PT2305-HT [PTC]
2.5W × 2 Class AB Audio Power Amplifier; 2.5W × 2的AB类音频功率放大器
| 型号： | PT2305-HT |
| 厂家： | 
PRINCETON TECHNOLOGY CORP |
| 描述： | 2.5W × 2 Class AB Audio Power Amplifier |
| 文件： | 总27页 (文件大小：539K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Tel: 886-2-66296288
Fax: 886-2-29174598
URL: http://www.princeton.com.tw
2.5W × 2 Class AB Audio Power Amplifier
PT2305
EDESCRIPTION
The PT2305 is an audio power amplifier utilizing CMOS Technology specially designed for audio
purpose. It can deliver 2.5W × 2 power output to the 4Ω load. The power consumption is very low in
stand-by. Total harmonic distortion is lower than 0.03%. The output structure is BTL (Bridge-Tied Load)
mode for driving speaker load mode. Built-in over-temperature protection, package size is not occupies
PCB space. It is suitable for small or portable products.
FEATURES
• CMOS technology
• Operating voltage: 2.7V ~ 6V
• Output power 2.5W × 2 (4Ω/10%THD)
• Built-in 31 steps volume controller
• Suppress the pop and click noise when mode changed
• Extreme low current consumption in Shutdown mode (Icc<0.7µA)
• Built-in over temperature protection
APPLICATIONS
• LCD monitor or TV
• Portable audio
• Multimedia speakers
• Other audio applications
PT2305 V1.1
- 1 -
May, 2005
Tel: 886-2-66296288
Fax: 886-2-29174598
URL: http://www.princeton.com.tw
2.5W × 2 Class AB Audio Power Amplifier
PT2305
BLOCK DIAGRAM
10KΩ
10KΩ
Mute
Control
Mute
-
+
-OUT1
DC_Vo1
20KΩ
20KΩ
-
Vo 1
+OUT1
+
-
Vin1
+
Volume
Control
Bias
Bias
31 steps
+
-
Vin2
Vo2
+
-
Shutdown
+OUT2
VDD
GND
Power
Management
20KΩ
20KΩ
+
-OUT2
-
Click and Pop
Suppression
Circuitry
Bypass
10KΩ
10KΩ
PT2305 V1.1
- 2 -
May, 2005
Tel: 886-2-66296288
Fax: 886-2-29174598
URL: http://www.princeton.com.tw
2.5W × 2 Class AB Audio Power Amplifier
PT2305
PIN CONFIGURATION
Bypass
1
2
20
19
18
17
16
15
14
13
12
11
GND
GND
-Out 1
VDD
GND
-OUT 2
VDD
3
4
+Out 1
GND
5
+Out 2
GND
Vo 2
PT2305
6
Shutdown
Mute
7
8
Vin 2
Vin 1
Vo 1
VDD
9
DC_Vol
10
PIN DESCRIPTION
Pin Name I/O
Description
Pin No.
Bypass
GND
O Internal bias reference bypassing
Ground
1
2, 6, 15, 19, 20
-OUT1
VDD
+OUT1
O Channel 1 Output (-)
Power Supply Input
O Channel 1 Output (+)
3
4, 9, 17
5
Shutdown pin。Entire IC into the shutdown mode when this
pin connected to the VDD
Shutdown
I
7
Mute
DC_Vol
Vo1
Vin1
Vin2
Vo2
+OUT2
-OUT2
I
I
I
I
I
I
Mute Pin, Output muted when it connected to VDD
DC Volume control input pin
Channel 1 output for external feedback circuit
Channel 1 audio input
Channel audio input
Channel 2 output for external feedback circuit
8
10
11
12
13
14
16
18
O Channel 2 Output (+)
O Channel 2 Output (-)
PT2305 V1.1
- 3 -
May, 2005
Tel: 886-2-66296288
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URL: http://www.princeton.com.tw
2.5W × 2 Class AB Audio Power Amplifier
PT2305
FUNCTION DESCRIPTION
POWER SUPPLY
The operating voltage of PT2305 is from 2.7V to 6V, In general operation 5V is recommended. When
the supply voltage less then 3V the IC can work properly, but the distortion reading will rise. After the
supply voltage over 6.5V, the higher stand-by current consumption will rising the temperature on chip
surface。
SHUTDOWN
When the DC supply still powered the chip Vcc, pull-up the shutdown pin to the Vcc level will take the
chip into the shutdown mode. After the shutdown mode is active the total current consumption is less
than 0.7µA. and the all of input or output pins no voltage output。When shutdown pin set to GND, the
IC is back to the normal operation.
