Electrical characteristics (continued) – Rainbow Electronics MAX5440 User Manual
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MAX5440
Stereo Volume Control
with Rotary Encoder Interface
ELECTRICAL CHARACTERISTICS (continued)
(V
DD
= +2.7V to +5.5V, V
SS
= GND = 0, 2.7V
≤ (V
DD
- V
SS
)
≤ 5.5V, V
LOGIC
= +2.7V to V
DD
, V
H_
= V
DD
, V
L_
= V
DD
/ 2, T
A
= T
MIN
to
T
MAX
, unless otherwise specified. Typical values are at T
A
= +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Power-Supply Rejection Ratio
PSRR
BR
1kHz, 100mV on V
DD
, 1µF on BIAS
60
dB
Maximum Load
To V
DD
or GND
3
k
Ω
Output Resistance
R
OBR
6
Ω
CONTACT INPUTS (
MUTE, MODE, RENCODEA, RENCODEB)
Internal Pullup Resistor
R
PULLUP
45
k
Ω
Single Pulse Input Low Time
t
CPW
22
ms
Repetitive Input Pulse Separation
t
IPWS
50
ms
Timeout Period
t
WS
Click/pop suppression inactive
32
ms
DIGITAL INPUTS (
MUTE, MODE, RENCODEA, RENCODEB, SHDN)
3.6V < V
LOGIC
≤ 5.5V
2.4
Input High Voltage (Note 2)
V
IH
2.7V
≤ V
LOGIC
≤ 3.6V
2.0
V
3.6V < V
LOGIC
≤ 5.5V
0.8
Input Low Voltage (Note 2)
V
IL
2.7V
≤ V
LOGIC
≤ 3.6V
0.6
V
Input Leakage Current
Inputs unconnected
-1
+1
µA
Input Capacitance
5
pF
POWER SUPPLIES
Supply Voltage
V
DD
V
SS
= 0
2.7
5.5
V
Negative Power Supply
V
SS
V
DD
= +2.7V
-2.7
0
V
Supply Voltage Difference
V
DD
- V
SS
5.5
V
Active Supply Current
I
DD
1.4
mA
V
DD
= +5V, V
SS
= 0
1.3
S tand b y S up p l y C ur r ent ( N otes 3, 4)
I
STBY
V
DD
= +2.7V, V
SS
= -2.7V
1.3
µA
Shutdown Supply Current
I
SHDN
(Note 3)
1
µA
Power-Up Time
t
PU
Click/pop suppression inactive
50
ms
Logic Supply Voltage
V
LOGIC
V
SS
= 0
2.7
V
DD
V
Logic Active Supply Current
I
L
V
RENCODEA =
V
RENCODEB
= 0V
320
µA
Logic Standby Supply Current
I
LSTBY
(Note 4)
1
µA
Logic Shutdown Current
I
LSHDN
1
µA
LED INDICATORS (LEDIND0–LEDIND4,
MODEIND)
V
LOGIC
= 2.7V, I
SINK
= 10mA
0.4
Output Low Voltage
V
OL
V
LOGIC
= 5.5V, I
SINK
= 10mA
0.2
V
Output Leakage Current
0.1
10
µA
Output Capacitance
3
pF
Maximum Sink Current
150
mA
Note 1: Parameters are 100% production tested at +85°C and limits through temperature are guaranteed by design.
Note 2: The device draws current in excess of the specified supply current when the digital inputs are driven with voltages between
(V
DD
- 0.5V) and (GND + 0.5V). See Digital Supply Current vs. Digital Input Voltage in the Typical Operating Characteristics.
Note 3: Shutdown refers to the SHDN input being asserted low. Standby refers to SHDN not being asserted and all I/O inactive.
Note 4: Supply current measured with the wiper position fixed.
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