Datasheet

MAX4465–MAX4469
Low-Cost, Micropower, SC70/SOT23-8, Microphone
Preamplifiers with Complete Shutdown
_______________________________________________________________________________________ 3
-140
-120
-100
-80
-60
-40
-20
0
20
40
60
80
100
120
140
MAX4465/MAX4467/MAX4469
GAIN AND PHASE vs. FREQUENCY (NO LOAD)
FREQUENCY (Hz)
10.1 1k 10k 100k10 100 1M
GAIN (dB)/PHASE (DEGREES)
MAX4465-69 toc01
-160
-140
-120
-100
-80
-60
-40
0
-20
20
40
60
80
100
120
140
MAX4466/MAX4468 GAIN AND PHASE
vs. FREQUENCY (NO LOAD)
FREQUENCY (Hz)
GAIN (dB)/PHASE (DEGREES)
MAX4465-69 toc02
1 1k 10k 100k10 100 1M
-140
-120
-100
-80
-60
-40
-20
0
20
40
60
80
100
120
140
MAX4465/MAX4467/MAX4469
GAIN AND PHASE vs. FREQUENCY (C
L
= 100pF)
FREQUENCY (Hz)
10.1 1k 10k 100k10 100 1M
GAIN (dB)/PHASE (DEGREES)
MAX4465-69 toc03
Note 1: All specifications are 100% production tested at T
A
= +25°C. All temperature limits are guaranteed by design.
Note 2: Shutdown mode is available only on the MAX4467/MAX4468.
Note 3: External feedback networks not considered.
ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= +5V, V
CM
= 0, V
OUT
= V
CC
/2, R
L
= ∞ to V
CC
/2, SHDN = GND (MAX4467/MAX4468 only), T
A
= T
MIN
to T
MAX
, unless otherwise
noted. Typical values specified at T
A
= +25°C.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Channel-to-Channel Isolation MAX4469 only, f = 1kHz 85 dB
Phase Margin Ø
M
R
L
= 100kΩ 70
d egr ees
Gain Margin R
L
= 100kΩ 20 dB
MAX4465/MAX4467/
MAX4469,
A
V
= +1
45
Slew Rate SR Output step = 4V
MAX4466/MAX4468,
A
V
= +5
300
mV/µs
Input Noise Voltage Density e
n
f = 1kHz 80 nV/√Hz
M AX 4465/M AX 4467/
M AX 4469
0.02
Total Harmonic Distortion THD
f = 1kHz, R
L
= 10kΩ,
V
OUT
= 2Vp-p
MAX4466/MAX4468 0.03
%
MAX4465/MAX4467/MAX4469, A
V
= +1 100
Capacitive Load Stability C
LOAD
MAX4466/MAX4468, A
V
= +5 100
pF
SHDN Delay Time t
SHDN
(Note 2) 1 µs
Enable Delay Time t
EN
(Note 2) 50 µs
Power-On Time t
ON
(Note 2) 40 µs
Bias Switch On-Resistance R
S
I
S
= 5mA (Note 2) 20 500 Ω
Typical Operating Characteristics
(V
CC
= +5V, V
CM
= 0, V
OUT
= V
CC
/2, R
L
= 100kΩ to V
CC
/2, SHDN = GND (MAX4467/MAX4468 only), T
A
= +25°C, unless otherwise
noted.)