MAX9719：Low-Cost, Mono/Stereo, 1.4W Differential Audio Power Amplifiers
Low-Cost, Mono/Stereo, 1.4W Differential Audio Power Amplifiers Ideal for Portable Audio Devices with Internal Speakers
The MAX9718/MAX9719 differential input audio power amplifiers are ideal for portable audio devices with internal speakers. The differential input structure improves noise rejection and provides common-mode rejection. A bridge-tied load (BTL) architecture minimizes external component count, while providing high-quality, power audio amplification. The MAX9718 is a single-channel amplifier while the MAX9719 is a dual-channel amplifier for stereo systems. Both devices deliver 1.4W continuous average power per channel to a 4Ω load with less than 1% THD+N while operating from a single +5V supply. The devices are available as adjustable gain amplifiers or with internally fixed gains of 0dB, 3dB, and 6dB to reduce component count. A shutdown input disables the bias generator and amplifiers and reduces quiescent current consumption to less than 100nA. The MAX9718 shutdown input can be set as active high or active low. These devices feature Maxim's comprehensive click-and-pop suppression circuitry that reduces audible clicks and pops during startup and shutdown. The MAX9718 is pin compatible with the LM4895, and is available in 9-bump UCSP™, 10-pin TDFN, and 10-pin µMAX® packages. The MAX9719 is available in 16-pin TQFN, 16-pin TSSOP, and 16-bump UCSP packages. Both devices operate over the -40°C to +85°C extended temperature range.
Key Features
| MAX9718, MAX9719: Block Diagram Applications/Uses
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DataSheet
| title | Download file |
|---|---|
| MAX9718-MAX9719 Data Sheet | MAX9718-MAX9719.pdf |
Parametrics
| Part Number | Class | Spkr. Amp. VCC (V) | Spkr. Amp. VCC (V) | Spkr. Amp. ICC (mA) | POUT into 4Ω @ 1% THD+N (W) | POUT into 4Ω @ 10% THD+N (W) | POUT into 8Ω @ 1% THD+N (W) | POUT into 8Ω @ 10% THD+N (W) | Spkr. Amp. Half Pwr. THD+N (%) | SNR (dB) | PSRR (dB) | Package/Pins | Budgetary Price |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| min | max | typ | min | min | min | min | A- Weighted | min | See Notes | ||||
| MAX9718 | AB | 2.7 | 5.5 | 5 | 1.4 | 1.7 | 1.1 | 1.3 | 0.025 | 107 | 93 | µMAX-EP/10 TDFN-EP/10 UCSP/9 | $0.31 @1k |
| MAX9719 | TQFN/16 UCSP/16 | $0.50 @1k | |||||||||||
Design kits & evaluation modules
Ordering Information
| Part Number | Status | Recommended Replacement | Package | Temp | RoHS |
|---|---|---|---|---|---|
| MAX9719AEBE+ | Active | UCSP,;16 pin;4.3 mm² | 0°C to +70°C | Lead Free | |
| MAX9719AEBE+T | Active | UCSP,;16 pin;4.3 mm² | -40°C to +85°C | Lead Free | |
| MAX9719AEBE-T | No Longer Available | MAX9719AEBE+T | UCSP,;16 pin;4.3 mm² | 0°C to +70°C | No |
| MAX9719AETE | No Longer Available | MAX9719AETE+ | TQFN,;16 pin;16.8 mm² | -40°C to +85°C | No |
| MAX9719AETE+ | Active | TQFN,;16 pin;16.8 mm² | -40°C to +85°C | Lead Free | |
| MAX9719AETE+T | Active | TQFN,;16 pin;16.8 mm² | -40°C to +85°C | Lead Free | |
| MAX9719AETE-T | No Longer Available | MAX9719AETE+T | QFN;16 pin | -40°C to +85°C | See data sheet |
| MAX9719BEBE+T | No Longer Available | UCSP,;16 pin;4.3 mm² | 0°C to +70°C | Lead Free | |
| MAX9719BEBE-T | No Longer Available | UCSP,;16 pin;4.3 mm² | 0°C to +70°C | No | |
| MAX9719BETE | No Longer Available | MAX9719BETE+ | TQFN,;16 pin;16.8 mm² | -40°C to +85°C | No |
| Part Number | Status | Recommended Replacement | Package | Temp | RoHS |
| MAX9719BETE+ | Active | TQFN,;16 pin;16.8 mm² | -40°C to +85°C | Lead Free | |
| MAX9719BETE+T | No Longer Available | QFN;16 pin | -40°C to +85°C | See data sheet | |
| MAX9719BETE-T | No Longer Available | QFN;16 pin | -40°C to +85°C | See data sheet | |
| MAX9719CEBE+T | No Longer Available | UCSP,;16 pin;4.3 mm² | 0°C to +70°C | Lead Free | |
| MAX9719CEBE-T | No Longer Available | UCSP,;16 pin;4.3 mm² | 0°C to +70°C | No | |
| MAX9719CETE | No Longer Available | MAX9719CETE+ | TQFN,;16 pin;16.8 mm² | -40°C to +85°C | No |
| MAX9719CETE+ | Active | TQFN,;16 pin;16.8 mm² | -40°C to +85°C | Lead Free | |
| MAX9719CETE+T | No Longer Available | QFN;16 pin | -40°C to +85°C | See data sheet | |
| MAX9719CETE-T | No Longer Available | QFN;16 pin | -40°C to +85°C | See data sheet | |
| MAX9719DEBE+ | Active | UCSP,;16 pin;4.3 mm² | 0°C to +70°C | Lead Free | |
| Part Number | Status | Recommended Replacement | Package | Temp | RoHS |
| MAX9719DEBE+T | Active | UCSP,;16 pin;4.3 mm² | 0°C to +70°C | Lead Free | |
| MAX9719DEBE+TG45 | Active | UCSP,;16 pin;4.3 mm² | -40°C to +85°C | Lead Free | |
| MAX9719DEBE-T | No Longer Available | MAX9719DEBE+T | UCSP,;16 pin;4.3 mm² | 0°C to +70°C | No |
| MAX9719DETE | No Longer Available | MAX9719DETE+ | TQFN,;16 pin;16.8 mm² | -40°C to +85°C | No |
| MAX9719DETE+ | Active | TQFN,;16 pin;16.8 mm² | -40°C to +85°C | Lead Free | |
| MAX9719DETE+T | No Longer Available | QFN;16 pin | -40°C to +85°C | See data sheet | |
| MAX9719DETE-T | No Longer Available | QFN;16 pin | -40°C to +85°C | See data sheet |
- MAX9718-MAX9719.pdf MAX9719
- MAX9718-MAX9719_cn.pdf MAX9719
- MAX9718-MAX9719_cn.pdf MAX9719
