CS5566_09 Datasheet, PDF (4/30 Pages) Cirrus Logic – ±2.5 V / 5 V, 5 kSps, 24-bit ΔΣ ADC

5/4/09
CS5566
1. CHARACTERISTICS AND SPECIFICATIONS
• Min / Max characteristics and specifications are guaranteed over the specified operating conditions.
• Typical characteristics and specifications are measured at nominal supply voltages and T_A = 25°C.
• VLR = 0 V. All voltages with respect to 0 V.
ANALOG CHARACTERISTICS T_A = -40 to +85 °C; V1+ = V2+ = +2.5 V, ±5%; V1- = V2- = -2.5 V,
±5%; VL -VLR = 3.3 V, ±5%; VREF = (VREF+) - (VREF-) = 4.096V; MCLK = 8 MHz; SMODE = VL. BUFEN = V1+
unless otherwise stated. Connected per Figure 8. Bipolar mode unless otherwise stated.
Parameter
Min Typ Max
Accuracy
Linearity Error
- 0.0005
-
Differential Linearity Error
(Note 1) -
±0.1
-
Positive Full-scale Error
-
1.0
-
Negative Full-scale Error
-
1.0
-
Full-scale Drift
(Note 2) -
1
-
Bipolar Offset
(Note 2) -
±500
-
Bipolar Offset Drift
(Note 2) -
1
-
Noise
-
9.5
-
Dynamic Performance
Peak Harmonic or Spurious Noise
200 Hz, -0.5 dB Input -
-115
-
Total Harmonic Distortion
200 Hz, -0.5 dB Input -
-110 -100
Signal-to-Noise
108 110
-
S/(N + D) Ratio
-0.5 dB Input, 200 Hz -
109
-
-60 dB Input, 200 Hz -
50
-
-3 dB Input Bandwidth
(Note 3) -
21
-
Analog Input
Analog Input Range (Differential)
Unipolar
Bipolar
0 to +VREF
±VREF
Input Capacitance
-
10
-
CVF Current
(Note 4)
AIN Buffer On (BUFEN = V+) -
600
-
AIN Buffer Off (BUFEN = V-) -
130
-
Common Mode Rejection Ratio (DC to 2 kHz)
-100 -110
-
Unit
±%FS
LSB₂₄
%FS
%FS
PPM / °C
LSB₂₄
LSB / °C
μVrms
dB
dB
dB
dB
dB
kHz
V
V
pF
nA
μA
dB
1. No missing codes is guaranteed at 24 bits resolution over the specified temperature range.
2. One LSB is equivalent to (2 x VREF) ÷ 2²⁴ or (2 x 4.096) ÷ 16,777,216 = 488 nV.
3. Scales with MCLK.
4. Measured using an input signal of 1 V DC.
4
DS806PP2