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

X  

DAC902U bảng dữ liệu(PDF) 11 Page - Burr-Brown (TI)

[Old version datasheet] Texas Instruments acquired Burr-Brown Corporation. Click here to check the latest version.
tên linh kiện DAC902U
Giải thích chi tiết về linh kiện  12-Bit, 165MSPS DIGITAL-TO-ANALOG CONVERTER
Download  16 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
nhà sản xuất  BURR-BROWN [Burr-Brown (TI)]
Trang chủ  http://www.burr-brown.com
Logo BURR-BROWN - Burr-Brown (TI)

DAC902U bảng dữ liệu(HTML) 11 Page - Burr-Brown (TI)

Back Button DAC902U Datasheet HTML 7Page - Burr-Brown (TI) DAC902U Datasheet HTML 8Page - Burr-Brown (TI) DAC902U Datasheet HTML 9Page - Burr-Brown (TI) DAC902U Datasheet HTML 10Page - Burr-Brown (TI) DAC902U Datasheet HTML 11Page - Burr-Brown (TI) DAC902U Datasheet HTML 12Page - Burr-Brown (TI) DAC902U Datasheet HTML 13Page - Burr-Brown (TI) DAC902U Datasheet HTML 14Page - Burr-Brown (TI) DAC902U Datasheet HTML 15Page - Burr-Brown (TI) Next Button
Zoom Inzoom in Zoom Outzoom out
 11 / 16 page
background image
11
®
DAC902
APPLICATION INFORMATION
THEORY OF OPERATION
The architecture of the DAC902 uses the current steering
technique to enable fast switching and a high update rate.
The core element within the monolithic D/A converter is an
array of segmented current sources, which are designed to
deliver a full-scale output current of up to 20mA (see
Figure 1). An internal decoder addresses the differential
current switches each time the DAC is updated and a
corresponding output current is formed by steering all
currents to either output summing node, IOUT or IOUT.
The complementary outputs deliver a differential output
signal, which improves the dynamic performance through
reduction of even-order harmonics, common-mode signals
(noise), and double the peak-to-peak output signal swing by
a factor of two, compared to single-ended operation.
The segmented architecture results in a significant reduc-
tion of the glitch energy, improves the dynamic perfor-
mance (SFDR), and DNL. The current outputs maintain a
very high output impedance of greater than 200k
Ω.
The full-scale output current is determined by the ratio of
the internal reference voltage (1.24V) and an external
resistor, RSET. The resulting IREF is internally multiplied by
a factor of 32 to produce an effective DAC output current
that can range from 2mA to 20mA, depending on the value
of RSET.
The DAC902 is split into a digital and an analog portion,
each of which is powered through its own supply pin. The
digital section includes edge-triggered input latches and the
decoder logic, while the analog section comprises the cur-
rent source array with its associated switches, and the
reference circuitry.
DAC TRANSFER FUNCTION
The total output current, IOUTFS, of the DAC902 is the
summation of the two complementary output currents:
IOUTFS = IOUT + IOUT
(1)
The individual output currents depend on the DAC code and
can be expressed as:
IOUT = IOUTFS • (Code/4096)
(2)
IOUT = IOUTFS • (4095 - Code/4096)
(3)
where ‘Code’ is the decimal representation of the DAC data
input word. Additionally, IOUTFS is a function of the refer-
ence current IREF, which is determined by the reference
voltage and the external setting resistor, RSET.
IOUTFS = 32 • IREF = 32 • VREF/RSET
(4)
In most cases the complementary outputs will drive resistive
loads or a terminated transformer. A signal voltage will
develop at each output according to:
VOUT = IOUT • RLOAD
(5)
VOUT = IOUT • RLOAD
(6)
FIGURE 1. Functional Block Diagram of the DAC902.
PMOS
Current
Source
Array
LSB
Switches
Segmented
MSB
Switches
+1.24V Ref
Latches and Switch
Decoder Logic
12-Bit Data Input
D11...D0
DAC902
Full-Scale
Adjust
Resistor
Ref
Control
Amp
Ref
Buffer
BW
+V
D
+V
A
R
SET
2k
CLK
DGND
Ref
Input
0.1
µF
INT/EXT
I
OUT
I
OUT
BYP
PD
20pF
50
50
20pF
1:1
V
OUT
0.1
µF
400pF
0.1
µF
+3V to +5V
Analog
Bandwidth
Control
+3V to +5V
Digital
FSA
REF
IN
AGND
Analog
Ground
Digital
Ground
Power Down
(internal pull-down)
Clock
Input
NOTE: Supply bypassing not shown.


Số phần tương tự - DAC902U

nhà sản xuấttên linh kiệnbảng dữ liệuGiải thích chi tiết về linh kiện
logo
Texas Instruments
DAC902U TI1-DAC902U Datasheet
802Kb / 24P
[Old version datasheet]   12-Bit, 165MSPS DIGITAL-TO-ANALOG CONVERTER
DAC902U/1K TI1-DAC902U/1K Datasheet
802Kb / 24P
[Old version datasheet]   12-Bit, 165MSPS DIGITAL-TO-ANALOG CONVERTER
DAC902U/1KG4 TI1-DAC902U/1KG4 Datasheet
802Kb / 24P
[Old version datasheet]   12-Bit, 165MSPS DIGITAL-TO-ANALOG CONVERTER
DAC902UG4 TI1-DAC902UG4 Datasheet
802Kb / 24P
[Old version datasheet]   12-Bit, 165MSPS DIGITAL-TO-ANALOG CONVERTER
More results

Mô tả tương tự - DAC902U

nhà sản xuấttên linh kiệnbảng dữ liệuGiải thích chi tiết về linh kiện
logo
Texas Instruments
DAC902 TI1-DAC902 Datasheet
802Kb / 24P
[Old version datasheet]   12-Bit, 165MSPS DIGITAL-TO-ANALOG CONVERTER
logo
Burr-Brown (TI)
DAC904 BURR-BROWN-DAC904 Datasheet
192Kb / 16P
   14-Bit, 165MSPS DIGITAL-TO-ANALOG CONVERTER
logo
Texas Instruments
DAC900 TI1-DAC900 Datasheet
798Kb / 24P
[Old version datasheet]   10-Bit, 165MSPS DIGITAL-TO-ANALOG CONVERTER
DAC904 TI1-DAC904 Datasheet
789Kb / 23P
[Old version datasheet]   14-Bit, 165MSPS DIGITAL-TO-ANALOG CONVERTER
DAC908 TI1-DAC908 Datasheet
789Kb / 23P
[Old version datasheet]   8-Bit, 165MSPS DIGITAL-TO-ANALOG CONVERTER
logo
Burr-Brown (TI)
DAC900 BURR-BROWN-DAC900 Datasheet
192Kb / 16P
   10-Bit, 165MSPS DIGITAL-TO-ANALOG CONVERTER
DAC908 BURR-BROWN-DAC908 Datasheet
180Kb / 15P
   8-Bit, 165MSPS DIGITAL-TO-ANALOG CONVERTER
logo
DATEL, Inc.
5962-8850801XA DATEL-5962-8850801XA Datasheet
157Kb / 1P
   12-Bit Analog to Digital Converter
5962-8952802XA DATEL-5962-8952802XA Datasheet
149Kb / 1P
   12-Bit Digital to Analog Converter
5962-8952802XC DATEL-5962-8952802XC Datasheet
149Kb / 1P
   12-Bit Digital to Analog Converter
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