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NCP2993
PIN DESCRIPTION
Pin
A1
Name
INM
Type
I
Description
Negative input of the first amplifier, receives the audio input signal. Connected to the feedback
resistor R f and to the input resistor R in .
A2
A3
B1
B2
OUTA
INP
VM
TON
O
I
I
I
Negative output of the NCP2993. Connected to the load and to the feedback resistor Rf.
Positive input of the first amplifier, receives the common mode voltage.
Analog Ground.
TON pin selects 2 different Turn On times:
TON = GND ? > 30 ms
TON = VP ? > 15 ms
B3
C1
C2
C3
VP
BYPASS
OUTB
SHUTDOWN
I
I
O
I
Positive analog supply of the cell. Range: 2.5 V ? 5.5 V.
Bypass capacitor pin which provides the common mode voltage (Vp/2).
Positive output of the NCP2993. Connected to the load.
The device enters in shutdown mode when a low level is applied on this pin.
MAXIMUM RATINGS (Note 1)
Rating
Supply Voltage
Operating Supply Voltage
Input Voltage
Power Dissipation (Note 2)
Operating Ambient Temperature
Max Junction Temperature
Storage Temperature Range
Thermal Resistance Junction ? to ? Air
Symbol
V p
Op Vp
V in
Pd
T A
T J
T stg
R q JA
Value
6.0
2.5 to 5.5 V
? 0.3 to V CC +0.3
Internally Limited
? 40 to +85
150
? 65 to +150
(Note 3)
Unit
V
?
V
?
° C
° C
° C
° C/W
ESD Protection
Human Body Model (HBM) (Note 4)
?
2000
V
Machine Model (MM) (Note 5)
200
Latchup Current @ T A = 85 ° C (Note 6)
?
± 100
mA
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
1. Maximum electrical ratings are defined as those values beyond which damage to the device may occur at T A = +25 ° C.
2. The thermal shutdown set to 160 ° C (typical) avoids irreversible damage on the device due to power dissipation.
3. The R q JA is highly dependent of the PCB Heatsink area. For example, R q JA can equal 195 ° C/W with 50 mm 2 total area and also 135 ° C/W with
500 mm 2 . The bumps have the same thermal resistance and all need to be connected to optimize the power dissipation.
4. Human Body Model, 100 pF discharge through a 1.5 k W resistor following specification JESD22/A114.
5. Machine Model, 200 pF discharged through all pins following specification JESD22/A115.
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