Cirrus Logic CS5451A - Manual (Page 5)

CS5451A
DS635F4 5
ANALOG CHARACTERISTICS (continued)
Notes: 1. Specifications for Gain = 20 apply only to Current Channels. Voltage Channels are fixed to Gain = 1
2. All outputs unloaded. All inputs CMOS level.
3. Definition for PSRR: VREFIN tied to VREFOUT, VA+ = VD+ = 3 V, AGND = DGND = 0 V, VA- = -2 V (using charge-
pump circuit with CPD). In addition, a 106.07 mV rms (60 Hz) sinewave is imposed onto the VA+ and VD+ pins.
The “+” and “-” input pins of both input channels are shorted to VA-. 2048 instantaneous digital output data words
are collected for the channel under test. The rms value of the digital sinusoidal output signal is calculated, and this
rms value is converted into the rms value of the sinusoidal voltage (measured in mV) 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):
DIGITAL CHARACTERISTICS (See Note 4)
• Min/Max characteristics and specifications are guaranteed over all Operating Conditions.
• Typical characteristics and specifications are measured at nominal supply voltages and TA = 25 °C.
• VA+ = VD+ = 3V ±10%; VA- = -2 V ±10%; AGND = DGND = 0 V. All voltages with respect to 0 V.
• XIN = 4.096 MHz
Notes: 4. All measurements performed under static conditions.
5. For OWRS and GAIN pins, input leakage current is 30 µA (Max).
Parameter Symbol Min Typ Max Unit
Power Supplies
Power Supply Currents I
A+
Typical VA+ = VD+ = +3 V; VA- = -2 V I
D+
with CPD
I
D+
without CPD
PSCA
PSCD
PSCD -
-
- 4.0
5.0
1.0 5.3
6.3
1.5 mA
mA
mA
Power Consumption With CPD
(Note 2) Without CPD
PC
PC -
- 27
23 35
31 mW
mW
Power Supply Rejection (DC)
50, 60 Hz (Note 3) Voltage Channel
50, 60 Hz (Note 3) Current Channel
PSRR
PSRR
PSRR 50
50
60 -
65
90
-
-
- dB
dB
dB
Parameter Symbol Min Typ Max Unit
Master Clock Characteristics
Master Clock Frequency XIN 3 4.096 5 MHz
Master Clock Duty Cycle 40 - 60 %
Filter Characteristics
High Rate Filter Output Word Rate OWRS = 0
OWRS = 1 OWR
OWR -
- XIN/2048
XIN/1024 -
- Hz
Hz
Input/Output Characteristics
High-Level Input Voltage V
IH
0.6 VD+ - VD+ V
Low-Level Input Voltage V
IL
0.0 - 0.8 V
High-Level Output Voltage I
out
= -5.0 mA V
OH
(VD+) - 1.0 - - V
Low-Level Output Voltage I
out
= 5.0 mA V
OL
- - 0.4 V
Input Leakage Current (Note 5) I
in
- ±1 ±10 µA
3-State Leakage Current I
OZ
- - ±10 µA
Digital Output Pin Capacitance C
out
- 9 - pF
PSRR 20
106.07
V
eq
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