Shutdown Pin
VDD
Output State
Shutdown ON
Normal
GND
MUTE
When the mute pin is connected to the VDD all of outputs signal will be muted immediately, otherwise
connected to the GND the IC is back to the normal operation.
Mute Pin
VDD
Output State
Mute ON
GND
Normal
INPUT GAIN ADJUST
The input gain of the PT2305 can be adjust by the external resistor, in normal operation 0dB gain
setting is recommended, please refer to the application circuit. If the source output level is not so high
(ex: < 2Vpp), increase the input gain can get the higher volume. The minimum value of the input series
resistance is 10KΩ for the modest input impedance.
To make sure the input stage will not be distortion by overload, please confirm the input signal level, for
the gain set please refer to the following table:
Operating Voltage
VDD=3V
Input Gain=-6dB
Vin <5Vpp
Input Gain=0dB
Vin <2.5Vpp
Vin<4Vpp
Input Gain=+6dB
Vin <1.25Vpp
Vin<2Vpp
VDD=5V
Vin <8Vpp
OVER TEMPERATURE PROTECTION
The PT2305 has a built-in over temperature protection circuit, it will turn off all power output when the
chip temperature over 150℃, ,the chip will return to normal operation automatically after the
temperature cool down to 105℃.
PT2305 V1.1
- 4 -
May, 2005
Tel: 886-2-66296288
Fax: 886-2-29174598
URL: http://www.princeton.com.tw
2.5W × 2 Class AB Audio Power Amplifier
PT2305
POP AND CLICK SURPPRESS
A power amplifier uses single supply voltage may almost have noise on output in the power-on period.
It is because of the output DC potential needs time to stable on 1/2Vcc, the period relative with the
capacitance on the Bypass pin. Higher CB value will extend the stable time, and also can suppress the
noise when power-on. In supply voltage=5V and CB=1µF, stable time is about 200mS。The value of CB
also relative with the value of the DC blocking capacitor connected in input terminal. In general
condition the time constant of DC blocking capacitor should be less than CB stable time.
Recommend parts values please refer to application circuit.
CB and delay time, please refer to following table:
CB
TON
2ms
20ms
44ms
94ms
200ms
0.01uF
0.1uF
0.22uF
0.47uF
1.0uF
VOLUME CONTROLLER
The PT2305 has a built-in 31 steps volume controller, output volume is determinate by voltage applied
at the DC Vol pin. Range is from 0dB ~ -75dB. The lower DC voltage is means more volume
attenuation. The attenuation levels are -1dB/step from 0dB ~ -6dB, -2dB/step from -6dB ~ -36dB,
-3dB/step from -36dB ~ -47dB, -4dB/step from -47dB ~ -51dB, -5dB/step from -51dB ~ -66dB and
-12dB/step to the last step at -78dB.
About relation between the volume setup and DC Vol, please refer to the following table.
