北京东微世纪科技有限公司 URL:http://www.eastmicrotech.com Eastmicro Technology Tel: 86-10-82896580 Fax:86-10-82896195 2.65W Mono CLASS-D Audio Power Amplifier EMT7026 DESCRIPTION The EMT7026 is a Mono CLASS-D power amplifier designed for cellular phone applications, maximum output power can reach up to 2.65W(VDD=5V,RL=4Ω，THD=10%) and 1.2W (VDD = 5V, RL = 8Ω，THD = 1%).The uniquely designed class D system structure and circuits by Eastmicro Technology, along with the most advanced mixed signal CMOS process technology, provide a product with high efficiency (>86%) low distortion and high reliability. EMT7026’s external circuitry is simple and easily accessible, and consists of flawless self-protection capabilities. The chip’s packaging is small, thus it occupies an insignificant amount of space on the circuit board; therefore, making it the predominant choice when it comes to cellular phone audio amplifiers. FEATURES • CMOS Technology •Ultra low quiescent current 2.3mA • Operating voltage range from 2.7V up to 5.5V • THD+N =0.06% @5V, 8 Ohm load, Po=400mW • Maximum output power 2.65W(4 Ω ) @ THD=10% • Output low-pass LC filter is not required • Voltage gain determined by the external resistor • Contains shutdown function • POP noises free in shutdown and power ON/OFF period • Built-in short circuit protection • Built-in overheat protection • High efficiency (88%), low heat dissipation • CSP-9 Pin package APPLICATIONS • Cellular Phone • Portable Media Player • GPS • LCD Monitor • Small multimedia speakers • Hand-free phone • Laptop • Other audio applications EMT7026 1 January,2008 北京东微世纪科技有限公司 URL:http://www.eastmicrotech.com Eastmicro Technology Tel: 86-10-82896580 Fax:86-10-82896195 2.65W Mono CLASS-D Audio Power Amplifier EMT7026 PIN CONFIGURATION PIN DESCRIPTION Pin No. Type Description CSP Symbol A1 INP I Positive Differential Input. A2 GND I Analog Ground. A3 OUTM O Negative BTL Output. B1 Vp I Analog Positive Supply. Range: 2.7V-5.5V. B2 Vp I Power Analog Positive Supply. Range:2.7V-5.5V. B3 GND I Analog Ground. C1 INM I Negative Differential Input. ___ C2 SD The device enters in Shutdown Mode when a low level is applied on I this pin. An internal 300 kΩ resistor will force the device in shutdown mode if no signal is applied to this pin. It also helps to save space and cost. C3 EMT7026 OUTP O Positive BTL Output. 2 January,2008 北京东微世纪科技有限公司 URL:http://www.eastmicrotech.com Eastmicro Technology Tel: 86-10-82896580 Fax:86-10-82896195 2.65W Mono CLASS-D Audio Power Amplifier EMT7026 RECOMMENDED OPERATING CONDITIONS MIN Supply voltage ,VDD NOM MAX UNIT 2.7 5.5 V ____________ SHUTDOWN 2 VDD V ____________ SHUTDOWN 0 0.8 V Input resistor,RI Gain≤20V/V(26dB) 15 Common mode input voltage range, VIC VDD=2.7V,5.5V, CMRR≤-49dB 0.5 VDD-0.8 V -40 85 ℃ High-level input voltage, VIH Low-level input voltage, VIL Operating