công cụ tìm kiếm bảng dữ liệu linh kiện điện tử
  Vietnamese  ▼
ALLDATASHEET.VN

X  

AD694JN bảng dữ liệu(PDF) 4 Page - Analog Devices

tên linh kiện AD694JN
Giải thích chi tiết về linh kiện  4??0 mA Transmitter
Download  16 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
nhà sản xuất  AD [Analog Devices]
Trang chủ  http://www.analog.com
Logo AD - Analog Devices

AD694JN bảng dữ liệu(HTML) 4 Page - Analog Devices

  AD694JN Datasheet HTML 1Page - Analog Devices AD694JN Datasheet HTML 2Page - Analog Devices AD694JN Datasheet HTML 3Page - Analog Devices AD694JN Datasheet HTML 4Page - Analog Devices AD694JN Datasheet HTML 5Page - Analog Devices AD694JN Datasheet HTML 6Page - Analog Devices AD694JN Datasheet HTML 7Page - Analog Devices AD694JN Datasheet HTML 8Page - Analog Devices AD694JN Datasheet HTML 9Page - Analog Devices Next Button
Zoom Inzoom in Zoom Outzoom out
 4 / 16 page
background image
AD694
–4–
REV. B
Typical Minimum Supply Voltage vs. Temperature for 2 V
and 10 V Full Scale
Maximum RL vs. Supply Voltage
Voltage Reference Power Supply Rejection
IOUT: Voltage Compliance vs. Temperature
FUNCTIONAL DESCRIPTION
The operation of the AD694 can best be understood by dividing
the circuit into three functional parts (see Figure 1). First, a
single supply input amplifier buffers the high level, single-ended
input signal. The buffer amplifier drives the second section, a
voltage to current (V/I) converter, that makes a 0 to 16 mA sig-
nal dependent current.
Figure 1. Functional Block Diagram
The third section, a voltage reference and offset generator, is re-
sponsible for providing the 4 mA offset current signal.
BUFFER AMPLIFIER
The buffer amplifier is a single supply amplifier that may be
used as a unity gain buffer, an output amplifier for a current
output DAC, or as a gain block to amplify low level signals. The
amplifier’s PNP input stage has a common-mode range that ex-
tends from a few hundred mV below ground to within 2.5 V of
VS. The Class A output of the amplifier appears at Pin 1 (FB).
The output range extends from about 1 mV above common to
within 2.5 V of VS when the amplifier is operated as a follower.
The amplifier can source a maximum load of 5 k
Ω, but can sink
only as much as its internal 10 k
Ω pulldown resistor allows.
V/I CONVERTER
The ground referenced, input signal from the buffer amplifier is
converted to a 0 to 0.8 mA current by A2 and level shifted to
the positive supply. A current mirror then multiplies this signal
by a factor of 20 to make the signal current of 0 to 16 mA. This
technique allows the output stage to drive a load to within 2 V
of the positive supply (VS). Amplifier A2 forces the voltage at
Pin 1 across resistors R1 and R2 by driving the Darlington tran-
sistor, Q2. The high gain Darlington transmits the resistor cur-
rent to its collector and to R3 (900
Ω). A3 forces the level
shifted signal across the 45
Ω resistor to get a current gain of 20.
The transfer function of the V/I stage is therefore:
IV
R1
R2
OUT
PIN1
+
()
20
/
resulting in a 0-16 mA output swing for a 0–10 V input. Tying
Pin 4 (2 V FS) to ground shorts out R2 and results in a 2 V
full-scale input for a 16 mA output span.
The output stage of the V/I converter is of a unique design that
allows the IOUT pin to drive a load below the common (sub-
strate) potential of the device. The output transistor can always
drive a load to a point 36 V below the positive supply (VS). An


Số phần tương tự - AD694JN

nhà sản xuấttên linh kiệnbảng dữ liệuGiải thích chi tiết về linh kiện
logo
Analog Devices
AD694JN AD-AD694JN Datasheet
163Kb / 16P
   4??0 mA Transmitter
REV. B
AD694JN AD-AD694JN Datasheet
163Kb / 16P
   4??0 mA Transmitter
REV. B
AD694JN AD-AD694JN Datasheet
163Kb / 16P
   4??0 mA Transmitter
REV. B
logo
List of Unclassifed Man...
AD694JN ETC2-AD694JN Datasheet
2Mb / 31P
   SEMICONDUCTORS
logo
Analog Devices
AD694JNZ AD-AD694JNZ Datasheet
163Kb / 16P
   4??0 mA Transmitter
REV. B
More results

Mô tả tương tự - AD694JN

nhà sản xuấttên linh kiệnbảng dữ liệuGiải thích chi tiết về linh kiện
logo
Analog Devices
AD694BRZ AD-AD694BRZ Datasheet
163Kb / 16P
   4??0 mA Transmitter
REV. B
AD694BRZ-REEL AD-AD694BRZ-REEL Datasheet
163Kb / 16P
   4??0 mA Transmitter
REV. B
AD694ARZ AD-AD694ARZ Datasheet
163Kb / 16P
   4??0 mA Transmitter
REV. B
AD694 AD-AD694 Datasheet
163Kb / 16P
   4??0 mA Transmitter
REV. B
AD694BRZ AD-AD694BRZ Datasheet
163Kb / 16P
   4??0 mA Transmitter
REV. B
AD694JNZ AD-AD694JNZ Datasheet
163Kb / 16P
   4??0 mA Transmitter
REV. B
AD693BQ AD-AD693BQ Datasheet
462Kb / 12P
   Loop-Powered 4??0 mA Sensor Transmitter
REV. A
AD420ANZ-32 AD-AD420ANZ-32 Datasheet
303Kb / 16P
   Serial Input 16-Bit 4 mA??0 mA, 0 mA??0 mA DAC
Rev. H
AD420 AD-AD420_11 Datasheet
303Kb / 16P
   Serial Input 16-Bit 4 mA??0 mA, 0 mA??0 mA DAC
Rev. H
AD420 AD-AD420_15 Datasheet
303Kb / 16P
   Serial Input 16-Bit 4 mA??0 mA, 0 mA??0 mA DAC
Rev. H
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16


bảng dữ liệu tải về

Go To PDF Page


Link URL




Chính sách bảo mật
ALLDATASHEET.VN
Cho đến nay ALLDATASHEET có giúp ích cho doanh nghiệp của bạn hay không?  [ DONATE ] 

Alldatasheet là   |   Quảng cáo   |   Liên lạc với chúng tôi   |   Chính sách bảo mật   |   Trao đổi link   |   Tìm kiếm theo nhà sản xuất
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com