PT2305 V1.1
- 5 -
May, 2005
Tel: 886-2-66296288
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2.5W × 2 Class AB Audio Power Amplifier
PT2305
VOLUME CONTROL TABLE
Gain
(dB)
0
Voltage Range (%VDD)
Voltage Range (VDD=5V)
Voltage Range (VDD=3V)
Step
Low
77.5 % 100.00 %
75.0 % 78.5 %
High
Recommended Low High Recommended Low
High
Recommended
3.000
2.306
2.231
2.156
2.081
2.006
1.931
1.856
1.781
1.706
1.631
1.556
1.481
1.406
1.331
1.256
1.181
1.106
1.031
0.956
0.881
0.806
0.731
0.656
0.581
0.506
0.431
0.356
0.281
0.206
0.000
1
2
3
4
5
6
7
8
100.000%
76.875 %
74.375 %
71.875 %
69.375 %
66.875 %
64.375 %
61.875 %
59.375 %
56.875 %
54.375 %
51.875 %
49.375 %
46.875 %
44.375 %
41.875 %
39.375 %
36.875 %
34.375 %
31.875 %
29.375 %
26.875 %
24.375 %
21.875 %
19.375 %
16.875 %
14.375 %
11.875 %
9.375 %
3.875 5.000
3.750 3.938
3.625 3.813
3.500 3.688
3.375 3.563
3.250 3.438
3.125 3.313
3.000 3.188
2.875 3.063
2.750 2.938
2.625 2.813
2.500 2.688
2.375 2.563
2.250 2.438
2.125 2.313
2.000 2.188
1.875 2.063
1.750 1.938
1.625 1.813
1.500 1.688
1.375 1.563
1.250 1.438
1.125 1.313
1.000 1.188
0.875 1.063
0.750 0.937
0.625 0.812
0.500 0.687
0.375 0.562
0.250 0.437
0.000 0.312
5.000
3.844
3.719
3.594
3.469
3.344
3.219
3.094
2.969
2.844
2.719
2.594
2.469
2.344
2.219
2.094
1.969
1.844
1.719
1.594
1.469
1.344
1.219
1.094
0.969
0.844
0.719
0.594
0.469
0.344
0.000
2.325 3.000
2.250 2.363
2.175 2.288
2.100 2.213
2.025 2.138
1.950 2.063
1.875 1.988
1.800 1.913
1.725 1.838
1.650 1.763
1.575 1.688
1.500 1.613
1.425 1.538
1.350 1.463
1.275 1.388
1.200 1.313
1.125 1.238
1.050 1.163
0.975 1.088
0.900 1.013
0.825 0.937
0.750 0.862
0.675 0.787
0.600 0.712
0.525 0.637
0.450 0.562
0.375 0.487
0.300 0.412
0.225 0.337
0.150 0.262
0.000 0.187
-1
-2
-3
-4
-5
-6
-8
72.5 % 76.25 %
70.0 % 73.75 %
67.5 % 71.25 %
65.0 % 68.75 %
62.5 % 66.25 %
60.5 % 63.75 %
57.5 % 61.25 %
55.0 % 58.75 %
52.5 % 56.25 %
50.0 % 53.75 %
47.5 % 51.25 %
45.0 % 48.75 %
42.5 % 46.25 %
40.0 % 43.75 %
37.5 % 41.25 %
35.0 % 38.75 %
32.5 % 36.25 %
30.0 % 33.75 %
27.5 % 31.25 %
25.0 % 28.75 %
22.5 % 26.25 %
20.0 % 23.75 %
17.5 % 21.25 %
15.0 % 18.75 %
12.5 % 16.25 %
10.0 % 13.75 %
9
-10
-12
-14
-16
-18
-20
-22
-24
-26
-28
-30
-32
-34
-36
-39
-42
-45
-47
-51
-56
-61
-66
-78
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
7.5 %
5.0 %
0.0 %
11.25 %
8.75 %
6.25 %
6.875 %
0.000 %
PT2305 V1.1
- 6 -
May, 2005
Tel: 886-2-66296288
Fax: 886-2-29174598
URL: http://www.princeton.com.tw
2.5W × 2 Class AB Audio Power Amplifier
PT2305
HEAT DISSIPATION
During normal operation, the chip only consumes very little stand-by current. In high output power
conditions, the package temperature will rise. For proper operating temperature, a modest heat sink
mounted on the top side of the chip is required. The thermal resistance requirement of the heat sink
demand may be obtained by the formula below:
θ
P
T
T
JA =
(TJ(max) – TA) ÷ PDISS
DISS = IC dissipation power
J (max) = Maximum chip conjunction temperature
= external environment temperature
A
θ
JA = thermal resistance from chip conjunction to ambience environment
With 60% estimated efficiency (eff), PT2305 in 2W + 2W output power dissipation is probably
DISS = ( Po eff ) - Po = 2.6W
P
÷
The maximum chip conjunction temperature is 150°C. Exceeding this temperature will damage the
chip, assuming the outside environment air temperature is 50°C. From the chip conjunction dissipation
to external environment thermal resistance θJA should be:
θJA = ( 150 – 50 ) ÷ 2.6 = 38.4℃/W
The PT2305 chip conjunction to case thermal resistance θJC is 26℃/W. Therefore the heat sink
thermal resistance should be:
θJA –θJC = 12.4℃/W
In normal operating, no need extra heat sink, only utilize the ground (copper foil) of PCB to heat
dissipation.
