Cirrus Logic CS5372A - Manual (Page 5)

CS5371A CS5372A
DS748F3 5
TEMPERATURE CONDITIONS
ANALOG INPUT CHARACTERISTICS
Notes: 7. Maximum integrated noise over the measurement bandwidth for the voltage reference device attached
to the VREF± inputs.
8. Anti-alias capacitors are discrete external components and must be of good quality (C0G, NPO, poly).
Poor quality capacitors will degrade total harmonic distortion (THD) performance. See Figure 1 on
page 5
Parameter Symbol Min Typ Max Unit
Ambient Operating Temperature T
A
-40 - 85 ºC
Storage Temperature Range T
STR
-65 - 150 ºC
Allowable Junction Temperature T
JCT
- - 125 ºC
Junction to Ambient Thermal Impedance (4-layer PCB)
θ
JA
- 65 - ºC / W
Parameter Symbol Min Typ Max Unit
VREF Input
[VREF+] - [VREF-] ( Note 2, 3 ) VREF - 2.500 - V
VREF- ( Note 4 ) VREF- - VA - - V
VREF Input Current VREF
IMOD
- 120 - µA
VREF Input Noise ( Note 7 ) VREF
IN
- - 1 µV
rms
Modulator INR± , INF± Inputs
External Anti-alias Filter Series Resistance
( Note 8 ) Differential Capacitance
R
AA
C
DIFF
-
- 680
20
-
-
Ω
nF
Differential Input Impedance INR±
INF±
ZDIF
INR
ZDIF
INF
-
- 20
1
-
- k Ω
M Ω
Single-ended Input Impedance INR±
INF±
ZSE
INR
ZSE
INF
-
- 40
2
-
- k
Ω
M Ω
CS5371A / CS5372A
MODULATOR
INR+
INF+
INF-
INR-
20nF
C0G
20nF
C0G
680
CS3301A / CS3302A
AMPLIFIER
OUTR+
OUTF+
OUTF-
OUTR-
680
680
680
Figure 1. Anti-alias Filter Components