Rainbow Electronics MAX9877 - Manual (Page 6)

MAX9877
Low RF Susceptibility, Mono Audio
Subsystem with DirectDrive Headphone Amplifier
6 _______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS (continued)
(V DD = PV DD = 3.7V, V GND = V PGND = 0V. Single-ended inputs, preamp gain = 0dB, volume controls = 0dB, OSC = 00, BYPASS = 0,
SHDN = 1. Speaker loads (Z
SPK ) connected between OUT+ and OUT-. Headphone loads (R HP ) connected from HPL or HPR to GND.
SDA and SCL pullup voltage = 3.3V. Z SPK =
∞, R
HP =
∞. C1 = C2 = C
BIAS = 1µF. T A = T MIN to T MAX , unless otherwise noted. Typical
values are at T A = +25°C.) (Note 3)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
2-WIRE INTERFACE TIMING
External Pullup Voltage Range:
SDA and SCL
1.7 3.6 V
Serial Clock Frequency f SCL DC 400 kHz
Bus Free Time Between STOP
and START Conditions
t BUF 1.3 µs
START Condition Hold t HD:STA 0.6 µs
START Condition Setup Time t SU:STA 0.6 µs
Clock Low Period t LOW 1.3 µs
Clock High Period t
HIGH
0.6 µs
Data Setup Time t SU:DAT 100 ns
Data Hold Time t HD:DAT 0 900 ns
Maximum Receive SCL/SDA Rise
Time
t R 300 ns
Maximum Receive SCL/SDA Fall
Time
t F 300 ns
Setup Time for STOP Condition t SU:STO 0.6 µs
Capacitive Load for Each Bus
Line
C b 400 pF
Note 3: All devices are 100% production tested at room temperature. All temperature limits are guaranteed by design.
Note 4: Amplifier inputs are AC-coupled to GND.
Note 5: Output levels higher than 825mW are not recommended for extended durations. Production tested with Z
SPK = 8
Ω + 68µH only.