PT2305 V1.1
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May, 2005
Tel: 886-2-66296288
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2.5W × 2 Class AB Audio Power Amplifier
PT2305
ABSOLUTE MAXIMUM RATINGS
Parameter
Symbol
VDD
Min.
-
Max.
7
Unit
V
Supply voltage
℃
Operating temperature
Topr
-40
+85
℃
V
mA
Storage temperature
Maximum input voltage
Maximum input current
Tstg
Vimax
Iimax
-65
-0.3
-10
+150
VDD +0.3
+10
* Input pins surge current can reach 100mA does not induce the CMOS latched up.
PT2305 V1.1
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May, 2005
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2.5W × 2 Class AB Audio Power Amplifier
PT2305
ELECTRICAL CHARACTERISTICS
(Unless otherwise, Vcc=5V, bandwidth=22 ~ 22KHz)
Parameter
Supply voltage
Symbol
Conditions
Min. Typ. Max. Unit
VDD
2.7
5
6
V
Vin=0V
-
15
30
mA
Operating current
Is
V
shutdown=VDD
RIN=RF=20KΩ
Po=1W, RL=8Ω
-
-
-
-
-
-
-
0.7
0
0.3
1
2.2
2
2.5
1.1
1.5
2.0
±1
-
-
-
-
-
-
-
µA
dB
Two channels gain error
THD+N
Gerr
THD
%
W
Po=340mW, RL=32Ω
THD=1%, RL=3Ω
THD=1%, RL=4Ω
THD=10%, RL=4Ω
THD=1%, RL=8Ω
THD=10%, RL=8Ω
Pout=1.1W, RL=8Ω,
A-Weighted
A-Weighted
Vin=0V, +OUT ~ -OUT
F=1KHz
CB=1.0µF, f=120Hz
RIPPLE=200mVrms: RL= 8Ω
Power output
Po
1.0
-
Signal-to-noise ratio
SNR
-
93
-
dB
µV
Residual noise
Output offset
Channel separation
Power supply
rejection ratio
Vno
Voff
CS
25
-
-
40
10
70
50
±50 mV
-
dB
PSRR
Vatt
-
74
-
dB
V
DC Vol=5V
DC Vol=0V
F=1KHz -0.75
-75
0
-78
0
+0.75
Volume control range
dB
-
1
-
-
-
-
-
Volume setup step
Mute
Gstep
mute
Vatt=0 ~ -51dB
DC Vol=0V
Overheat close
-
dB
dB
-78
-
-
-
-
0.5
-
0.5
-
-
150
105
135
105
0.6
0.2
0.6
0.2
TSSOP
Back to work
Overheat close
Back to work
℃
Temperature protect
TH
SOP
Shutdown on
Shutdown off
Mute on
-
Shutdown voltage
Mute voltage
V
SD
MT
VDD
VDD
0.3
-
0.3
V
Mute off
PT2305 V1.1
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May, 2005
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2.5W × 2 Class AB Audio Power Amplifier
PT2305
PACKAGE THERMAL CHARACTERISTIC
PACKAGE TYPE: TSSOP, 20PINS, 173MIL
Parameter
From chip conjunction dissipation to
external environment
Symbol
Condition
Value
Unit
℃/W
θ
JA
JC
68.66
Ta=45℃
From chip conjunction dissipation to
package surface
℃/W
θ
22.94
PACKAGE TYPE: SOP, 20PINS, 300MIL
Parameter
From chip conjunction dissipation to
external environment
Symbol
Condition
Value
Unit
℃/W
θ
JA
JC
45.44
Ta=45℃
From chip conjunction dissipation to
package surface
℃/W
θ
27.00
PT2305 V1.1
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May, 2005
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2.5W × 2 Class AB Audio Power Amplifier
PT2305
TYPICAL PERFORMANCE CHARACTERISTICS
THD+N vs Output Power
THD+N vs Output Power
THD+N vs Output Power
THD+N vs Output Power
THD+N vs Output Power
THD+N vs Output Power
