Datasheet

MAX4298/MAX4299
Ultra-High PSRR Stereo Drivers +
Microphone Amp + 100mA Linear Regulator
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= SV
CC
= +5V, R
L
= ∞ on all outputs, C
BYPASS
= 1µF, C
BIAS
= 1µF, C
REG
= 10µF (MAX4299), T
A
= T
MIN
to T
MAX
, unless other-
wise noted. Load resistors (R
L
) are terminated to 2.25V. Typical values are at T
A
= +25°C. Specifications apply to both MAX4298 and
MAX4299, unless otherwise noted.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
BIAS VOLTAGE OUTPUT
DC BIAS Voltage V
BIAS
I
L
= 0
2.13 2.25 2.37
V
Line Regulation 120 dB
Load Regulation I
L
= 0 to 1µA50
mV
DIGITAL INPUTS (MUTE for MAX4298/MAX4299, and REG
ON
for MAX4299)
Input Voltage High V
INH
2.4 V
Input Voltage Low V
INL
0.8 V
Input Leakage Current I
IN
V
IN = 0 or
V
CC
±1 µA
MICROPHONE AMPLIFIER (MAX4299 only)
Input Offset Voltage V
OS
±2
±10
mV
Input Bias Current
I
BIAS
0.2 nA
DC, V
CC
= 4.5V to 5.5V 115
f = 20kHz 93
Power-Supply Rejection Ratio PSRR
f = 100kHz 80
dB
Voltage Gain A
VOL
R
L
= 10kΩ, 0.13V ≤ V
MICOUT
≤ V
CC
- 0.13V 80 100 dB
Output Drive V
OUT
R
L
= 10kΩ 1.4
1.58
V
RMS
A
V
= -1V/V
0.005
THD + Noise (Note 4)
THD+N
f = 1kHz, R
L
= 10kΩ,
V
MICOUT
= 1.5V
RMS A
V
= -10V/V
0.03
%
Full-Scale Signal-to-Noise Ratio
(Note 4)
SNR
R
L
= 10kΩ, V
M IC OU T
= 1.06V
R M S
, A
V
= - 10V /V
80 dB
All-Hostile Crosstalk f = 10kHz (Note 5) 80 dB
Unity Gain Bandwidth GBW 1
MHz
REGULATOR (MAX4299 only)
Regulator Output Voltage V
REG
V
CC
= 4.5V to 5.5V. I
L
= 0 to 100mA, using
internal feedback
3.15
3.3
3.45
V
Line Regulation V
CC
= 4.5V to 5.5V, I
L
= 50mA 0.2
mV
I
L
= 10mA to 100mA 30
mV
Load Regulation
I
L
= 0 to 100mA 50
mV
FB Voltage V
FB
Reference for regulator adjustment
1.233
V
Note 1: All devices are 100% production tested at T
A
= +25°C. All temperature limits are guaranteed by design.
Note 2: Current drawn from SV
CC
when V
CC
< 4V.
Note 3: Guaranteed by design.
Note 4: Measurement bandwidth is 20Hz to 22kHz.
Note 5: Voltage at MICOUT with OUT1 = OUT2 = 1V
RMS
into 32Ω.