free-air temperature, TA KΩ ELECTRICA CHARACTERISTICS TA=25℃(unless otherwise noted) PAPAMETER V OSI PSRR Output offset voltage (measured differentially) Power supply rejection ratio CMRR Common mode rejection ratio TEST CONDITIONS VI=0V,AV=2V/V, 5.5V VDD=2.7V MIN TYP MAX UNIT to 1 20 mV VDD=2.7V to 5.5V -75 -55 dB VDD=2.7V to 5.5V, VIC=VDD/2 to 0.5V VIC=VDD/2 toVDD-0.8V -57 -49 dB IIH High-level input current VDD=5.5V, VI=5.8V 50 μA IIL Low-level input current VDD=5.5V, VI=0.3V 1 μA VDD=5.5V 2.3 4 I(Q) Quiescent current VDD=3.6V 1.7 I(SD) Shutdown current V(SHUTDOWN) =0.8V, VDD=2.7V to 5.5v 0.5 1 250 300 KHz 510kΩ RI 535kΩ RI V V F(SW) Switching frequency VDD=2.7V to 5.5V 200 485kΩ RI Gain EMT7026 3 mA μA January,2008 北京东微世纪科技有限公司 URL:http://www.eastmicrotech.com Eastmicro Technology Tel: 86-10-82896580 Fax:86-10-82896195 2.65W Mono CLASS-D Audio Power Amplifier EMT7026 APPICATION CIRCUIT DIAGRAM Figure1 EMT7026 differential input with input capacitors Figure2 EMT7026 single_ended input configuration EMT7026 4 January,2008 北京东微世纪科技有限公司 URL:http://www.eastmicrotech.com Eastmicro Technology Tel: 86-10-82896580 Fax:86-10-82896195 2.65W Mono CLASS-D Audio Power Amplifier EMT7026 NOTES： 1. Unless otherwise noted, Ci = 100 nF and Ri= 150 K input high pass filter is set to 10 Hz. Input capacitors are shorted for CMRR measurements. 2. To closely reproduce a real application case, all measurements are performed using the following loads: RL = 8 ohm means Load = 15 uH + 8 ohm + 15 uH RL = 4 ohm means Load = 15 uH + 4 ohm + 15 uH Very low DCR 15 mH inductors (50 mW) have been used for the following graphs. Thus, the electrical load measurements are performed on the resistor (8 ohm or 4 ohm) in differential mode. EMT7026 5 January,2008 北京东微世纪科技有限公司 URL:http://www.eastmicrotech.com Eastmicro Technology Tel: 86-10-82896580 Fax:86-10-82896195 2.65W Mono CLASS-D Audio Power Amplifier EMT7026 Typical Performance Characteristics Fig.4 THD+N vs.Output Power f=1kHz, Rl=8ohm, VDD=5 Audio Precision 11/22/07 13:49:52 100 50 20 10 5 2 1 % 0.5 0.2 0.1 0.05 0.02 0.01 7m 10m 20m 50m 100m 200m 500m 1 W Sweep Trace Color Line Style Thick Data Axis 1 1 Cyan Solid 1 .Analyzer.THD+N Ratio A Left Comment 071121.ats2 Fig.5 THD+N vs. Output power f=1kHz, Rl=8 ohm, VDD=3.6V Audio Precision 11/22/07 13:52:45 100 50 20 10 5 2 % 1 0.5 0.2 0.1 0.05 0.02 0.01 10m 20m 50m 100m 200m 500m 1 2 W Sweep Trace Color Line Style Thick Data Axis 1 1 Cyan Solid 1 Analyzer.THD+N Ratio A Left Comment 071121.ats2 EMT7026 6 January,2008 北京东微世纪科技有限公司 URL:http://www.eastmicrotech.com Eastmicro Technology Tel: 86-10-82896580 Fax:86-10-82896195 2.65W Mono CLASS-D Audio Power Amplifier EMT7026 Fig.6 THD+N vs. frequency Rl=8ohm, Po=250mW,VDD=5V Audio Precision 11/22/07 13:57:56 100 50 20 10 5 2 % 1 0.5 0.2 0.1 0.05 0.02 0.01 20 50 100 200 500 1k 2k 5k 10k 20k Hz