PT2305 V1.1
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2.5W × 2 Class AB Audio Power Amplifier
PT2305
THD+N vs Output Power
THD+N vs Frequency
THD+N vs Frequency
THD+N vs Frequency
THD+N vs Frequency
THD+N vs Frequency
PT2305 V1.1
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2.5W × 2 Class AB Audio Power Amplifier
PT2305
THD+N vs Output Power
THD+N vs Frequency
Output Power vs Load Resistance
Output Power vs Load Resistance
Power Supply Rejection Ratio
Dropout Voltage
PT2305 V1.1
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2.5W × 2 Class AB Audio Power Amplifier
PT2305
Volume Control Characteristics
Power Dissipation vs Output Power
2ꢀ25
2
1ꢀ75
1ꢀ5
1ꢀ25
1
0ꢀ75
0ꢀ5
0ꢀ25
0
2ꢀ5
3
3ꢀ5
4
4ꢀ5
5
5ꢀ5
Frequency(Hz)
SUPPLY VOLTAGE(V)
Crosstalk
Output Power vs Supply Voltage
15
12ꢀ5
10
7ꢀ5
5
2ꢀ5
0
2ꢀ5
3
3ꢀ5
4
4ꢀ5
5
5ꢀ5
SUPPLY VOLTAGE(V)
Supply Current vs Supply Voltage
Power Dissipation vs Output Power
PT2305 V1.1
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2.5W × 2 Class AB Audio Power Amplifier
PT2305
APPLICATION CIRCUIT
5V
CH 1
CH 2
+
0.1 µF
10 µF
Bypass
GND
GND
20
19
18
17
1
2
GND
-OUT 2
VDD
3
-Out 1
VDD
4
+Out 1
GND
5
+Out 2 16
GND 15
Vo 2 14
PT2305
20 K
6
CH 2 -in
20 K
Shutdown
Mute
7
33 4
Vin 2
Vin 1 12
Vo 1
13
8
10 4
VDD
9
33 4
DC Volu me
C ontrol
DC_Vol
11
10
20 K
CH 1 -in
+
1µF
20 K
PT2305 V1.1
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May, 2005
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2.5W × 2 Class AB Audio Power Amplifier
PT2305
ORDER INFORMATION
Valid Part Number
PT2305
Package Type
Top Code
PT2305
PT2305-HT
PT2305-S
PT2305-D
20 Pins, TSSOP, 173mil
20 Pins, HTSSOP, 173mil
20 Pins, SOP, 300mil
20 Pins, DIP, 300mil
PT2305-HT
PT2305-S
PT2305-D
PT2305 V1.1
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May, 2005
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2.5W × 2 Class AB Audio Power Amplifier
PT2305
PACKAGE INFORAMTION
20PINS, TSSOP, 173MIL
PT2305 V1.1
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2.5W × 2 Class AB Audio Power Amplifier
PT2305
Symbols
Min.
-
Nom.
Max.
1.20
0.15
1.05
0.30
0.25
0.20
0.16
6.60
A
A1
A2
b
b1
c
-
-
0.05
0.80
0.19
0.19
0.09
0.09
6.40
1.00
-
0.22
-
c1
D
-
6.50
E
6.40 BSC.
E1
e
L
4.30
0.45
4.40
0.65 BSC.
0.60
4.50
0.75
L1
R
R1
S
θ1
θ2
θ3
1.00 REF.
0.09
0.09
0.20
0°
-
-
-
-
-
-
-
8°
12 REF.
12 REF.
PT2305 V1.1
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2.5W × 2 Class AB Audio Power Amplifier
PT2305
Notes:
1. Dimensioning and tolerancing per ASME Y14.5M-1994.
2. Controlling Dimension: Millimeters
3. Dimension D does not include mold flash, protrusions or gate burrs. Mold flash, protrusions or gate
burrs shall not exceed 0.15 per end.
4. Dimension E1 does not include interlead flash or protrusion. Interlead flash or protrusion shall not
exceed 0.25 per side.
