ACS422A68TAGZBX8 IDT, ACS422A68TAGZBX8 Datasheet - Page 56

• Manufacturer Part Number: ACS422A68TAGZBX8
• Description: Interface - CODECs
• Manufacturer: IDT

Specifications of ACS422A68TAGZBX8

• Rohs: yes
• Part # Aliases: IDTACS422A68TAGZBX8

ACS422x68
LOW-POWER, HIGH-FIDELITY, INTEGRATED CODEC
©2011 INTEGRATED DEVICE TECHNOLOGY, INC.
Hold time specifies the delay between detecting a peak level being below target, and the PGA gain
beginning to ramp up. It is specified as 2
ramp-down begins immediately if the signal level is above the target.
Decay (Gain Ramp-Up) Time is the time that it takes for the PGA to ramp up across 90% of its
range. The time is 2
therefore depends on the decay time and on the gain adjustment required.
Attack (Gain Ramp-Down) Time is the time that it takes for the PGA to ramp down across 90% of its
range. Time is specified as 2
value depends on both the attack time and on the gain adjustment required.
When operating in stereo, the peak detector takes the maximum of left and right channel peak val-
ues, and both PGAs use the same gain setting, to preserve the stereo image. If the ALC function is
only enabled on one channel, only one PGA is controlled by the ALC mechanism, and the other
channel runs independently using the PGA gain set through the control registers.
If one ADC channel is unused, the peak detector will ignore that channel.
The ALC function can operate when the two ADC outputs are mixed to mono in the digital domain or
in the analog domain.
n
*24mS. The time required for the recording level to return to its target value
n
*24mS. The time required for the recording level to return to its target
56
n
*2.67mS, enabling a range between 0mS and over 40s.;
ACS422X68
V1.6 01/13