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Volume Controller IC
PT2310
DESCRIPTION
The PT2310 is an electronic volume controller IC designed for audio equipment. Utilize CMOS Technology; it has 2 individual channels attenuator built inside and ideal for both mono and stereo applications. The PT2310 provides wide frequency response range, very low total harmonic distortion and low noise. It also has a built-in loudness compensation function for the sound effect improvement.
FEATURES
* * * * * * * * * CMOS Technology Low Power Consumption Two channel independent volume attenuator Simplified External Components Wide Supply Voltage 4.5V12V, controlled by MCU interface Attenuation Range 0dB-78dB (2dB/Step) Built-in Loudness Compensation Function Wide Frequency Response, Low Total Harmonic Distortion and Low Noise Available in 16 Pins DIP and 16 Pins SOP
APPLICATIONS
* Audio Equipments * TV * Multi-media Sound Device
PT2310 V1.0
-1-
June, 2005
Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw
Volume Controller IC
PT2310
BLOCK DIAGRAM
VS S OUT-L IN-L LD1-L L-ch Latch LD2-L AGND -L CS CK Data Decoder, ST B Generator Shift Register (13bit) R-ch Latch LD2-R AGND -R ST B DATA VD D OUT-R IN-R LD1-R
PIN CONFIGURATION
VSS O U T-L IN-L L D 1 -L L D 2 -L A G N D -L CS CK 1 2 3 4 5 6 7 8 P T 2 31 0 16 15 14 13 12 11 10 9 VD D O U T-R IN-R L D 1 -R L D 2 -R A G N D -R ST B D ATA
PT2310 V1.0
-2-
June, 2005
Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw
Volume Controller IC
PT2310
PIN DESCRIPTION
Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Pin Name VSS OUT-L IN-L LD1-L LD2-L AGND-L CS CK DATA STB AGND-R LD2-R LD1-R IN-R OUT-R VDD I/O O I O O I I I O O I O Description Supply voltage input (-) Left channel output Left channel input Left channel volume loudness tap (1) Left channel volume loudness tap (2) Analog ground Chip select pin Clock input Data code input Strobe Analog ground Right channel volume loudness tap (2) Right channel volume loudness tap (1) Right channel input Right channel output Supply voltage input (+) Function Volume control circuit:
O UT-L IN-L L D1-L
L S1
L D2-L AG ND-L
L S2
(Loudness On: LS1=On, LS2=Off) C2C3C4 Fixed codes are 0, 1, 1 When CS=1, C1=1 When CS=0, C1=0 (see P.5 description) Attenuation value is defined by the data code; the data code is consisting of 13bits. After the DATA & CK codes were sent, a high strobe pulse in STB pin to confirm the data is validity. Volume control circuit:
O UT-R IN-R L D1-R
L S1
L D2-R AG ND-R
L S2
(Loudness On: LS1=On, LS2=Off) -
PT2310 V1.0
-3-
June, 2005
Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw
Volume Controller IC
PT2310
FUNCTION DESCRIPTION
ATTENUATION
The PT2310 volume attenuator is consists of resistor ladder and analog switch. The Tap for loudness function is connected to the Step 10 (-20 dB). The relations of step and attenuation is given in table below Step 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 dB 0 -2 -4 -6 -8 -10 -12 -14 -16 -18 -20 -22 -24 -26 -28 -30 -32 -34 -36 -38 -40 Step 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 dB -42 -44 -46 -48 -50 -52 -54 -56 -58 -60 -62 -64 -66 -68 -70 -72 -74 -76 -78 -
OUT IN
Ladder resistors Diagram
S0 S1
28.5K
LS1 LD1
S9 S10 S11
LD2
3.7K
S12
21.97K LS2 S39 AGND S40
Note: 1. Loudness On: LS1=On, LS2=Off 2. Loudness Off: LS1=Off, LS2=On
PT2310 V1.0
-4-
June, 2005
Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw
Volume Controller IC
PT2310
SERIAL BUS INTERFACE
The DATA, CK and STB pins consist of bus line; the bus line is for communication with the MCU and the PT2310.