5. Dimension b does not include dambar protrusion. Allowable dambar protrusion shall be 0.08 mm
total in excess of the b dimension at maximum material condition. Dambar cannot be located on the
lower radius or the foot. Minimum space between protrusion and adjacent lead is 0.07 mm.
6. N is the maximum number of terminal positions for the specified package length. Depopulation is
allowed, but only under the following conditions:
- Depopulation may reduce N by increments of four leads only.
- Only end leads may be removed.
- Leads must be symmetrically arranged with respect to datum A (Note 10) to avoid any array
shifting.
7. Terminal numbers are shown for reference only.
8. Datum A and B to be determined at datum plane H.
9. Dimensions D and E1 to be determined at datum plane H.
10.This dimension applies only to variations with an even number of leads per side. For variations with
an odd number of leads per side, the center lead must be coincident with the package centerline,
datum A.
11.Cross section B-B to be determined at 0.10 to 0.25 mm from the lead tip.
12.Details of the pin 1 identifier are optional, but must be located within the zone indicated.
13.D1 and E2 minimum dimensions of thermally enhanced types are variables depending on device
function (die paddle size). D1 and E2 maximum dimensions can be equal to D/E1 maximum
dimensions. End user should verify actual size of exposed thermal pad for specific device
application.
14.A1 is defined as the vertical distance from the seating plane to the lowest point on the package
body excluding the lid and or thermal enhancement on cavity down package configurations.
15.Caution should be taken during design, assembly and processing to prevent deposited board
solder from holding the leads up off the board. This is applicable to thermal enhanced variations
where A1 dimension is allowed to be zero.
16.Refer to JEDEC MO-153 Variation AC
JEDEC is the trademark of JEDEC SOLID STATE TECHNOLOGY ASSOCIATION
PT2305 V1.1
- 19 -
May, 2005
Tel: 886-2-66296288
Fax: 886-2-29174598
URL: http://www.princeton.com.tw
2.5W × 2 Class AB Audio Power Amplifier
PT2305
20 PINS, HTSSOP, 173MIL
PT2305 V1.1
- 20 -
May, 2005
Tel: 886-2-66296288
Fax: 886-2-29174598
URL: http://www.princeton.com.tw
2.5W × 2 Class AB Audio Power Amplifier
PT2305
PT2305 V1.1
- 21 -
May, 2005
Tel: 886-2-66296288
Fax: 886-2-29174598
URL: http://www.princeton.com.tw
2.5W × 2 Class AB Audio Power Amplifier
PT2305
Symbols
Min.
-
Nom.
Max.
1.20
0.15
1.05
0.30
0.25
0.20
0.16
6.60
-
A
A1
A2
b
b1
c
c1
D
D1
E
-
-
0.05
0.80
0.19
0.19
0.09
0.09
6.40
2.20
1.00
-
0.22
-
-
6.50
-
6.40 BSC.
E1
E2
e
4.30
1.50
4.40
-
0.65 BSC.
4.50
-
L
0.45
0.60
0.75
L1
R
R1
S
θ1
θ2
θ3
1.00 REF.
0.09
0.09
0.20
0°
-
-
-
-
-
-
-
8°
12 REF.
12 REF.
PT2305 V1.1
- 22 -
May, 2005
Tel: 886-2-66296288
Fax: 886-2-29174598
URL: http://www.princeton.com.tw
2.5W × 2 Class AB Audio Power Amplifier
PT2305
Notes:
1. Dimensioning and tolerancing per ASME Y14.5M-1994.
2. Controlling Dimension: Millimeters
3. Dimension D does not include mold flash, protrusions or gate burrs. Mold flash, protrusions or gate
burrs shall not exceed 0.15 per end.
4. Dimension E1 does not include interlead flash or protrusion. Interlead flash or protrusion shall not
exceed 0.25 per side.
5. Dimension b does not include dambar protrusion. Allowable dambar protrusion shall be 0.08 mm
total in excess of the b dimension at maximum material condition. Dambar cannot be located on the
lower radius or the foot. Minimum space between protrusion and adjacent lead is 0.07 mm.
6. N is the maximum number of terminal positions for the specified package length. Depopulation is
allowed, but only under the following conditions:
- Depopulation may reduce N by increments of four leads only.
