CS3318-CQZ Cirrus Logic Inc, CS3318-CQZ Datasheet - Page 32

• Manufacturer Part Number: CS3318-CQZ
• Description: IC ANLG VOL CTRL 8CH DGTL 48LQFP
• Manufacturer: Cirrus Logic Inc
• Type: Stereo Audio Volume Controlr

Specifications of CS3318-CQZ

• Package / Case: 48-LQFP
• Applications: High End Audio
• Mounting Type: Surface Mount
• Product: General Purpose Audio Amplifiers
• Output Power: 650 mW
• Available Set Gain: 22 dB
• Thd Plus Noise: - 112 dB
• Operating Supply Voltage: +/- 8 V to +/- 9 V, 3.3 V
• Supply Current: 36 mA
• Maximum Operating Temperature: + 70 C
• Mounting Style: SMD/SMT
• Audio Load Resistance: 2 KOhms
• Input Offset Voltage: 0.75 V
• Input Signal Type: Single
• Minimum Operating Temperature: - 10 C
• Output Signal Type: Analog
• Supply Voltage (max): 9.45 V
• Supply Voltage (min): 3.1 V
• Output Type: 8-Channel Audio
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 598-1497 - BOARD EVAL FOR CS3318 VOL CTRL
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 598-1180

32
7.2
7.2.1
Quarter8
7
¼ dB Control - Address 09h
¼ dB Control (Bit 0 - 7)
Default = 0
Function:
When set, ¼ dB of gain will be added to each bit’s respective channel. The volume changes are im-
plemented as dictated by the ZCMode[1:0] and TimeOut[2:0] bits in the Device Config 2 register (see
“Device Configuration 2 - Address 0Ch” on page
It should be noted that input values outside the CS3318’s analog range of +22 dB to -96 dB are valid;
however, the volume of each channel will be limited to the CS3318’s analog range (see
its” on page
Table 6
Quarter7
6
Volume Control Register
Setting (Reg 01h - 08h)
shows example volume settings using the ¼ dB control.
20).
00010100
00010010
00010010
11010100
11010011
11010011
11010010
11010010
11010001
11010001
11010000
11010000
00010011
00010011
11111110
11111101
11111101
11111100
11111100
Quarter6
-
-
5
Quarter5
Table 6. Example Volume Settings
4
Corresponding QuarterX
Bit Setting
Quarter4
0
1
0
1
0
0
1
0
1
0
1
0
1
0
0
1
0
1
0
34).
-
-
3
Quarter3
2
Individual Volume
Quarter2
+21.75
+21.25
-95.25
-95.75
+21.5
+0.75
+0.25
-0.25
-0.75
-95.5
+0.5
+22
+21
-0.5
-95
-96
1
+1
-1
0
-
-
ChX
“Volume Lim-
CS3318
(dB)
Quarter1
DS693F1
0