Cirrus Logic CS5460A, Manual

Page: 5 / 64

CS5460A
DS284PP4 5
1. CHARACTERISTICS AND SPECIFICATIONS
ANALOG CHARACTERISTICS
(T
A
= -40° C to +85° C; VA+ = VD+ = +5 V ±10%; VREFIN = +2.5 V;
VA- = AGND = 0 V; MCLK = 4.096 MHz, K = 1; N = 4000 ==> OWR = 4000 Sps.)(See Notes 1, 2, 3, 4, and 5.)
Notes: 1. Bipolar Offset Errors and Full-Scale Gain Errors for the current and voltage channels refer to the
respective Irms Register and Vrms Register output, when the device is operating in ‘continuous
computation cycles’ data acquisition mode, after offset/gain system calibration sequences have been
executed. These specs do not apply to the error of the Instantaneous Current/Voltage Register output.
2. Specifications guaranteed by design, characterization, and/or test.
3. Analog signals are relative to VA- and digital signals to DGND unless otherwise noted.
4. In requiring VA+=VD+=5V ±10%, note that it is allowable for VA+, VD+ to differ by as much as ±200mV,
as long as VA+ > VD+.
5. Note that “Sps” is an abbreviation for units of “samples per second”.
6. Effective Input Impedance (Z
in
) is determined by clock frequency (DCLK) and Input Capacitance (IC).
Z
in
= 1/(IC*DCLK/4). Note that DCLK = MCLK / K.
Parameter Symbol Min Typ Max Unit
Accuracy (Both Channels)
Common Mode Rejection (DC, 50, 60 Hz) CMRR 80 - - dB
Offset Drift (Without the High Pass Filter) - 5 - nV/°C
Analog Inputs (Current Channel)
Maximum Differential Input Voltage Range (Gain = 10)
{(V
IIN+
) - (V
IIN-
)} (Gain = 50)
I
IN
-
- ±250
±50
-
- mV
mV
Total Harmonic Distortion THD
I
74 - - dB
Common Mode + Signal on IIN+ or IIN- (Gain = 10 or 50) -0.25 - VA+ V
Crosstalk with Voltage Channel at Full Scale (50, 60 Hz) - - -115 dB
Input Capacitance (Gain = 10)
(Gain = 50) C
in
-
- 25
25 -
- pF
pF
Effective Input Impedance (Note 6)
(Gain = 10)
(Gain = 50) Z
inI
Z
inI
-
- 30
30 -
- k
Ω
k
Ω
Noise (Referred to Input) (Gain = 10)
(Gain = 50) -
- -
- 20
4
µV
rms
µV
rms
Accuracy (Current Channel)
Bipolar Offset Error (Note 1) VOS
I
- ±0.001 - %F.S.
Full-Scale Error (Note 1) FSE
I
- ±0.001 - %F.S.
Analog Inputs (Voltage Channel)
Maximum Differential Input Voltage Range {(V
VIN+
) - (V
VIN-
)} V
IN
- ±250 - mV
Total Harmonic Distortion THD
V
62 - - dB
Common Mode + Signal on VIN+ or VIN- -0.25 - VA+ V
Crosstalk with Current Channel at Full Scale (50, 60 Hz) - - -70 dB
Input Capacitance C
inV
- 0.2 - pF
Effective Input Impedance (Note 6) Z
inV
- 5 - M
Ω
Noise (Referred to Input) - - 250 µV
rms
Accuracy (Voltage Channel)
Bipolar Offset Error (Note 1) VOS
V
- ±0.01 - %F.S.
Full-Scale Error (Note 1) FSE
V
- ±0.01 - %F.S.