Datasheet

DS4420
I
2
C Programmable-Gain Amplifier
for Audio Applications
_____________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= +4.5V to +5.5V, T
A
= -20°C to +70°C, unless otherwise noted.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
V
OUT
= V
CC
89
Amplifier Output Current
(Sinking)
I
OS2
V
OUT
= 0.75V 64
mA
Resistive Load Range R
L
Differential 50 50k Ω
Capacitive Load C
L
Cap to GND (Note 4) 100 pF
Closed-Loop Bandwidth All gain settings (Note 5) 20 20k Hz
Passband Flatness 20Hz to 20kHz (Notes 2, 5) -1 +1 dB
A = -35dB, 300Hz to 3.4kHz -123
Output Noise (Note 5) N
O
A = +25dB, 300Hz to 3.4kHz -88
dBV
R
L
= 50Ω, V
O
≤ +6dBV,
f = 1kHz, A = ±16dB
0.03 1.0
Total Harmonic Distortion (Note 5) THD
R
L
= 1kΩ, V
O
≤ +6dBV,
f = 1kHz, A = ±16dB
0.01
%
Gain Range A -35 +25 dB
Gain Step Size A
S
2.0 3.0 4.0 dB
Gain Accuracy A
ERR1
(Note 10) -2.5 +2.5 dB
Mute and Standby Mode Gain A
MUTE
(Note 5) -90 dB
S tand b y M od e E xi t Ti m et
PU
(Note 6) 10 µs
I
2
C AC ELECTRICAL CHARACTERISTICS (See Figure 3)
(V
CC
= +4.5V to +5.5V, T
A
= -20°C to +70°C, timing referenced to V
IL(MAX)
and V
IH(MIN)
, unless otherwise noted.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
SCL Clock Frequency f
SCL
(Note 7) 0 400 kHz
Bus Free Time Between STOP and
START Conditions
t
BUF
1.3 µs
Hold Time (Repeated) START
Condition
t
HD:STA
0.6 µs
Low Period of SCL t
LOW
1.3 µs
High Period of SCL t
HIGH
0.6 µs
Data Hold Time t
HD:DAT
0 0.9 µs
Data Setup Time t
SU:DAT
100 ns
Start Setup Time t
SU:STA
0.6 µs
SDA and SCL Rise Time t
R
(Note 8)
20 +
0.1C
B
300 ns
SDA and SCL Fall Time t
F
(Note 8)
20 +
0.1C
B
300 ns
STOP Setup Time t
SU:STO
0.6 µs
SDA and SCL Capacitive Loading C
B
(Note 8) 400 pF