전자부품 데이터시트 검색엔진
  Korean  ▼
ALLDATASHEET.CO.KR

X  

AD648JR-REEL7 데이터시트(PDF) 7 Page - Analog Devices

부품명 AD648JR-REEL7
상세설명  Dual Precision, Low Power BiFET Op Amp
Download  12 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
제조업체  AD [Analog Devices]
홈페이지  http://www.analog.com
Logo AD - Analog Devices

AD648JR-REEL7 데이터시트(HTML) 7 Page - Analog Devices

Back Button AD648JR-REEL7 Datasheet HTML 3Page - Analog Devices AD648JR-REEL7 Datasheet HTML 4Page - Analog Devices AD648JR-REEL7 Datasheet HTML 5Page - Analog Devices AD648JR-REEL7 Datasheet HTML 6Page - Analog Devices AD648JR-REEL7 Datasheet HTML 7Page - Analog Devices AD648JR-REEL7 Datasheet HTML 8Page - Analog Devices AD648JR-REEL7 Datasheet HTML 9Page - Analog Devices AD648JR-REEL7 Datasheet HTML 10Page - Analog Devices AD648JR-REEL7 Datasheet HTML 11Page - Analog Devices Next Button
Zoom Inzoom in Zoom Outzoom out
 7 / 12 page
background image
AD648
REV. C
–7–
SIGN BIT
BINARY NUMBER IN DAC REGISTER ANALOG OUTPUT
0
1111 1111 1111
+VIN
(4095/4096)
0
0000 0000 0000
0 VOLTS
1
0000 0000 0000
0 VOLTS
1
1111 1111 1111
–VIN
(4095/4096)
NOTE: SIGN BIT AT "0" CONNECTS THE NONINVERTING INPUT OF
A2 TO ANALOG COMMON
Figure 25. Sign Magnitude Code Table
Figure 23c shows a diode clamp protection scheme for an I-to-V
converter using low leakage diodes. Because the diodes are con-
nected to the op amp’s summing junction, which is a virtual
ground, their leakage contribution is minimal.
Figure 23c. I-to-V Converter with Diode Input Protection
Exceeding the negative common-mode range on either input
terminal causes a phase reversal at the output, forcing the ampli-
fier output to the corresponding high or low state. Exceeding
the negative common mode on both inputs simultaneously
forces the output high. Exceeding the positive common-mode
range on a single input doesn’t cause a phase reversal; but if
both inputs exceed the limit, the output will be forced high. In
all cases, normal amplifier operation is resumed when input
voltages are brought back within the common-mode range.
D/A CONVERTER BIPOLAR OUTPUT BUFFER
The circuit in Figure 24 provides 4 quadrant multiplication with
a resolution of 12 bits. The AD648 is used to convert the AD7545
CMOS DAC’s output current to a voltage and provides the
necessary level shifting to achieve a bipolar voltage output. The
circuit operates with a 12-bit plus sign input code. The transfer
function is shown in Figure 25.
The AD7592 is a fully protected dual CMOS SPDT switch with
data latches. R4 and R5 should match to within 0.01% to main-
tain the accuracy of the converter. A mismatch between R4 and
R5 introduces a gain error. Overall gain is trimmed by adjusting
RIN. The AD648’s low input offset voltage, low drift over tem-
perature, and excellent dynamics make it an attractive low
power output buffer.
The input offset voltage of the AD648 output amplifier results
in an output error voltage. This error voltage equals the input
offset voltage of the op amp times the noise gain of the amplifier.
That is:
VOS Output = VOS Input 1 +
RFB
RO
RFB is the feedback resistor for the op amp, which is internal to
the DAC. RO is the DAC’s R-2R ladder output resistance. The
value of RO is code dependent. This has the effect of changing
the offset error voltage at the amplifier’s output. An output am-
plifier with a sub millivolt input offset voltage is needed to pre-
serve the linearity of the DAC’s transfer function.
Figure 24. 12-Bit Plus Sign Magnitude D/A Converter


유사한 부품 번호 - AD648JR-REEL7

제조업체부품명데이터시트상세설명
logo
Analog Devices
AD648 AD-AD648_15 Datasheet
209Kb / 12P
   Dual Precision, Low Power BiFET Op Amp
REV. E
More results

유사한 설명 - AD648JR-REEL7

제조업체부품명데이터시트상세설명
logo
Analog Devices
AD648 AD-AD648_15 Datasheet
209Kb / 12P
   Dual Precision, Low Power BiFET Op Amp
REV. E
AD548SH AD-AD548SH Datasheet
221Kb / 12P
   Precision, Low Power BiFET Op Amp
REV. D
AD548 AD-AD548 Datasheet
198Kb / 8P
   Precision, Low Power BiFET Op Amp
REV. B
AD548 AD-AD548_02 Datasheet
221Kb / 12P
   Precision, Low Power BiFET Op Amp
REV. D
AD548KNZ AD-AD548KNZ Datasheet
221Kb / 12P
   Precision, Low Power BiFET Op Amp
REV. D
AD548 AD-AD548_15 Datasheet
221Kb / 12P
   Precision, Low Power BiFET Op Amp
REV. D
AD642 AD-AD642 Datasheet
395Kb / 6P
   Precision, Low Cost Dual BiFET Op Amp
REV. 0
AD642 AD-AD642_15 Datasheet
399Kb / 6P
   Precision, Low Cost Dual BiFET Op Amp
REV. 0
AD712 AD-AD712_06 Datasheet
522Kb / 20P
   Dual Precision, Low Cost, High Speed BiFET Op Amp
Rev. G
AD712 AD-AD712 Datasheet
635Kb / 15P
   Dual Precision, Low Cost, High Speed, BiFET Op Amp
REV. B
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12


데이터시트 다운로드

Go To PDF Page


링크 URL




개인정보취급방침
ALLDATASHEET.CO.KR
ALLDATASHEET 가 귀하에 도움이 되셨나요?  [ DONATE ] 

Alldatasheet는?   |   광고문의   |   운영자에게 연락하기   |   개인정보취급방침   |   링크교환   |   제조사별 검색
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