SERIAL DATA CODE
The data code is consists by L, R, D1~D4, LD, C1~C4 (totally 13 bits), at the end of the code there needs a high strobe pulse to confirm the data code is validity.
CK
D ATA
L
R D1 D2 D3 D4 D5 D6 LD C1 C2 C3 C4
STB
CHIP SELECTION (C1~C4)
The Chip Selection code C1 is depending on the states of the CS pin, the CS pin in low state means the C1 bit=0; and the CS pin in high state means the C1 bit=1. Ignore what states of the CS pin the C2, C3 and C4 bit is presets to the state 0, 1, 1. CS "1" "0" C1 1 0 C2 0 0 C3 1 1 C4 1 1
LEFT AND RIGHT CHANNEL CONTROL CODE
In the DATA code, the "L" bit is for left channel and the "R" is for right channel is selected. If the "L" bit is 1 means the attenuation value (D1 to D6) is for left channel exclusively; and if "L" and "R" all are "1" means attenuation value is for the both channel.
LOUDNESS SETUP CODE
The "LD" bit In the DATA code is for the Loudness function. When the "LD" bit is 0, the Loudness function is turned off (LS1=Off, LS2=ON) and the "LD" bit is 1 means the Loudness is turned ON (LS1=On, LS2=Off).
PT2310 V1.0
-5-
June, 2005
Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw
Volume Controller IC
PT2310
VOLUME SETUP CODE (D1~D6)
In the DATA code, "D1~D6" is defined to the volume attenuation value. Please refer the table is shown on below for the relation of volume setup code of each step. Volume Volume Value D1 D2 D3 D4 D5 D6 Value D1 D2 D3 D4 D5 D6 (dB) (dB) 0 0 0 0 0 0 0 40 0 0 1 0 1 0 2 1 0 0 0 0 0 42 1 0 1 0 1 0 4 0 1 0 0 0 0 44 0 1 1 0 1 0 6 1 1 0 0 0 0 46 1 1 1 0 1 0 8 0 0 1 0 0 0 48 0 0 0 1 1 0 10 1 0 1 0 0 0 50 1 0 0 1 1 0 12 0 1 1 0 0 0 52 0 1 0 1 1 0 14 1 1 1 0 0 0 54 1 1 0 1 1 0 16 0 0 0 1 0 0 56 0 0 1 1 1 0 18 1 0 0 1 0 0 58 1 0 1 1 1 0 20 0 1 0 1 0 0 60 0 1 1 1 1 0 22 1 1 0 1 0 0 62 1 1 1 1 1 0 24 0 0 1 1 0 0 64 0 0 0 0 0 1 26 1 0 1 1 0 0 66 1 0 0 0 0 1 28 0 1 1 1 0 0 68 0 1 0 0 0 1 30 1 1 1 1 0 0 70 1 1 0 0 0 1 32 0 0 0 0 1 0 72 0 0 1 0 0 1 34 1 0 0 0 1 0 74 1 0 1 0 0 1 36 0 1 0 0 1 0 76 0 1 1 0 0 1 38 1 1 0 0 1 0 78 1 1 1 0 0 1 0 0 0 1 0 1
SERIAL BUS TIMING
DATA CK
ST B a a b b ca
Note: a>1s, b>2s, c>2s
PT2310 V1.0
-6-
June, 2005
Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw
Volume Controller IC
PT2310
LOUDNESS FREQUENCY RESPONSE
+10 +5 +0 -5 -10 -15 -20 -25 d B r A -30 -35 -40 -45 -50 -55 -60 -65 -70 -75 -80 20 50 100 200 500 Hz 1k 2k 5k 10k 20k +10 +5 +0 -5 -10 -15 -20 -25 -30 -35 -40 -45 -50 -55 -60 -65 -70 -75 -80 d B r B
-0dB -10dB -20dB -30dB -40dB -50dB -60dB -70dB -78dB
PT2310 V1.0
-7-
June, 2005
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Volume Controller IC
PT2310
TOTAL HARMONIC DISTORTION VS. INPUT LEVEL
10 5 2 1 0.5 0.2 0.1 0.05 % 0.02 0.01 0.005 0.002 0.001 0.0005 0.0002 0.0001 1m 2m 5m 10m 20m 50m 100m 200m V 500m 1 2 5 10
PT2310 V1.0
-8-
June, 2005
Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw
