CDB5374 Cirrus Logic Inc, CDB5374 Datasheet - Page 17

• Manufacturer Part Number: CDB5374
• Description: Audio Modules & Development Tools 2-Ch DS Modulator & Hydrophone Demo Brd
• Manufacturer: Cirrus Logic Inc

Specifications of CDB5374

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

The amplifier outputs are connected to external 680
is created by connecting 20 nF of high-linearity differential capacitance (2x 10 nF C0G) between each half
of the rough and fine signals.
2.2.3
A CS5374 ∆Σ modulator performs the A/D function for a differential analog input signal from the amplifier.
The digital output is an oversampled ∆Σ bit streams.
2.2.3.1
The modulator analog inputs are separated into rough and fine signals, each of which has an anti-alias
RC filter to limit the signal bandwidth into the modulator inputs.
2.2.3.2
The CS5374 ∆Σ modulator requires differential offset to be enabled to eliminate idle tones for a terminated
input. OFST is enabled by default in the CS5374 registers.
DS862DB1
Analog Signals
INR1, INF1
INR2, INF2
VREF
Digital Signals
MDATA[1..2]
MFLAG[1..2]
MCLK
MSYNC
PWDN[1..2]
OFST
Delta-Sigma Modulators
Rough-Fine Inputs - INR, INF
Offset Enable - OFST
Description
Channel 1 analog rough / fine inputs
Channel 2 analog rough / fine inputs
Voltage reference analog inputs
Description
Modulator delta-sigma data outputs
Modulator over-range flag outputs
Modulator clock input
Modulator synchronization input
Power down mode enable (register bits)
Internal offset enable (register bits)
Ω
series resistors and a differential anti-alias RC filter
CDB5374
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