Sweep Trace Color Line Style Thick Data 1 1 Cyan Solid 1 Analyzer.THD+N Ratio A Left Axis Comment 071121.ats2 Fig.7 THD+N vs. frequency Rl=8ohm, Po=1W,VDD=5V Audio Precision 11/22/07 14:01:02 100 50 20 10 5 2 % 1 0.5 0.2 0.1 0.05 0.02 0.01 20 50 100 200 500 1k 2k 5k 10k 20k Hz Sweep Trace Color Line Style Thick Data Axis 1 1 Cyan Solid 1 Analyzer.THD+N Ratio A Left Comment 071121.ats2 EMT7026 7 January,2008 北京东微世纪科技有限公司 URL:http://www.eastmicrotech.com Eastmicro Technology Tel: 86-10-82896580 Fax:86-10-82896195 2.65W Mono CLASS-D Audio Power Amplifier EMT7026 Fig.8 CMRR vs. frequency VDD=3.6V, Vinc=1Vpp, f=217Hz A ud io P re c is io n 1 1 /2 2 /0 7 1 0 :3 7 :2 7 dx=-802.38 Hz +0 dy=+0.520 dB -10 -20 -30 d B V -40 -50 -52.526 -53.046 -60 -70 -80 -90 20 50 100 200 500 1.00238k 1k 2k 5k 10k 20k Hz Sw eep Tra c e C o lo r L in e S tyle Th ic k D a ta Axis 1 1 C ya n S o lid 1 An a lyze r.Am p litu d e A L e ft 0 7 1 1 2 1 .a ts 2 Fig.9 CMRR FFT: Audio Precision 11/22/07 10:30:25 dx=-187.39 Hz dy=-59.674 dB +0 -25 -50 -52.679 d -75 B -100 V -112.353 -125 -150 -175 2028.0322 50 100 215.421 200 500 1k 2k 5k 10k 20k Hz Sweep Trace Color Line Style Thick Data Axis 1 1 Cyan Solid 1 FFT.ChA Amplitude Left Comment Cursor1 *-52.679 dBV 071121.ats2 EMT7026 8 January,2008 北京东微世纪科技有限公司 URL:http://www.eastmicrotech.com Eastmicro Technology Tel: 86-10-82896580 Fax:86-10-82896195 2.65W Mono CLASS-D Audio Power Amplifier EMT7026 Fig.10 PSRR FFT A ud io P re c is io n dx=6.76427 kHz +0 d B V 1 1 /2 2 /0 7 1 1 :3 3 :4 4 dy=+21.522 dB +0 -10 -10 -20 -20 -30 -30 -40 -40 -50 -50 -60 -60 -70 -70 -75.222 -80 -80 -90 -90 -96.743 -100 -100 -110 -110 -120 20 50 100 215.499 200 500 1k 2k 6.97977k 5k 10k 20k d B V -120 Hz Sw eep Tra ce C o lo r L in e S tyle Th ick D a ta Axis 1 1 1 2 C ya n G re e n S o lid S o lid 1 1 FFT.C h A Am p litu d e FFT.C h B Am p litu d e L e ft R ig h t Com m ent 0 7 1 1 2 1 .a ts 2 Fig.11 EMI Measurement result EMT7026 9 January,2008 北京东微世纪科技有限公司 URL:http://www.eastmicrotech.com Eastmicro Technology Tel: 86-10-82896580 Fax:86-10-82896195 2.65W Mono CLASS-D Audio Power Amplifier EMT7026 Fig.12 Efficiency vs. Output Power (VDD=5V, Rl=4ohm) Fig.13 Efficiency vs. Output Power (VDD=5V, Rl=8ohm) Fig.14 Quiescent Current vs. Power Supply EMT7026 10 January,2008 北京东微世纪科技有限公司 URL:http://www.eastmicrotech.com Eastmicro Technology Tel: 86-10-82896580 Fax:86-10-82896195 2.65W Mono CLASS-D Audio Power Amplifier EMT7026 ORDER INFORMATIONS Valid Part Number EMT7026 Pack Type Top Code CSP-9 Pin EMT7026 NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982 2. CONTROLLING DIMENSION: MILLIMETERS. 3. COPLANARITY APPLIES TO SPHERICAL CROWNS OF SOLDER BALLS. MIN A 0.540 0.660 A1 0.210 0.270 A2 0.330 0.390 D 1.453 BSC E 1.453 BSC b EMT7026 11 MILLIMETERS MAX DIM 0.290 0.340 e 0.500 BSC D1 1.000 BSC E1 1.000 BSC January,2008