MAX9814ETD+T Maxim Integrated Products, MAX9814ETD+T Datasheet - Page 6
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MAX9814ETD+T
Manufacturer Part Number
MAX9814ETD+T
Description
IC AMP AUDIO MONO AB MIC 14TDFN
Manufacturer
Maxim Integrated Products
Type
Class ABr
Datasheet
1.MAX9814ETDT.pdf
(14 pages)
Specifications of MAX9814ETD+T
Output Type
1-Channel (Mono)
Voltage - Supply
2.7 V ~ 5.5 V
Features
AGC, Microphone, Shutdown
Mounting Type
Surface Mount
Package / Case
14-TDFN Exposed Pad
Product
General Purpose Audio Amplifiers
Thd Plus Noise
0.04 %
Operating Supply Voltage
2.7 V to 5.5 V
Supply Current
3.1 mA
Maximum Power Dissipation
1481 mW
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
- 40 C
Supply Voltage (max)
5.5 V
Supply Voltage (min)
2.7 V
Amplifier Class
AB
No. Of Channels
1
Supply Voltage Range
2.7V To 5.5V
Load Impedance
50ohm
Operating Temperature Range
-40°C To +85°C
Amplifier Case Style
TDFN
No. Of Pins
14
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Max Output Power X Channels @ Load
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
MAX9814ETD+T
MAX9814ETD+TTR
MAX9814ETD+TTR
Microphone Amplifier with AGC and
Low-Noise Microphone Bias
6
(V
T
A
DD
= +25°C, unless otherwise noted.)
_______________________________________________________________________________________
TDFN
= 5V, C
4, 11
500mV/div
PIN
10
12
13
14
—
V
1
2
3
5
6
7
8
9
MICOUT
0V
CT
= 470nF, C
MICBIAS
MICOUT
HOLD AND RELEASE TIME
NAME
MICIN
SHDN
GAIN
GND
BIAS
N.C.
V
A/R
CG
CT
TH
EP
DD
CG
40ms/div
= 2.2µF, V
Timing Capacitor Connection. Connect a capacitor to CT to control the Attack and Release times
of the AGC.
Active-Low Shutdown Control
Amplifier DC Offset Adjust. Connect a 2.2µF capacitor to GND to ensure zero offset at the output.
No Connection. Connect to GND.
Power Supply. Bypass to GND with a 1µF capacitor.
Amplifier Output
Ground
Microphone Noninverting Input
Tri-Level Attack and Release Ratio Select. Controls the ratio of attack time to release time for the
AGC circuit.
A/R = GND: Attack/Release Ratio is 1:500
A/R = V
A/R = Unconnected: Attack/Release Ratio is 1:4000
Tri-Level Amplifier Gain Control.
GAIN = V
GAIN = GND, gain set to 50dB.
GAIN = Unconnected, uncompressed gain set to 60dB.
Amplifier Bias. Bypass to GND with a 0.47µF capacitor.
Microphone Bias Output
AGC Threshold Control. TH voltage sets gain control threshold. Connect TH to MICBIAS to disable
the AGC.
Exposed Pad. Connect the TDFN EP to GND.
C
A/R = V
CT
TH
DD
= 47nF
DD
: Attack/Release Ratio is 1:2000
= V
DD
, gain set to 40dB.
MICBIAS
Typical Operating Characteristics (continued)
x 0.4, GAIN = V
DD
(40dB), AGC disabled, no load, R
FUNCTION
500mV/div
V
MICOUT
0V
HOLD AND RELEASE TIME
100ms/div
Pin Description
C
A/R = UNCONNECTED
CT
= 47nF
L
= 10kΩ, C
OUT
= 1µF,