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)

1

0.1

1k

10k 100k

10

100

1M

-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)

1

1k

10k

100k

10

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 (CL = 100pF)

FREQUENCY (Hz)

1

0.1

1k

10k 100k

10

100

1M

Note 1: All specifications are 100% production tested at TA = +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)

(VCC = +5V, VCM = 0V, VOUT = VCC/2, RL = ∞ to VCC/2, SHDN = GND (MAX4467/MAX4468 only), TA = TMIN to TMAX, unless other-

wise noted. Typical values specified at TA = +25°C.) (Note 1)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Channel-to-Channel Isolation

MAX4469 only, f = 1kHz

85

dB

Phase Margin

ØM

RL = 100k

Ω

70

degrees

Gain Margin

RL = 100k

Ω

20

dB

MAX4465/MAX4467/

MAX4469,

AV = +1

45

Slew Rate

SR

Output step = 4V

MAX4466/MAX4468,

AV = +5

300

mV/

µs

Input Noise Voltage Density

en

f = 1kHz

80

nV/

√Hz

MAX4465/MAX4467/

MAX4469

0.02

Total Harmonic Distortion

THD

f = 1kHz, RL = 10k

Ω,

VOUT = 2Vp-p

MAX4466/MAX4468

0.03

%

MAX4465/MAX4467/MAX4469, AV = +1

100

Capacitive Load Stability

CLOAD

MAX4466/MAX4468, AV = +5

100

pF

SHDN Delay Time

tSHDN

(Note 2)

1

µs

Enable Delay Time

tEN

(Note 2)

50

µs

Power-On Time

tON

(Note 2)

40

µs

Bias Switch On-Resistance

RS

IS = 5mA (Note 2)

20

500

Ω

Typical Operating Characteristics

(VCC = +5V, VCM = 0V, VOUT = VCC/2, RL= 100kΩ to VCC/2, SHDN = GND (MAX4467/MAX4468 only), TA = +25°C, unless otherwise

noted.)