IC AMP AUDIO PWR 1.2W 9FLIPCHIP

TS4995EIJT

Manufacturer Part NumberTS4995EIJT
DescriptionIC AMP AUDIO PWR 1.2W 9FLIPCHIP
ManufacturerSTMicroelectronics
TypeClass AB
TS4995EIJT datasheet
 

Specifications of TS4995EIJT

Output Type1-Channel (Mono)Max Output Power X Channels @ Load1.2W x 1 @ 8 Ohm
Voltage - Supply2.5 V ~ 5.5 VFeaturesDepop, Differential Inputs, Standby, Thermal Protection
Mounting TypeSurface MountPackage / Case9-FlipChip
Lead Free Status / RoHS StatusLead free / RoHS CompliantOther names497-6101-2
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Features
Differential inputs
90 dB PSRR @ 217 Hz with grounded inputs
Operates from V
= 2.5 V to 5.5 V
CC
1.2 W rail-to-rail output power @ V
THD+N=1%, F=1 kHz, with an 8 Ω load
6 dB integrated fixed gain
Ultra-low consumption in standby mode
(10 nA)
Selectable standby mode (active low or active
high)
Ultra-fast startup time: 10 ms typ. at V
Available in 9-bump flip chip (300 mm bump
diameter)
Ultra-low pop and click
Applications
Mobile phones (cellular / cordless)
PDAs
Laptop / notebook computers
Portable audio devices
Description
The TS4995 is an audio power amplifier capable
of delivering 1.2 W of continuous RMS output
power into an 8 Ω load at 5 V. Thanks to its
differential inputs, it exhibits outstanding noise
immunity.
An external standby mode control reduces the
supply current to less than 10 nA. A STBY MODE
pin allows the standby pin to be active high or
low. An internal thermal shutdown protection is
also provided, making the device capable of
sustaining short-circuits.
March 2008
1.2 W fully differential audio power amplifier
with selectable standby and 6 dB fixed gain
Pin connections (top view)
=5 V,
CC
V
V
Bypass
Bypass
=3.3 V
V
V
CC
IN+
IN+
The TS4995 features an internal fixed gain at 6dB
which reduces the number of external
components on the application board.
The device is equipped with common mode
feedback circuitry allowing outputs to be always
biased at V
CC
mode voltage.
The TS4995 is specifically designed for high
quality audio applications such as mobile phones
and requires few external components.
Rev 3
TS4995
TS4995 - Flip chip 9
Gnd
Gnd
V
V
7
7
6
6
5
5
O-
O-
O+
O+
Stdby
Stdby
4
4
8
8
9
9
V
V
2
2
3
3
1
1
IN-
IN-
V
V
Stdby Mode
Stdby Mode
CC
CC
/2 regardless of the input common
www.st.com
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TS4995EIJT Summary of contents

  • Page 1

    Features ■ Differential inputs ■ PSRR @ 217 Hz with grounded inputs ■ Operates from ■ 1.2 W rail-to-rail output power @ V THD+N=1%, F=1 kHz, with an 8 Ω ...

  • Page 2

    Contents Contents 1 Absolute maximum ratings and operating conditions . . . . . . . . . . . . . 3 2 Typical application schematics . . . . . . . . . . . . . ...

  • Page 3

    TS4995 1 Absolute maximum ratings and operating conditions Table 1. Absolute maximum ratings (AMR) Symbol (1) V Supply voltage CC (2) V Input voltage in T Operating free air temperature range oper T Storage temperature stg T Maximum junction temperature ...

  • Page 4

    Typical application schematics 2 Typical application schematics Table 3. External component descriptions Component Figure 1. Typical application Optional Vin Vin+ 4/26 Functional description Supply bypass capacitor that provides power supply filtering. Bypass ...

  • Page 5

    TS4995 3 Electrical characteristics Table +5V, GND = 0V Symbol Parameter I Supply current CC I Standby current STBY Differential output offset V oo voltage V Input common mode voltage IC P Output power o ...

  • Page 6

    Electrical characteristics Table +3.3V (all electrical values are guaranteed with correlation measurements at CC 2.6V and 5V), GND = 0V, T Symbol Parameter I Supply current CC I Standby current STBY Differential output offset V oo voltage ...

  • Page 7

    TS4995 Table +2.6V, GND = 0V Symbol Parameter I Supply current CC I Standby current STBY Differential output offset V oo voltage V Input common mode voltage IC P Output power o Total harmonic distortion ...

  • Page 8

    Electrical characteristics Figure 2. THD+N vs. output power 10 Ω 6dB F = 20Hz μ < 125kHz 1 ° Tamb = 25 C Vcc=2.6V 0.1 0.01 1E-3 0.01 Output power ...

