Audio Amp Microphone 1-CH Mono Class-AB 14-Pin TDFN EP T/R, MAX9814ETD+T, Maxim Integrated

The MAX9814 is a low-cost, high-quality microphone amplifier with automatic gain control (AGC) and low-noise microphone bias. The device features a low-noise preamplifier, variable gain amplifier (VGA), output amplifier, microphone-bias-voltage generator and AGC control circuitry. The low-noise preamplifier has a fixed 12dB gain, while the VGA gain automatically adjusts from 20dB to 0dB, depending on the output voltage and the AGC threshold. The output amplifier offers selectable gains of 8dB, 18dB, and 28dB. With no compression, the cascade of the amplifiers results in an overall gain of 40dB, 50dB, or 60dB. A trilevel digital input programs the output amplifier gain. An external resistive divider controls the AGC threshold and a single capacitor programs the attack/release times. A trilevel digital input programs the ratio of attack-to-release time. The hold time of the AGC is fixed at 30ms. The low-noise microphone-bias-voltage generator can bias most electret microphones. The MAX9814 is available in the space-saving, 14-pin TDFN package. This device is specified over the -40°C to +85°C extended temperature range.

  • Automatic Gain Control (AGC)
  • Three Gain Settings (40dB, 50dB, 60dB)
  • Programmable Attack Time
  • Programmable Attack and Release Ratio
  • 2.7V to 5.5V Supply Voltage Range
  • Low Input-Referred Noise Density of 30nV/vHz
  • Low THD: 0.04% (typ)
  • Low-Power Shutdown Mode
  • Internal Low-Noise Microphone Bias, 2V
  • Available in the Space-Saving, 14-Pin TDFN (3mm x 3mm) Package
  • -40°C to +85°C Extended Temperature Range

Характеристики

Бренд

Mounting

Surface Mount

Pin_count

14

Output_signal_type

Single-Ended

Output_current

100 mA

Operating_temperature

-40 to 85 °C

Operating_supply_current

6@3.3V

Msl_level

1

Schedule_b

8542330000

Max_processing_temp

235, 300

Specifications

https://4donline.ihs.com/images/VipMasterIC/IC/MAXM/MAXM-S-A0002785720/MAXM-S-A0002785720-1.pdf?hkey=52A5661711E402568146F3353EA87419

Max_power_dissipation

1481.5 mW

Lead_finish

Matte Tin

Htsn

8542330001

Eccn

EAR99

Country_of_origin

Taiwan

Screening_level

Extended

Supplier_package

TDFN EP

Product_dimensions

3.1 x 3.1 x 0.75 mm

Артикул: MAX9814ETD+T

Описание

The MAX9814 is a low-cost, high-quality microphone amplifier with automatic gain control (AGC) and low-noise microphone bias. The device features a low-noise preamplifier, variable gain amplifier (VGA), output amplifier, microphone-bias-voltage generator and AGC control circuitry. The low-noise preamplifier has a fixed 12dB gain, while the VGA gain automatically adjusts from 20dB to 0dB, depending on the output voltage and the AGC threshold. The output amplifier offers selectable gains of 8dB, 18dB, and 28dB. With no compression, the cascade of the amplifiers results in an overall gain of 40dB, 50dB, or 60dB. A trilevel digital input programs the output amplifier gain. An external resistive divider controls the AGC threshold and a single capacitor programs the attack/release times. A trilevel digital input programs the ratio of attack-to-release time. The hold time of the AGC is fixed at 30ms. The low-noise microphone-bias-voltage generator can bias most electret microphones. The MAX9814 is available in the space-saving, 14-pin TDFN package. This device is specified over the -40°C to +85°C extended temperature range.

  • Automatic Gain Control (AGC)
  • Three Gain Settings (40dB, 50dB, 60dB)
  • Programmable Attack Time
  • Programmable Attack and Release Ratio
  • 2.7V to 5.5V Supply Voltage Range
  • Low Input-Referred Noise Density of 30nV/vHz
  • Low THD: 0.04% (typ)
  • Low-Power Shutdown Mode
  • Internal Low-Noise Microphone Bias, 2V
  • Available in the Space-Saving, 14-Pin TDFN (3mm x 3mm) Package
  • -40°C to +85°C Extended Temperature Range

Детали

Бренд

Mounting

Surface Mount

Pin_count

14

Output_signal_type

Single-Ended

Output_current

100 mA

Operating_temperature

-40 to 85 °C

Operating_supply_current

6@3.3V

Msl_level

1

Schedule_b

8542330000

Max_processing_temp

235, 300

Specifications

https://4donline.ihs.com/images/VipMasterIC/IC/MAXM/MAXM-S-A0002785720/MAXM-S-A0002785720-1.pdf?hkey=52A5661711E402568146F3353EA87419

Max_power_dissipation

1481.5 mW

Lead_finish

Matte Tin

Htsn

8542330001

Eccn

EAR99

Country_of_origin

Taiwan

Screening_level

Extended

Supplier_package

TDFN EP

Product_dimensions

3.1 x 3.1 x 0.75 mm