AD630BDZ

更新时间： 2024-02-24 20:10:02

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
8页	289K
描述
Balanced Modulator/Demodulator

阅读下载

获取价格

技术参数
数据手册

如果您发现信息不准确，欢迎纠错

AD630BDZ 技术参数

是否Rohs认证：	不符合	生命周期：	Obsolete
零件包装代码：	QLCC	包装说明：	CERAMIC, LCC-20
针数：	20	Reach Compliance Code：	not_compliant
ECCN代码：	5A991.A	HTS代码：	8542.39.00.01
风险等级：	5.02	Is Samacsys：	N
商用集成电路类型：	CONSUMER CIRCUIT	JESD-30 代码：	S-CQCC-N20
JESD-609代码：	e0	长度：	8.89 mm
端子数量：	20	最高工作温度：	125 °C
最低工作温度：	-55 °C	封装主体材料：	CERAMIC, METAL-SEALED COFIRED
封装代码：	QCCN	封装形状：	SQUARE
封装形式：	CHIP CARRIER	峰值回流温度（摄氏度）：	220
认证状态：	Not Qualified	座面最大高度：	2.54 mm
最大压摆率：	5 mA	最大供电电压 (Vsup)：	16.5 V
最小供电电压 (Vsup)：	5 V	表面贴装：	YES
温度等级：	MILITARY	端子面层：	Tin/Lead (Sn/Pb)
端子形式：	NO LEAD	端子节距：	1.27 mm
端子位置：	QUAD	处于峰值回流温度下的最长时间：	30
宽度：	8.89 mm	Base Number Matches：	1

AD630BDZ 数据手册

AD630

to Figure 18b and is shown in the upper trace of Figure 24. It is

attenuated 100,000 times normalized to the output, B, of the

summing amplifier. A noise signal which might represent, for

example, background and detector noise in the chopped radia-

tion case, is added to the modulated signal by the summing

amplifier. This signal is simply band limited clipped white noise.

Figure 24 shows the sum of attenuated signal plus noise in the

center trace. This combined signal is demodulated synchro-

nously using phase information derived from the modulator,

and the result is low-pass filtered using a 2-pole simple filter

which also provides a gain of 100 to the output. This recovered

signal is the lower trace of Figure 24.

20V

200␮s

BRIDGE EXCITATION

(20V/DIV) (A)

100

AMPLIFIED BRIDGE

OUTPUT (5V/DIV) (B)

DEMODULATED BRIDGE

OUTPUT (5V/DIV) (C)

FILTER OUTPUT (2V/DIV) (D)

Figure 22. AC Bridge Waveforms

The combined modulated signal and interfering noise used for

this illustration is similar to the signals often requiring a lock-in

amplifier for detection. The precision input performance of the

AD630 provides more than 100 dB of signal range and its dy-

namic response permits it to be used with carrier frequencies

more than two orders of magnitude higher than in this example.

A more sophisticated low-pass output filter will aid in rejecting

wider bandwidth interference.

LOCK-IN AMPLIFIER APPLICATIONS

Lock-in amplification is a technique which is used to separate a

small, narrow band signal from interfering noise. The lock-in

amplifiers acts as a detector and narrow band filter combined.

Very small signals can be detected in the presence of large

amounts of uncorrelated noise when the frequency and phase of

the desired signal are known.

The lock-in amplifier is basically a synchronous demodulator

followed by a low-pass filter. An important measure of perfor-

mance in a lock-in amplifier is the dynamic range of its demodu-

lator. The schematic diagram of a demonstration circuit which

exhibits the dynamic range of an AD630 as it might be used in a

lock-in amplifier is shown in Figure 23. Figure 24 is an oscillo-

scope photo showing the recovery of a signal modulated at

400 Hz from a noise signal approximately 100,000 times larger;

a dynamic range of 100 dB.

OUTLINE DIMENSIONS

Dimensions shown in inches and (mm).

20-Lead Ceramic DIP (D-20)

CLIPPED

BAND-LIMITED

WHITE NOISE

AD630

5k⍀

100R

10k⍀

AD542

2.5k⍀

AD542

2.5k⍀

100R

100dB

20-Lead Plastic DIP (N-20)

ATTENUATION

14 10k⍀

OUTPUT

LOW PASS

FILTER

0.1Hz

MODULATED

400Hz

CARRIER

PHASE

CARRIER

REFERENCE

Figure 23. Lock-In Amplifier

100

MODULATED SIGNAL (A)

(UNATTENUATED)

LCC (E-20A)

ATTENUATED SIGNAL

PLUS NOISE (B)

0.200 (5.08)

BSC

0.075

(1.91)

REF

0.100 (2.54)

0.064 (1.63)

0.100

(2.54)

BSC

0.015 (0.38)

MIN

OUTPUT

0.095 (2.41)

0.075 (1.90)

5mV

0.028 (0.71)

0.022 (0.56)

0.358 (9.09)

0.342 (8.69)

0.358

(9.09)

MAX

0.011 (0.28)

0.007 (0.18)

R TYP

Figure 24. Lock-In Amplifier Waveforms

BOTTOM

VIEW

0.050

(1.27)

BSC

The test signal is produced by modulating a 400 Hz carrier with

a 0.1 Hz sine wave. The signals produced, for example, by

chopped radiation (IR, optical, etc.) detectors may have similar

low frequency components. A sinusoidal modulation is used for

clarity of illustration. This signal is produced by a circuit similar

0.075

(1.91)

REF

TYP

0.150

(3.81)

BSC

0.055 (1.40)

0.045 (1.14)

0.088 (2.24)

0.054 (1.37)

–8–

REV. C

1...5 6 78

下载PDF

与AD630BDZ相关器件

型号	品牌	描述	获取价格	数据表
AD630J	ADI	Balanced Modulator/Demodulator	获取价格
AD630JCHIP	ADI	IC SPECIALTY CONSUMER CIRCUIT, UUC20, DIE-20, Consumer IC:Other	获取价格
AD630JCHIPS	ADI	Balanced Modulator/Demodulator	获取价格
AD630JN	ADI	Balanced Modulator/Demodulator	获取价格
AD630JN/+	ADI	AD630JN/+	获取价格
AD630JNZ	ADI	Balanced Modulator/Demodulator	获取价格

产品中心

服务支持

精选活动

关于我们

帮助中心

AD630BDZ

AD630BDZ 技术参数

AD630BDZ 数据手册

与AD630BDZ相关器件

与AD630BDZ相关文章

您还可以找

产品中心

服务支持

精选活动

关于我们

帮助中心

AD630BDZ

AD630BDZ 技术参数

AD630BDZ 数据手册

与AD630BDZ相关器件

与AD630BDZ相关文章

您还可以找

您在本页遇到什么问题？