Datasheet MAX9812, MAX9813 (Maxim) - 3

MAX9812/MAX9813 Tiny, Low-Cost, Single/Dual-Input, Fixed-Gain Microphone Amplifiers with Integrated Bias ELECTRICAL CHARACTERISTICS (continued)
(VCC = 3.3V, IBIAS = 500µA (MAX9812L/MAX9813L), VCC = 5V, IBIAS = 800µA (MAX9812H/MAX9813H), VGND = 0V, RL = open, SHDN = VCC, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Amplifier Input Voltage-Noise en Inputs at AC GND f = 1kHz 40 nV/√Hz Density Total Integrated Input Noise Vn 22Hz to 22kHz BW, inputs at AC GND 5 µVRMS Input referred, MAX9813 1kHz 75 Off-Isolation dB only 10kHz 60 VOUT = 1VP-P 0.04 f = 1kHz, RL = 10kΩ to (L version) Total Harmonic Distortion Plus THD+N VCC/2, BW = 22Hz to % Noise 22kHz VOUT = 4VP-P 0.015 (H version)
BIAS
MAX9812L/MAX9813L 2.1 2.30 2.55 Bias Output Voltage Range VBIAS V MAX9812H/MAX9813H 3.6 4.0 4.4 Bias Output Resistance RBIAS 0.1 Ω DC, TA = +25°C 70 80 Power-Supply Rejection Ratio f = 217Hz 80 PSRRBIAS dB (VCC to BIAS) f = 1kHz 75 f = 10kHz 55 BIAS Current Limit IBIAS_SC BIAS short to GND 5 22 50 mA BIAS Capacitive-Load Stability CBIAS No sustained oscillations 50 pF Total Integrated BIAS Noise Vn 22Hz to 22kHz BW 29 µVRMS
DIGITAL INPUTS (
SHDN
, IN1/
IN2
)
Logic-Low Threshold VIL 0.8 V Logic-High Threshold VIH 2.0 V Logic Input Current IIN SHDN = GND or VCC ±1 µA Shutdown Enable Time tSHDN_ON 95% of settled value 10 ms Shutdown Disable Time tSHDN_OFF 50 µs IN1/IN2 Select Time tSEL 10 µs
Note 1:
All specifications are 100% tested at TA = +25°C. Temperature limits are guaranteed by design. Maxim Integrated 3