MAX9716：Low-Cost, Mono, 1.4W BTL Audio Power Amplifiers

Low-Cost Speaker Amplifiers Offer Up to 1.3W into 4Ω, Headphone Sensing, and Pin-for-Pin Compatible Packaging

The MAX9716/MAX9717 audio power amplifiers are ideal for portable audio devices with internal speakers. A bridge-tied load (BTL) architecture minimizes external component count, while providing high-quality audio reproduction. Both devices deliver 1.4W continuous power into a 4Ω load with less than 1% Total Harmonic Distortion (THD) while operating from a single +5V supply. With an 8Ω load, both devices deliver 1W continuous power. These devices also deliver 350mW continuous power into an 8Ω load while operating from a single +3.0V supply. The devices are available as adjustable gain amplifiers (MAX9716/MAX9717A) or with internally fixed gains of 6dB, 9dB, and 12dB (MAX9717B/MAX9717C/MAX9717D), reducing component count. A low-power shutdown mode disables the bias generator and amplifiers, reducing quiescent current consumption to less than 10nA. These devices feature Maxim's industry-leading, comprehensive click-and-pop suppression that reduces audible clicks and pops during startup and shutdown. The MAX9717 features a headphone sense input (active-low BTL/SE) that senses when a headphone is connected to the device, disables the BTL slave driver, muting the speaker while driving the headphone as a single-ended load. The MAX9716 is pin compatible with the LM4890 and is available in 9-bump UCSP™, 8-pin TDFN (3mm x 3mm), and 8-pin µMAX® packages. The MAX9717 is available in 9-bump UCSP, 8-pin TDFN, and 8-pin µMAX packages. Both devices operate over the -40°C to +85°C extended temperature range.

Key Features

2.7V to 5.5V Single-Supply Operation
1.4W into 4Ω at 1% THD+N
10nA Low-Power Shutdown Mode
73dB PSRR at 1kHz
No Audible Clicks or Pops at Power-Up/Down
Internal Fixed Gain to Reduce Component Count (MAX9717B/C/D)
Adjustable Gain Option (MAX9716/MAX9717A)
Active-Low BTL/SE Input Senses when Headphones are Connected (MAX9717)
Pin Compatible with LM4890 (MAX9716)
Pin Compatible with TPA711 (MAX9717A)
Available in Compact, Thermally Enhanced µMAX and TDFN (3mm x 3mm) Packages

MAX9716, MAX9717: Pin Configuration

Applications/Uses

Mobile Phones
PDAs
Portable Devices

DataSheet

title	Download file
MAX9716-MAX9717 Data Sheet	MAX9716-MAX9717.pdf

Parametrics

Part Number	Class	Spkr. Amp. V_CC (V)	Spkr. Amp. V_CC (V)	Spkr. Amp. I_CC (mA)	P_OUT into 4Ω @ 1% THD+N (W)	P_OUT into 4Ω @ 10% THD+N (W)	P_OUT into 8Ω @ 1% THD+N (W)	P_OUT into 8Ω @ 10% THD+N (W)	Spkr. Amp. Half Pwr. THD+N (%)	SNR (dB)	PSRR (dB)	Package/Pins	Budgetary Price
Part Number	Class	min	max	typ	min	min	min	min	Spkr. Amp. Half Pwr. THD+N (%)	A- Weighted	min	Package/Pins	See Notes
MAX9716	AB	2.7	5.5	4.3	1.4	2	1.1	1.3	0.02	108	80	µMAX-EP/8 TDFN-EP/8 UCSP/9	$0.46 @1k
MAX9717	AB	2.7	5.5	4.3	1.4	2	1.1	1.3	0.02	108	80	TDFN-EP/8 UCSP/9	$0.36 @1k

Quality and Environmental Data

MAX9716.pdf

Ordering Information

Part Number	Status	Recommended Replacement	Package	Temp	RoHS
MAX9716EBL+G45	No Longer Available		UCSP,;9 pin;2.5 mm²	0°C to +70°C	Lead Free
MAX9716EBL+TG45	No Longer Available		UCSP,;9 pin;2.5 mm²	0°C to +70°C	Lead Free
MAX9716ETA+	Active		TDFN-EP,;8 pin;9.6 mm²	-40°C to +85°C	Lead Free
MAX9716ETA+T	Active		TDFN-EP,;8 pin;9.6 mm²	-40°C to +85°C	Lead Free
MAX9716ETA-T	No Longer Available	MAX9716ETA+T	TDFN-EP,;8 pin;9.6 mm²	-40°C to +85°C	No
MAX9716EUA+	Active		µMAX-EP,;8 pin;15.3 mm²	-40°C to +85°C	Lead Free
MAX9716EUA+T	Active		µMAX-EP,;8 pin;15.3 mm²	-40°C to +85°C	Lead Free