Manual

CS5462
6 DS547F1
ANALOG CHARACTERISTICS (Continued)
Notes: 3. All outputs unloaded. All inputs CMOS level.
4.
Definition for PSRR: VREFIN tied to VREFOUT, VA+ = VD+ = 5 V, a 150 mV zero-to-peak sine wave (frequency
= 60 Hz) is imposed onto the +5 V supply voltage at VA+ and VD+ pins. The “+” and “-” input pins of both input
channels are shorted to VA-. Then the CS5462 is put into an internal test mode and digital output data is collected
for the channel under test. The zero-peak value of the digital sinusoidal output signal is determined, and this value
is converted into the zero-peak value of the sinusoidal voltage that would need to be applied at the channel’s inputs,
in order to cause the same digital sinusoidal output. This voltage is then defined as Veq. PSRR is then (in dB):
VREFOUT REFERENCE OUTPUT VOLTAGE
Notes: 5. The voltage at VREFOUT is measured across the temperature range. From these measurements the
following formula is used to calculate the VREFOUT Temperature Coefficient:.
Parameter Symbol Min Typ Max Unit
Dynamic Characteristics
High Pass Filter Pole Frequency -3 dB - 0.5 - Hz
Power Supplies
Power Supply Currents I
A+
I
D+
(VD+ = 5 V)
I
D+
(VD+ = 3.3 V)
PSCA
PSCD
PSCD
-
-
-
1.3
2.9
1.7
-
-
-
mA
mA
mA
Power Consumption (VD+ = 5 V)
(Note 3) (VD+ = 3.3 V)
PC -
-
21
11.6
25
-
mW
mW
Power Supply Rejection Ratio (50, 60 Hz)
(Note 4) Voltage Channel (Gain = 10)
Current Channel (Gain = 10)
(Gain = 50)
PSRR
PSRR
PSRR
48
75
56
-
-
-
-
-
-
-
-
dB
dB
dB
Parameter Symbol Min Typ Max Unit
Reference Output
Output Voltage REFOUT +2.4 +2.6 V
VREFOUT Temperature Coefficient TC
VREF 25 60 ppm/°C
Load Regulation (Output Current 1 A Source or Sink) V
R
610mV
Reference Input
Input Voltage Range VREFIN +2.4 +2.5 +2.6 V
Input Capacitance - 4 - pF
Input CVF Current - 25 - nA
PSRR 20
0.150V
V
eq
------------------



log=
(VREFOUTMAX - VREFOUTMIN)
VREFOUT
AVG
(
(
1
T
A
MAX
- T
A
MIN
(
(
1.0 x 10
(
(
6
TC
VREF
=