Volume Controller IC
PT2310
ABSOLUTE MAXIMUM RATINGS
(Ta=25) Parameter Maximum supply voltage Input voltage Power dissipation Operating temperature Storage temperature Symbol VDD VIN PD Topr Tstg Rating -0.3 ~ 15 -0.3 ~ VDD+0.3 300 -40 ~ +85 -65 ~ +150 Unit V V mW
ELECTRONICAL CHARACTERISTICS
(Unless otherwise specified, Ta=25, VDD=9V)
Parameter Supply voltage Operating current Quiescent current Input high level voltage Input low level voltage Input high level current Input low level current Resistance of Attenuator Resistance of analog switch Two Channel Attenuation error Channel Balance Total harmonic distortion Max. attenuation Crosstalk Residual noise Maximum Bus. Operation Frequency Minimum pulse duty Symbol VDD IDD Iq VIH VIL IIH IIL RVR RON ATT RVR THD ATTmax CT VN Fop TCK TSTB Vin=1Vrms 1.Input Frequency: 1KHz 2. Input voltage: 1Vrms 3. Test equipment input resistance=100K 4. Test equipment output resistance=600 CK input STB input 0dB dB 0dB 0dB Test Condition No load, F=20Hz IN, OUT, CK, CS, SATA, STB connect to VSS CK, DATA, STB, VDD=5V CS, VDD=10V CK, DATA, STB, VDD=5V CS, VDD=10V VIL=VDD VIL=0V When 0dB, the resistance between IN1~OUT1 and IN2~OUT2 Min. 4.5 4 0.7VDD 0 0 -1 -1 20 10 Typ. 9.0 0.3 0.1 28 250 0 0 0.01 100 100 2 0.5 1 Max. 12 1.0 10 VDD VDD 1 0.3VDD 1 1 37 600 2 3 500K 1 2 Unit V mA A V V V V A A K dB % % dB dB Vrms Hz s
PT2310 V1.0
-9-
June, 2005
Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw
Volume Controller IC
PT2310
APPLICATION CIRCUIT 1
1/2VDD VDD
+ 220 F/25V 4.5V 1 + OUTPUT L-Ch INPUT 10 F/25V + 10 F/25V 2 3 1500pF 4 5 6 7 8
3.3K
0.1 F 16 15 14 13 12 11 10 9 1500pF + +
+
+ 47 F/25V 9V
VSS OUT-L IN-L LD1-L LD2-L AGND-L CS CK PT2310
VDD OUT-R IN-R LD1-R LD2-R AGND-R STB DATA
10 F/25V 10 F/25V
OUTPUT INPUT R-Ch
8.2K
8.2K
220K ~470K 1/2VDD VDD 0.1 F
220K ~470K 1/2VDD 0.1 F
To MCU
Note: With Loudness function
PT2310 V1.0
- 10 -
June, 2005
Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw
Volume Controller IC
PT2310
APPLICATION CIRCUIT 2
1/ 2V DD
V DD
2 20 F/ 2 5V
+ 4. 5V 1
3. 3K
0 .1 F
+4 7 F /2 5 V -
+ -
9V
1 0 F /2 5 V
V SS O UT-L IN -L LD1 -L LD2 -L A GND-L CS CK P T2 310
V DD O UT-R IN -R LD1 -R LD2 -R A GND-R S TB DATA
16 15 14 13 12 11 10 9 To M CU 1/ 2V DD + +
1 0 F /2 5 V
O UTP UT L-Ch INP UT
-
+ +
2 3 4 5
-
1 0 F /2 5 V
O UTPUT IN PUT R-Ch
1 - 0 F /2 5 V
V DD 1/ 2V DD
6 7 8
Note: Without Loudness function
PT2310 V1.0
- 11 -
June, 2005
Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw
Volume Controller IC
PT2310
ORDER INFORMATION
Order Part Number PT2310 PT2310-S PT2310 (L) PT2310-S (L) Package Type 16 Pins, DIP, 300mil 16 Pins, SOP, 300mil 16 Pins, DIP, 300mil 16 Pins, SOP, 300mil Top Code PT2310 PT2310-S PT2310 PT2310-S
Note: 1. (L), (C) or (S) = Lead Free 2. The Lead Free mark is put in front of the data code.
