TS4994EIJT STMicroelectronics, TS4994EIJT Datasheet

IC AMP AUDIO PWR 1W AB 9FLIPCHIP

TS4994EIJT

Manufacturer Part Number
TS4994EIJT
Description
IC AMP AUDIO PWR 1W AB 9FLIPCHIP
Manufacturer
STMicroelectronics
Type
Class ABr
Datasheet

Specifications of TS4994EIJT

Output Type
1-Channel (Mono)
Max Output Power X Channels @ Load
1W x 1 @ 8 Ohm
Voltage - Supply
2.5 V ~ 5.5 V
Features
Depop, Differential Inputs, Short-Circuit and Thermal Protection, Standby
Mounting Type
Surface Mount
Package / Case
9-FlipChip
For Use With
497-6396 - BOARD EVAL FOR LV TS4984IQT497-6395 - BOARD EVAL FOR LP DIFF TS4994IQT
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

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Features
Description
The TS4994 is an audio power amplifier capable
of delivering 1W of continuous RMS output power
into an 8Ω load @ 5V. Due to its differential inputs,
it exhibits outstanding noise immunity.
An external standby mode control reduces the
supply current to less than 10nA. An STBY
MODE pin allows the standby to be active HIGH
or LOW. An internal thermal shutdown protection
is also provided, making the device capable of
sustaining short-circuits.
Order codes
December 2006
Differential inputs
Near-zero pop & click
100dB PSRR @ 217Hz with grounded inputs
Operating range from V
1.2W rail-to-rail output power @ V
THD = 1%, F = 1kHz, with 8Ω load
90dB CMRR @ 217Hz
Ultra-low consumption in standby mode (10nA)
Selectable standby mode (active low or active
high)
Ultra fast startup time: 15ms typ.
Available in 9-bump flip-chip (300mm bump
diameter)
Lead-free package
TS4994EIKJT
Part number
TS4994EIJT
Temperature range
1.2 W differential input/output audio power amplifier
-40°C, +85°C
CC
= 2.5V to 5.5V
CC
= 5V,
Lead free flip-chip9
FC9 with back
Rev 2
Package
coating
The device is equipped with common mode
feedback circuitry allowing outputs to be always
biased at V
mode voltage.
The TS4994 is designed for high quality audio
applications such as mobile phones and requires
few external components.
Applications
Mobile phones (cellular / cordless)
Laptop / notebook computers
PDAs
Portable audio devices
TS4994EIJT - Flip-chip (9 bumps)
Bypass
Bypass
V
V
V
V
CC
IN+
IN+
O-
O-
with selectable standby
/2 regardless of the input common
Tape & reel
Packaging
7
7
8
8
1
1
Gnd
Gnd
V
V
6
6
9
9
2
2
CC
CC
TS4994FC
Stdby Mode
Stdby Mode
5
5
3
3
4
4
V
V
Stdby
Stdby
V
V
Marking
O+
O+
IN-
IN-
A94
A94
www.st.com
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TS4994EIJT Summary of contents

Page 1

... Applications ■ Mobile phones (cellular / cordless) ■ Laptop / notebook computers ■ PDAs ■ Portable audio devices Package FC9 with back coating Lead free flip-chip9 Rev 2 TS4994FC with selectable standby TS4994EIJT - Flip-chip (9 bumps) Gnd Gnd Bypass Bypass ...

Page 2

Contents Contents 1 Application component information . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 Absolute maximum ratings and ...

Page 3

TS4994FC 1 Application component information Components C Supply bypass capacitor that provides power supply filtering Bypass capacitor that provides half supply filtering. b Feedback resistor that sets the closed loop gain in conjunction with R R feed A ...

Page 4

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

Page 5

TS4994FC 3 Electrical characteristics Table 3. Electrical characteristics for V specified) Symbol Supply current input signal, no load Standby current I No input signal, V STBY STBY No input signal, V STBY Differential output offset voltage V ...

Page 6

Electrical characteristics Table 4. Electrical characteristics for V correlation measurements at 2.6V and 5V), GND = 0V, T specified) Symbol I Supply current no input signal, no load CC Standby current I No input signal, V STBY STBY No input ...

Page 7

TS4994FC Table 5. Electrical characteristics for V specified) Symbol Supply current input signal, no load Standby current I No input signal, V STBY STBY No input signal, V STBY Differential output offset voltage input ...

Page 8

Electrical characteristics Figure 2. Current consumption vs. power supply voltage 4.0 No load Tamb=25 ° C 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0 Power Supply Voltage (V) Figure 4. Current consumption vs. standby voltage 3.5 3.0 ...

Page 9

TS4994FC Figure 8. Power dissipation vs. output power Figure 9. 0.6 Vcc=3.3V F=1kHz 0.5 THD+N<1% 0.4 0.3 0.2 0.1 RL=16 Ω 0.0 0.0 0.1 0.2 0.3 0.4 Output Power (W) Figure 10. Output power vs. power supply voltage 2.4 RL ...

Page 10

Electrical characteristics Figure 14. Power derating curves 1.2 Heat sink surface ≈ 100mm 1.0 (See demoboard) 0.8 0.6 0.4 0.2 No Heat sink 0 Ambiant Temperature ( C) Figure 16. Open loop gain vs. frequency 60 Gain ...

Page 11

TS4994FC Figure 20. Closed loop gain vs. frequency 10 Gain 0 -10 -20 Vcc = 2.6V - Ω + 500pF Tamb = 25 ° C -40 0 100 Frequency (kHz) Figure 22. ...

