electrical characteristics   ；
test condition (vs=2.0v rl=2.2k? ta=20 r.h.=65%)℃；
item symbol test conditions minimum standard maximum unit;
*sensitivity s
pin=1pa , f=1khz
bias voltage 2.0v. after 2 reflows
-45 -42 -39 db
output impedance zout pin=1pa , f=1khz 1.4 1.8 2.2 kω
directivity omni directional
current consumption i vs=4.0v, rl=2.2kω   500 μa
s/n ratio (a) s/n (a) pin=1pa, f=1khz(a curve) 58   db
decreasing voltage
characteristic
△s
pin=1pa , f=1khz  
vs=2.0~1.5v
-46 -43 -40 db
operating voltage  dc 1.1 2.0 6.0 v
noise floor
(input related
noise maximum)
conditions: 1. no electro ic
interference effects; 2. no acoustic
stimulation;3 bias voltage 2.0v.
  36
dbspl
(a)
f=1khz, distortion≤1%   100
f=1khz, distortion≤5%   115
maximal input
sound pressure level
mispl
f=1khz, distortion≤10%   120
dbspl
typical frequency response curve

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