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SA58670ABS
2.1 W/channel stereo class-D audio amplifier
General descriptionThe SA58670A is a stereo, filter-free class-D audio amplifier which is available in an
HVQFN20 package with the exposed Die Attach Paddle (DAP).
The SA58670A features independent shutdown controls for each channel. The gain may setat6 dB,12 dB,18 dBor24 dB with gain select pins G0 and G1. Improved immunity
to noise and RF rectification is increased by high PSRR and differential circuit topology.
Fast start-up time and small package makes it an ideal choice for both cellular handsets
and PDAs.
The SA58670A delivers 1.4 W/channel at 5.0 V and 720 mW/channel at 3.6 V into 8 Ω. It
delivers 2.1 W/channel at 5.0 V into 4 Ω. The maximum power efficiency is excellent at % to 74 % into 4 Ω and 84 % to 88 % into 8 Ω. The SA58670A provides thermal and
short-circuit shutdown protection.
Features Output power: 2.1 W/channel into 4 Ω at 5.0V 1.4 W/channel into 8 Ω at 5.0V 720 mW/channel into 8 Ω at 3.6V Supply voltage: 2.5 V to 5.5V Independent shutdown control for each channel Selectable gain: 6 dB, 12 dB, 18 dB and 24 dB High SVRR: −77 dB at 217 Hz Fast start-up time: 3.5 ms Low supply current Low shutdown current Short-circuit and thermal protection Space savings with 4 mm×4 mm HVQFN20 package Low junction to ambient thermal resistance of 24 K/W with exposed DAP
Applications Wireless and cellular handset and PDA Portable DVD player USB speaker Notebook PC Portable radio and gaming
SA58670A
2.1 W/channel stereo class-D audio amplifier
Rev. 02 — 23 October 2008 Product data sheet
NXP Semiconductors SA58670A
2.1 W/channel stereo class-D audio amplifier Educational toy
Ordering information Block diagram
Table 1. Ordering informationSA58670ABS HVQFN20 plastic thermal enhanced very thin quad flat package; leads; 20 terminals; body 4×4× 0.85 mm
SOT917-1
NXP Semiconductors SA58670A
2.1 W/channel stereo class-D audio amplifier Pinning information
6.1 Pinning
6.2 Pin description
Table 2. Pin description 1 gain select input 1
OUTLP 2 left channel positive output
PVDD 3 power supply voltage (level same as AVDD)
PGND 4 power ground
OUTLN 5 left channel negative output
n.c. 6 not connected
SDL 7 left channel shutdown input (active LOW)
SDR 8 right channel shutdown input (active LOW)
AVDD 9 analog supply voltage (level same as PVDD)
n.c. 10 not connected
OUTRN 11 right channel negative output
PGND 12 power ground
PVDD 13 power supply voltage (level same as AVDD)
OUTRP 14 right channel positive output 15 gain select input 0
INRP 16 right channel positive input
INRN 17 right channel negative input
AGND 18 analog ground
NXP Semiconductors SA58670A
2.1 W/channel stereo class-D audio amplifier Limiting values[1] VDD is the supply voltage on pins PVDD and pin AVDD.
GND is the voltage ground on pins PGND and pin AGND.
INLN 19 left channel negative input
INLP 20 left channel positive input (DAP) exposed die attach paddle; connect to ground plane heat spreader
Table 2. Pin description …continued
Table 3. Limiting valuesIn accordance with the Absolute Maximum Rating System (IEC 60134).[1]
VDD supply voltage Active mode −0.3 +6.0 V
Shutdown mode −0.3 +7.0 V input voltage pin SDL GND VDD V
pin SDR GND VDD V
other pins −0.3 VDD+ 0.3 V power dissipation derating factor 41.6 mW/K
Tamb =25°C - 5.2 W
Tamb =75°C - 3.12 W
Tamb =85°C - 2.7 W
Tamb ambient temperature operating in free air −40 +85 °C junction temperature operating −40 +150 °C
Tstg storage temperature −65 +85 °C
Vesd electrostatic discharge
voltage
human body model ±2000 - V
machine model ±200 - V
NXP Semiconductors SA58670A
2.1 W/channel stereo class-D audio amplifier Static characteristics[1] VDD is the supply voltage on pins PVDD and pin AVDD.
GND is the ground supply voltage on pins PGND and pin AGND.
