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AD8614

更新时间： 2024-02-26 11:16:23
品牌 Logo 应用领域
亚德诺 - ADI 运算放大器
页数 文件大小 规格书
8页 306K
描述
Single and Quad +18 V Operational Amplifiers

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AD8614 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Obsolete零件包装代码：SOIC
包装说明：ROHS COMPLIANT, MO-178AA, SOT-23, 5 PIN针数：5
Reach Compliance Code：unknownECCN代码：EAR99
HTS代码：8542.33.00.01风险等级：5.26
放大器类型：OPERATIONAL AMPLIFIER架构：VOLTAGE-FEEDBACK
最大平均偏置电流 (IIB)：0.0005 µA25C 时的最大偏置电流 (IIB)：0.4 µA
标称共模抑制比：75 dB频率补偿：YES
最大输入失调电压：3000 µVJESD-30 代码：R-PDSO-G5
JESD-609代码：e3长度：2.9 mm
低-偏置：NO低-失调：NO
微功率：NO湿度敏感等级：1
功能数量：1端子数量：5
最高工作温度：85 °C最低工作温度：-20 °C
封装主体材料：PLASTIC/EPOXY封装代码：LSSOP
封装等效代码：TSOP5/6,.11,37封装形状：RECTANGULAR
封装形式：SMALL OUTLINE, LOW PROFILE, SHRINK PITCH包装方法：TAPE AND REEL
峰值回流温度（摄氏度）：260功率：NO
电源：5/18 V可编程功率：NO
认证状态：Not Qualified座面最大高度：1.45 mm
标称压摆率：7.5 V/us子类别：Operational Amplifier
最大压摆率：1.5 mA供电电压上限：20 V
标称供电电压 (Vsup)：18 V表面贴装：YES
技术：BIPOLAR温度等级：OTHER
端子面层：Matte Tin (Sn)端子形式：GULL WING
端子节距：0.95 mm端子位置：DUAL
处于峰值回流温度下的最长时间：40标称均一增益带宽：5500 kHz
最小电压增益：10000宽带：NO
宽度：1.6 mmBase Number Matches：1

AD8614 数据手册

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AD8614/AD8644  
5V  
The optimum values for the snubber network should be determined  
empirically based on the size of the capacitive load. Table I shows a  
few sample snubber network values for a given load capacitance.  
5V  
10  
V
DD  
C1  
100␮F  
R3  
20⍀  
28  
35  
V
2
3
DD  
U1-A  
Table I. Snubber Networks for Large Capacitive Loads  
1
4
R1  
2k⍀  
LEFT  
OUT  
Load Capacitance  
(CL)  
Snubber Network  
(RS, CS)  
5
AD1881  
(AC'97)  
0.47 nF  
4.7 nF  
47 nF  
300 Ω, 0.1 µF  
30 Ω, 1 µF  
5 Ω, 1 µF  
6
C2  
100␮F  
R4  
20⍀  
36  
RIGHT  
OUT  
7
8
U1-B  
V
Direct Access Arrangement  
SS  
9
R2  
2k⍀  
Figure 26 shows a schematic for a 5 V single supply transmit/receive  
telephone line interface for 600 Ω transmission systems. It allows  
full duplex transmission of signals on a transformer-coupled 600 Ω  
line. Amplifier A1 provides gain that can be adjusted to meet the  
modem output drive requirements. Both A1 and A2 are configured  
to apply the largest possible differential signal to the transformer.  
The largest signal available on a single 5 V supply is approximately  
4.0 V p-p into a 600 Ω transmission system. Amplifier A3 is config-  
ured as a difference amplifier to extract the receive information from  
the transmission line for amplification by A4. A3 also prevents the  
transmit signal from interfering with the receive signal. The gain of  
A4 can be adjusted in the same manner as A1’s to meet the modem’s  
input signal requirements. Standard resistor values permit the use of  
SIP (Single In-Line Package) format resistor arrays. Couple this with  
the AD8644 14-lead SOIC or TSSOP package and this circuit can  
offer a compact solution.  
NOTE: ADDITIONAL PINS  
OMITTED FOR CLARITY  
U1 = AD8644  
If gain is required from the output amplifier, four additional  
resistors should be added as shown in Figure 28. The gain of  
the AD8644 can be set as:  
R6  
R5  
AV  
=
5V  
R6  
20k⍀  
V
DD  
5V  
38  
35  
V
DD  
C1  
100␮F  
R3  
20⍀  
LEFT  
10  
OUT  
2
3
R5  
10k⍀  
P1  
U1-A  
Tx GAIN  
ADJUST  
1
4
R2  
R1  
2k⍀  
9.09k⍀  
5
C1  
0.1␮F  
R1  
10k⍀  
TRANSMIT  
TxA  
TO TELEPHONE  
LINE  
2k⍀  
R3  
360⍀  
2
1
1:1  
27  
V
REF  
A1  
3
R5  
10k⍀  
6.2V  
6.2V  
ZO  
600⍀  
6
AD1881  
(AC97)  
C2  
100␮F  
R4  
20⍀  
5V DC  
T1  
7
8
R6  
R5  
10k⍀  
U1-B  
6
5
MIDCOM  
671-8005  
10k⍀  
R7  
10k⍀  
9
7
R2  
2k⍀  
36  
RIGHT  
OUT  
A2  
V
R8  
10k⍀  
SS  
10␮F  
R6  
20k⍀  
U1 = AD8644  
R10  
R9  
10k⍀  
10k⍀  
P2  
Rx GAIN  
ADJUST  
R6  
NOTE: ADDITIONAL PINS  
OMITTED FOR CLARITY  
A
=
= +6dB WITH VALUES SHOWN  
V
R14  
14.3k⍀  
R13  
10k⍀  
R5  
RECEIVE  
RxA  
2
3
R11  
10k⍀  
1
A3  
2k⍀  
C2  
0.1␮F  
6
R12  
10k⍀  
7
A4  
5
A1, A2 = 1/2 AD8644  
A3, A4 = 1/2 AD8644  
Input coupling capacitors are not required for either circuit as  
the reference voltage is supplied from the AD1881.  
R4 and R5 help protect the AD8644 output in case the output  
jack or headphone wires are accidentally shorted to ground.  
The output coupling capacitors C1 and C2 block dc current  
from the headphones and create a high-pass filter with a corner  
frequency of:  
A One-Chip Headphone/Microphone Preamplifier Solution  
Because of its high output current performance, the AD8644  
makes an excellent amplifier for driving an audio output jack in  
a computer application. Figure 27 shows how the AD8644 can  
be interfaced with an ac codec to drive headphones or speakers  
1
f−3dB  
=
2πC1 R4 + R  
(
)
L
Where RL is the resistance of the headphones.  
1...45678

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