Cirrus Logic CS4234 - Manual (Page 15)

DS899F1 15
CS4234
ANALOG OUTPUT CHARACTERISTICS
Test Conditions (unless otherwise specified): Device configured as shown in Section 2. on page 8 . VA_SEL = 0 for
VA = 3.3 VDC, 1 for VA = 5.0 VDC.; T
A
= -40 to +105 C; Full-scale 1 kHz input sine wave; Sample Rate = 48 kHz;
Measurement Bandwidth is 20 Hz to 20 kHz; Specifications apply to all channels unless otherwise indicated; all
Power Down DACx bits = 0. See (Note 19) .
Notes:
18. One LSB of triangular PDF dither added to data.
19. Loading configuration is given in
Figure 5 below.
20. Parallel combination of all DAC DC loads. See Section 4.2.3 .
21. Valid with the recommended capacitor values on FILT+ and VQ. See Figure 4 for test configuration.
VA, VREF= 3.3 V
(Differential/Single-ended)
VA, VREF= 5.0 V
(Differential/Single-ended)
Parameter Min Typ Max Min Typ Max Unit
Dynamic Performance
Dynamic Range
18 to 24-Bit
A-weighted
unweighted
16-Bit A-weighted
unweighted
98/94
95/91
87
84
106/102
103/99
95
92
-
-
-
- 101/97
98/94
87
84
109/105
106/102
95
92
-
-
-
- dB
dB
dB
dB
Total Harmonic Distortion + Noise - -90/-88 -82/-80 - -90/-88 -82/-80 dB
Full-scale Output Voltage
1.48•VA/
0.74•VA
1.56•VA/
0.78•VA
1.64•VA/
0.82•VA
1.48•VA/
0.74•VA
1.56•VA/
0.78•VA
1.64•VA/
0.82•VA
Vpp
Interchannel Isolation (1 kHz) - 100 - - 100 - dB
Interchannel Gain Mismatch - 0.1 0.25 - 0.1 0.25 dB
Gain Drift - ±100 - - ±100 - ppm/°C
AC-Load Resistance (R
L
) (Note 19) 3 - - 3 - - k 
Load Capacitance (C
L
) (Note 19) - - 100 - - 100 pF
Parallel DC-Load Resistance (Note 20) 10 - - 10 - - k 
Output Impedance - 100 - - 100 - 
PSRR (Note 21) 1 kHz
60 Hz
-
- 60
60 -
- -
- 60
60 -
- dB
dB
AOUTx
GND
22 µF
VOUT
R L CL
Figure 5. Equivalent Output Test Load