- Only end leads may be removed.
- Leads must be symmetrically arranged with respect to datum A (Note 10) to avoid any array
shifting.
7. Terminal numbers are shown for reference only.
8. Datum A and B to be determined at datum plane H.
9. Dimensions D and E1 to be determined at datum plane H.
10.This dimension applies only to variations with an even number of leads per side. For variations with
an odd number of leads per side, the center lead must be coincident with the package centerline,
datum A.
11.Cross section B-B to be determined at 0.10 to 0.25 mm from the lead tip.
12.Details of the pin 1 identifier are optional, but must be located within the zone indicated.
13.D1 and E2 minimum dimensions of thermally enhanced types are variables depending on device
function (die paddle size). D1 and E2 maximum dimensions can be equal to D/E1 maximum
dimensions. End user should verify actual size of exposed thermal pad for specific device
application.
14.A1 is defined as the vertical distance from the seating plane to the lowest point on the package
body excluding the lid and or thermal enhancement on cavity down package configurations.
15.Caution should be taken during design, assembly and processing to prevent deposited board
solder from holding the leads up off the board. This is applicable to thermal enhanced variations
where A1 dimension is allowed to be zero.
16.Refer to JEDEC MO-153 Variation ACT
JEDEC is the trademark of JEDEC SOLID STATE TECHNOLOGY ASSOCIATION
PT2305 V1.1
- 23 -
May, 2005
Tel: 886-2-66296288
Fax: 886-2-29174598
URL: http://www.princeton.com.tw
2.5W × 2 Class AB Audio Power Amplifier
PT2305
20 PINS, SOP, 300MIL
Symbol
Min.
2.35
0.10
0.33
0.23
12.60
7.40
Nom.
Max.
A
A1
B
C
D
E
2.65
0.30
0.51
0.32
13.00
7.60
e
1.27 bsc.
H
h
L
10.00
0.25
0.40
0°
10.65
0.75
1.27
8°
α
PT2305 V1.1
- 24 -
May, 2005
Tel: 886-2-66296288
Fax: 886-2-29174598
URL: http://www.princeton.com.tw
2.5W × 2 Class AB Audio Power Amplifier
PT2305
Notes:
1. Dimensioning and tolerancing per ANSI Y14.5M-1982.
2. Dimension “D” does not include mold flash, protrusions or gate burrs. Mold Flash, protrusion or gate
burrs shall not exceed 0.15 mm (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 the terminal positions (N=20)
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 AC.
JEDEC is the trademark of JEDEC SOLID STATE TECHNOLOGY ASSOCIATION.
PT2305 V1.1
- 25 -
May, 2005
Tel: 886-2-66296288
Fax: 886-2-29174598
URL: http://www.princeton.com.tw
2.5W × 2 Class AB Audio Power Amplifier
PT2305
20PINS, DIP, 300 MIL
PT2305 V1.1
- 26 -
May, 2005
Tel: 886-2-66296288
Fax: 886-2-29174598
URL: http://www.princeton.com.tw
2.5W × 2 Class AB Audio Power Amplifier
PT2305
Symbol
A
Min.
-
Nom.
-
Max.
0.210
-
A1
A2
b
b1
b2
b3
c
c1
D
D1
E
E1
e
eA
eB
eC
L
0.015
0.115
0.014
0.014
0.045
0.030
0.008
0.008
0.980
0.005
0.300
0.240
-
-
0.130
0.018
0.018
0.060
0.039
0.010
0.010
1.030
-
0.195
0.022
0.020
0.070
0.045
0.014
0.011
1.060
-
0.310
0.250
0.100 bsc.
0.300 bsc.
-
0.325
0.280
-
-
-
-
0.430
0.060
0.150
0.000
0.115
-
0.130
Notes:
1. All dimensions are in INCHES.
2. Dimensioning and tolerancing per ANSI Y14.5M-1982.
3. Dimension ”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 leads unconstrained.
7. N is the number of the terminal positions (N=20)
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 (0.25mm)
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 AD.
JEDEC is the trademark of JEDEC SOLID STATE TECHNOLOGY ASSOCIATION.
PT2305 V1.1
- 27 -
May, 2005
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