PT2310 V1.0
- 12 -
June, 2005
Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw
Volume Controller IC
PT2310
PACKAGE INFORMATION
16 PINS, DIP, 300MIL
PT2310 V1.0
- 13 -
June, 2005
Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw
Volume Controller IC
Symbol A A1 A2 b b1 b2 b3 c c1 D D1 E E1 e eA eB eC L Min. 0.015 0.115 0.014 0.014 0.045 0.030 0.008 0.008 0.780 0.005 0.300 0.240 Nom. 0.130 0.018 0.018 0.060 0.039 0.010 0.010 0.790 0.310 0.250 0.100 bsc. 0.300 bsc. 0.130 Max. 0.210 0.195 0.022 0.020 0.070 0.045 0.014 0.011 0.800 0.325 0.280 0.430 0.060 0.150
PT2310
0.000 0.115
Notes 1. All dimensions are in INCHS. 2. Dimensioning and tolerancing per ANSI Y14.5M-1982. 3. Dimensions "A", "A1" and "L" are measured with the package seated in JEDEC Seating Plane Gauge GS-3. 4. "D", "D1" and "E1" dimensions do not include mold flash or protrusions. Mold flash or protrusions shall not exceed 0.010 inch. 5. "E" and "eA" measured with the leads constrained to be perpendicular to datum -c-. 6. "eB" and "eC" are measured at the lead tips with the loads unconstrained. 7. "N" is the number of terminal positions. (N=16) 8. Pointed or rounded lead tips are preferred to ease insertion. 9. "b2" and "b3" maximum dimensions are not include dambar protrusions. Dambar protrusions shall not exceed 0.010 inch (0.25 mm). 10. Distance between leads including Dambar protrusions to be 0.005 inch minimum. 11. Datum plane -H- coincident with the bottom of lead, where lead exits body. 12. Refer to JEDEC MS-001 Variation AB. JEDEC is the trademark of JEDEC SOLID STATE TECHNOLOGY ASSOCIATION.
PT2310 V1.0
- 14 -
June, 2005
Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw
Volume Controller IC
PT2310
16 PINS, SOP, 300MIL
Symbol A A1 B C D E e H h L
Min. 2.35 0.10 0.33 0.23 10.10 7.40 10.00 0.25 0.40 0
Nom.
Max. 2.65 0.30 0.51 0.32 10.50 7.60 10.65 0.75 1.27 8
1.27 bsc.
PT2310 V1.0
- 15 -
June, 2005
Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw
Volume Controller IC
PT2310
Notes: 1. Dimensioning and tolerancing per ANSI Y14.5-1982. 2. Dimension "D" does not include mold flash, protrusions or gate burrs. Mold Flash protrusion or gate burrs shall not exceed 0.15mm (0.006 in) per side. 3. Dimension "E" does not include interlead flash or protrusions. Interlead flash or protrusions shall not exceed 0.25 mm (0.010 in) per side. 4. The chamfer on the body is optional. It is not present, a visual index feature must be located within the crosshatched area. 5. "L" is the length of the terminal for soldering to a substrate. 6. "N" is the number of terminal positions. (N=16) 7. The lead width "B" as measured 0.36 mm (0.014 in) or greater above the seating plane, shall not exceed a maximum value of 0.61 mm (0.24 in). 8. Controlling dimension: MILLIMETER. 9. Refer to JEDEC MS-013 Variation AA JEDEC is the trademark of JEDEC SOLID STATE TECHNOLOGY ASSOCIATION.
PT2310 V1.0
- 16 -
June, 2005

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