Page 12

Electrical characteristics Figure 26. PSRR vs. frequency 0 -10 Vcc = 2.6V -20 Vripple = 200mVpp Inputs = Grounded - 2.5, Cin = 4.7 μ F -40 RL ≥ 8 Ω -50 Tamb = 25 ° C Cb=0.47 ...

Page 13

TS4994FC Figure 32. PSRR vs. common mode input voltage 0 Vcc = 2.5V Vripple = 200mVpp Inputs Grounded - 217Hz -40 RL ≥ 8 Ω Tamb = 25 ° C -60 Cb=0 -80 -100 0.0 ...

Page 14

Electrical characteristics Figure 38. CMRR vs. frequency 0 Vcc = 2.6V -10 Vic = 200mVpp - 2.5, Cin = 470 μ ≥ 8 Ω -30 Tamb = 25 ° C -40 Cb=1 μ F -50 Cb=0.47 ...

Page 15

TS4994FC Figure 44. THD+N vs. output power Ω 20Hz Vcc=2. μ F Vcc=3.3V BW < 125kHz Tamb = 25 ° C Vcc=5V 0.1 0.01 1E-3 1E-3 0.01 ...

Page 16

Electrical characteristics Figure 50. THD+N vs. output power Ω 1kHz μ < 125kHz Tamb = 25 ° C 0.1 0.01 1E-3 0.01 Output Power (W) ...

Page 17

TS4994FC Figure 56. THD+N vs. output power Ω Vcc=2. 1kHz Vcc=3. μ < 125kHz Tamb = 25 ° C Vcc=5V 0.1 0.01 1E-3 1E-3 0.01 ...

Page 18

Electrical characteristics Figure 62. THD+N vs. output power Ω 20kHz Vcc=2. μ < 125kHz Vcc=3.3V 1 Tamb = 25 ° C Vcc=5V 0.1 1E-3 0.01 Output ...

Page 19

TS4994FC Figure 68. THD+N vs. frequency Ω μ < 125kHz Tamb = 25 ° C Vcc=2.6V, Po=350mW 0.1 0.01 Vcc=5V, Po=1W 1E-3 20 100 1000 Frequency (Hz) ...

Page 20

Electrical characteristics Figure 74. THD+N vs. output power Ω Vcc = 5V F=20kHz < 125kHz Tamb = 25 ° C F=1kHz 0.1 F=20Hz 0.01 1E-3 0.01 Output Power ...

Page 21

TS4994FC Figure 80. THD+N vs. output power Ω Vcc = 2. F=20kHz BW < 125kHz Tamb = 25 ° C F=1kHz 0.1 0.01 F=20Hz 1E-3 1E-3 0.01 Output Power ...

Page 22

Electrical characteristics Figure 86. SNR vs. power supply voltage with unweighted filter 110 RL=16 Ω 105 100 95 RL=4 Ω 2 μ THD+N < 0.7% Tamb = 25 ° 2.5 ...

Page 23

TS4994FC 4 Application information 4.1 Differential configuration principle The TS4994 is a monolithic full-differential input/output power amplifier. The TS4994 also includes a common mode feedback loop that controls the output bias value to average for any ...

Page 24

Application information the values following formula: with The result of the calculation must be in the range: If the result of the V used. Example: With V higher than 2.5V - 0.9V = 1.6V, so input coupling ...

Page 25

TS4994FC must introduce a mismatch factor (R performance. ● From 200Hz to 5kHz, the C compared with R this range, we can reach the PSRR performance of the TS4994 itself. ● From 5kHz to 20kHz, the C and the C ...

Page 26

Application information The three following graphs show PSRR versus frequency and versus bypass capacitor C worst-case conditions ( Figure 89. PSRR vs. frequency (worst case conditions) 0 -10 Vcc = 5V, Vripple = 200mVpp - Cin = ...

Page 27

TS4994FC The two following graphs show typical applications of the TS4994 with a random selection of Δ four R/R values with a 0.1% tolerance. Figure 92. PSRR vs. frequency with random choice condition 0 -10 Vcc = 5V, Vripple = ...

Page 28

Application information Figure 94. CMRR vs. frequency (worst case conditions) 0 Vcc = 5V -10 Vic = 200mVpp Cin = 470 μ F Δ R/R = 0.1%, RL ≥ 8 Ω -20 Tamb = 25 ° C ...

Page 29

TS4994FC and Therefore, the average current delivered by the supply voltage is: Equation 1 The power delivered by the supply voltage is: Therefore, the power dissipated by each amplifier is: Equation 2 and the maximum value is obtained when: and ...

Page 30

Application information To calculate the maximum ambient temperature T ● The value of the power supply voltage, V ● The value of the load resistor, R ● The R value for the package type thja Example 5V, R ...

Page 31

TS4994FC 4.10 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 32

... 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. Flip-chip package (9 bumps) Dimensions in millimeters unless otherwise indicated ...

Page 33

TS4994FC Figure 101. Dimensions 1.63 mm 1.63 mm 0.5mm 0.5mm 0.5mm 0.5mm Figure 102. Tape & reel dimensions 8 8 ● ● ● ● 1.63 mm 1.63 mm ● ● ● ● ● ∅ 0.25mm ∅ 0.25mm 100µm 100µm 600µm ...

Page 34

Revision history 6 Revision history Table 6. Document revision history Date 17-Mar-2005 12-Dec-2006 34/35 Revision 1 Initial release. 2 Template update. TS4994FC Changes ...

Page 35

... TS4994FC 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. ...

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