  • Page 9

    TS4995 Figure 8. THD+N vs. output power 10 Ω 6dB F = 1kHz μ < 125kHz 1 ° Tamb = 25 C Vcc=2.6V 0.1 0.01 1E-3 0.01 Output power (W) ...

  • Page 10

    Electrical characteristics Figure 14. THD+N vs. output power 10 Ω 6dB F = 20kHz μ Vcc=3.3V BW < 125kHz ° Tamb = Vcc=2.6V 0.1 1E-3 0.01 Output power ...

  • Page 11

    TS4995 Figure 20. THD+N vs. frequency 10 Ω 6dB μ < 125kHz Vcc=2.6V, Po=225mW Tamb = 25C 1 Vcc=5V, Po=850mW 0.1 Vcc=3.3V, Po=300mW 0.01 100 Frequency (Hz) Figure 22. THD+N ...

  • Page 12

    Electrical characteristics Figure 26. Output power vs. power supply voltage 2,0 μ 1 1kHz BW < 125 kHz 1,6 ° Tamb = 25 C 1,4 1,2 1,0 0,8 0,6 0,4 0,2 0,0 2,5 3,0 ...

  • Page 13

    TS4995 Figure 32. PSSR vs. frequency 0 Vcc = 2.6V -10 Vripple = 200mVpp -20 ≥ Ω -30 μ 6dB, Cin = 4.7 F Inputs grounded -40 ° Tamb = 25 C -50 -60 -70 μ ...

  • Page 14

    Electrical characteristics Figure 38. PSSR vs. common mode input voltage 20 Vcc = 5V Vripple = 200mVpp 217Hz G = 6dB ≥ Ω - Tamb = 25°C Cb=0.1 -40 Cb=0.47 μ Cb=0 Cb=1 F -60 ...

  • Page 15

    TS4995 Figure 44. CMRR vs. common mode input voltage 20 Vic = 200mVpp 217Hz μ ≥ Ω -10 Tamb = 25°C -20 -30 Vcc=2.6V -40 -50 -60 -70 -80 -90 ...

  • Page 16

    Electrical characteristics Figure 50. Current consumption vs. standby voltage 4.0 3.5 3.0 2.5 2.0 Standby mode=2.6V 1.5 1.0 0.5 0.0 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 Standby Voltage (V) Figure 52. Frequency ...

  • Page 17

    TS4995 4 Application information 4.1 Differential configuration principle The TS4995 is a monolithic full-differential input/ output power amplifier with fixed +6 dB gain. The TS4995 also includes a common mode feedback loop that controls the output bias value to average ...

  • Page 18

    Application information Figure 56 lower cut-off frequency vs. input capacitance 4.4 Power dissipation and efficiency Assumptions: ● Load voltage and current are sinusoidal (V ● Supply voltage is a pure DC source (V The output voltage is: and ...

  • Page 19

    TS4995 Therefore, the power dissipated by each amplifier is diss supply and the maximum value is obtained when: and its value is: Equation 3 Note: This maximum value is only dependent on the power supply voltage and ...

  • Page 20

    Application information 4.5 Decoupling of the circuit Two capacitors are needed to correctly bypass the TS4995: a power supply bypass capacitor C and a bias voltage bypass capacitor C S The C capacitor has particular influence on the THD+N at ...

  • Page 21

    TS4995 4.7 Shutdown time When the standby command is set, the time required to put the two output stages in high impedance and the internal circuitry in shutdown mode is a few microseconds. Note: In shutdown mode, the Bypass pin ...

  • Page 22

    Application information Figure 58. Typical single-ended input application Ve Cin1 P1 330nF Cin2 330nF 22/26 VCC TS4995 3 Vin- 1 Vin+ 8 BYP ASS BIAS 1uF STBY Cbypass1 STDBY STDBY MODE VCC Cs1 1uF TS4995 FlipChip Vo- 7 Vo+ 5 ...

  • Page 23

    ... JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label. ECOPACK is an STMicroelectronics trademark. ECOPACK specifications are available at: www.st.com. Figure 59. 9-bump flip-chip package mechanical drawing 1 ...

  • Page 24

    Package information Figure 61. Pin out (top view) Gnd Gnd Bypass Bypass IN+ IN – Balls are underneath ...

  • Page 25

    ... TS4995 6 Ordering information Table 7. Order code Order code TS4995EIJT 7 Revision history Table 8. Document revision history Date 1-Jun-2006 25-Oct-2006 25-Mar-2008 Temperature Package range -40° +85° C Lead free flip chip 9 Revision 1 Final datasheet. 2 Additional information for 4Ω load. Modified Figure 60: Tape and reel schematics 3 orientation ...

  • Page 26

    ... Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. ...