Table 4. Static characteristicsTamb =25 °C; unless otherwise specified[1]
VDD supply voltage operating 2.5 - 5.5 V
IDD supply current VDD= 2.5 V; no load - 4 6 mA
VDD= 3.6 V; no load - 5 7.5 mA
VDD= 5.5 V; no load - 6 9 mA
IDD(sd) shutdown mode supply current no input signal;
VSDR =VSDL= GND 10 1000 nA
PSRR power supply rejection ratio VDD= 2.5Vto 5.5V - −75 −55 dB
Vi(cm) common-mode input voltage 0.5 - VDD− 0.8 V
CMRR common mode rejection ratio inputs are shorted together;
VDD= 2.5Vto 5.5V −69 −50 dB
VIH HIGH-level input voltage VDD= 2.5 V to 5.5V;
pins SDL, SDR, G0, G1
1.3 - VDD V
VIL LOW-level input voltage VDD= 2.5 V to 5.5V;
pins SDL, SDR, G0, G1 - 0.35 V
IIH HIGH-level input current VDD= 5.5 V; VI =VDD --50 μA
IIL LOW-level input current VDD= 5.5 V; VI=0V --5 μA
fsw switching frequency VDD= 2.5 V to 5.5V 250 300 350 kHz
Gv(cl) closed-loop voltage gain VG0 = VG1 = 0.35V 5.5 6 6.5 dB
VG0 = VDD; VG1 = 0.35V 11.5 12 12.5 dB
VG0 = 0.35 V; VG1 = VDD 17.5 18 18.5 dB
VG0 = VG1 = VDD 23.5 24 24.5 dB
Pins OUTLP, OUTLN, OUTRP and OUTRNRDSon drain-source on-state resistance VDD= 2.5V - 700 - mΩ
VDD= 3.6V - 570 - mΩ
VDD= 5.5V - 500 - mΩ
|VO(offset)| output offset voltage measureddifferentially;inputs
AC grounded; Gv(cl)=6 dB;
VDD= 2.5Vto 5.5V 5 10 mV
Zo(sd) shutdown mode output impedance VSDR = VSDL = 0.35V - 2 - kΩ
NXP Semiconductors SA58670A
2.1 W/channel stereo class-D audio amplifier Dynamic characteristics[1] VDD is the supply voltage on pins PVDD and pin AVDD.
Table 5. Dynamic characteristicsTamb =25 °C; RL =8 Ω; unless otherwise specified[1] output power per channel; f=1 kHz; THD+N=10% =8 Ω; VDD= 3.6V - 0.72 - W =8 Ω; VDD = 5.0V - 1.4 - W =4 Ω; VDD= 5.0V - 2.1 - W
THD+N total harmonic
distortion-plus-noise
VDD= 5.0 V; Gv(cl)=6 dB; f=1kHz= 0.5W - 0.11 - %= 1.0W - 0.14 - %
SVRR supply voltage ripple
rejection
Gv(cl)=6 dB; f= 217Hz
VDD= 3.6V - −73 - dB
VDD= 5.0V - −77 - dB
CMRR common mode rejection
ratio
VDD= 5.0 V; Gv(cl)=6 dB; f= 217Hz - −69 - dB input impedance Gv(cl)=6dB - 28.1 - kΩ
Gv(cl)=12dB - 17.3 - kΩ
Gv(cl)=18dB - 9.8 - kΩ
Gv(cl)=24dB - 5.2 - kΩ
td(sd-startup) delay time from
shutdown to start-up
VDD= 3.6V - 3.5 - ms
Vn(o) output noise voltage VDD= 3.6 V; f=20Hzto20 kHz;
inputs are AC grounded
no weighting - 35 - μV
A weighting - 27 - μV
NXP Semiconductors SA58670A
2.1 W/channel stereo class-D audio amplifier
10. Typical performance curves
NXP Semiconductors SA58670A
2.1 W/channel stereo class-D audio amplifier
NXP Semiconductors SA58670A
2.1 W/channel stereo class-D audio amplifier
NXP Semiconductors SA58670A
2.1 W/channel stereo class-D audio amplifier
NXP Semiconductors SA58670A
2.1 W/channel stereo class-D audio amplifier
NXP Semiconductors SA58670A
2.1 W/channel stereo class-D audio amplifier
