

(b)

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

2.5k

2.4k

2k

2.5k

2.4k

2k

10k

12k

15k

120pF

91pF

75pF

1nF

2.2uF

4.7uF

360pF

390pF

G=2.5

G=3.75

750pF

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 TPF632C/605C/607C 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.cn

Rev.A.1

TPF632C / TPF605C / TPF607C

3-V_RMSAudio Line Driver with Integrated Charge Pump

Power

Figure 6 The Sequence of EN Control

Under-voltage Protection

When unexpected power off happens, the host may not have enough time to disable TPF632C/605C/607C before pop

noise is generated. The integrated under-voltage protection circuits can be used to mute and disable

TPF632C/605C/607C when the monitored supply voltage drops below certain voltage.

The recommended connection is shown below. V_SUPPLYis the monitored supply voltage. The threshold voltage at the

UVP pin is 1.23V. R3 sets the hysteresis voltage and is usually much larger than R1 and R2. The turn on threshold and

hysteresis can be calculated:

V_TH= 1.23V x (R1+R2)/R2

(3)

(4)

(5)

Hysteresis = 4.7uA x R3 x (R1+R2)/R2

when R3>>R1, R2

V_supply

UVP

Figure 7 Under-voltage Protection Circuits

ESD

TPF632C/605C/607C has reverse-biased ESD protection diodes on all inputs and outputs. Input and out pins can not

be biased more than 300mV beyond either supply rail.

Driving Large Capacitive Load

TPF632C/605C/607C is designed to drive large capacitive loads up to 220pF directly. When driving larger capacitive

loads with the TPF632C/605C/607C, a small series resistor at the output (R_ISOin Figure 8 ) improves the feedback

loop’s phase margin and stability by making the output load resistive at higher frequencies. Usually R_ISOof 50 is

sufficient.

Rev.A.1

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TPF632C/TPF605C/TPF607C

3-V_RMSAudio Line Driver with Integrated Charge Pump

Riso

Vout

Vin

TPF632C

Cload

Figure 8 Driving Circuits

Power Supply Layout and Bypass

The power supply pin of TPF632C/605C/607C should have a local bypass capacitor (i.e., 0.01μF to 0.1μF) within 2mm

for good high frequency performance. It can also use a bulk capacitor (i.e., 1μF or larger) within 100mm to provide

large, slow currents. This bulk capacitor can be shared with other analog parts.

Ground layout improves performance by decreasing the amount of stray capacitance and noise at the OPA’s inputs

and outputs. To decrease stray capacitance, minimize PC board lengths and resistor leads, and place external

components as close to the op amps’ pins as possible.

Proper Board Layout

To ensure optimum performance at the PCB level, care must be taken in the design of the board layout. To avoid

leakage currents, the surface of the board should be kept clean and free of moisture. Coating the surface creates a

barrier to moisture accumulation and helps reduce parasitic resistance on the board.

Keeping supply traces short and properly bypassing the power supplies minimizes power supply disturbances due to

output current variation, such as when driving an ac signal into a heavy load. Bypass capacitors should be connected

as closely as possible to the device supply pins. Stray capacitances are a concern at the outputs and the inputs of the

amplifier. It is recommended that signal traces be kept at least 5mm from supply lines to minimize coupling.

A variation in temperature across the PCB can cause a mismatch in the Seebeck voltages at solder joints and other

points where dissimilar metals are in contact, resulting in thermal voltage errors. To minimize these thermocouple

effects, orient resistors so heat sources warm both ends equally. Input signal paths should contain matching numbers

and types of components, where possible to match the number and type of thermocouple junctions. For example,

dummy components such as zero value resistors can be used to match real resistors in the opposite input path.

Matching components should be located in close proximity and should be oriented in the same manner. Ensure leads

are of equal length so that thermal conduction is in equilibrium. Keep heat sources on the PCB as far away from

amplifier input circuitry as is practical.

The use of a ground plane is highly recommended. A ground plane reduces EMI noise and also helps to maintain a

constant temperature across the circuit board.

www.3peakic.com.cn

Rev.A.1

TPF632C / TPF605C / TPF607C

3-V_RMSAudio Line Driver with Integrated Charge Pump

Package Outline Dimensions

TSSOP-14

Dimensions

In Millimeters

Symbol

MIN

TYP

MAX

1.20

0.15

1.05

0.28

0.19

5.06

6.60

4.50

0.05

0.90

0.20

0.10

4.86

6.20

4.30

1.00

4.96

6.40

4.40

0.65 BSC

0.60

0.45

0.75

1.00 REF

0.25 BSC

0.09

0°

8°

Rev.A.1

www.3peakic.com.cn

TPF632C/TPF605C/TPF607C

3-V_RMSAudio Line Driver with Integrated Charge Pump

Package Outline Dimensions

MSOP-10-EP (EXPOSED PAD)

Dimensions

In Millimeters

Symbol

MIN

TYP

MAX

1.10

0.15

0.95

0.28

0.23

3.10

0.05

0.75

0.19

0.08

2.90

0.85

0.15

3.00

1.80REF

3.30

1.55REF

0.50BSC

2.90

3.10

0.40

0°

0.70

8°

0.95BSC

aaa

bbb

ccc

ddd

0.2

0.25

0.10

0.08

www.3peakic.com.cn

Rev.A.1

TPF632C / TPF605C / TPF607C

3-V_RMSAudio Line Driver with Integrated Charge Pump

Package Outline Dimensions

MSOP-10 (NO EXPOSED PAD)

Dimensions

In Millimeters

Symbol

MIN

TYP

MAX

1.10

0.15

0.95

0.28

0.23

3.10

0.05

0.75

0.19

0.08

2.90

0.85

0.15

3.00

1.80REF

3.30

1.55REF

0.50BSC

2.90

3.10

0.40

0°

0.70

8°

0.95BSC

aaa

bbb

ccc

ddd

0.2

0.25

0.10

0.08

Rev.A.1

www.3peakic.com.cn

TPF607C [3PEAK]

相关型号：

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TPFD-7501-1A

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