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鍙冩暩(sh霉)璩囨枡
鍨嬭櫉(h脿o)锛� ADA4528-1ARMZ
寤犲晢锛� Analog Devices Inc
鏂囦欢闋�(y猫)鏁�(sh霉)锛� 9/20闋�(y猫)
鏂囦欢澶у皬锛� 0K
鎻忚堪锛� IC OP AMP RRIO ZERODRIFT 8MSOP
瑕栭牷鏂囦欢锛� ADA4528: Lowest Noise, Zero-Drift Amplifier Enabling 24 bit Resolution
妯�(bi膩o)婧�(zh菙n)鍖呰锛� 50
鏀惧ぇ鍣ㄩ鍨嬶細 闆舵紓绉�
闆昏矾鏁�(sh霉)锛� 1
杓稿嚭椤炲瀷锛� 婊挎摵骞�
杞�(zhu菐n)鎻涢€熺巼锛� 0.5 V/µs
澧炵泭甯跺绌嶏細 4MHz
闆绘祦 - 杓稿叆鍋忓锛� 90pA
闆诲 - 杓稿叆鍋忕Щ锛� 0.3µV
闆绘祦 - 闆绘簮锛� 1.5mA
闆绘祦 - 杓稿嚭 / 閫氶亾锛� 40mA
闆诲 - 闆绘簮锛屽柈璺�/闆欒矾(±)锛� 2.2 V ~ 5.5 V锛�±1.1 V ~ 2.75 V
宸ヤ綔婧害锛� -40°C ~ 125°C
瀹夎椤炲瀷锛� 琛ㄩ潰璨艰
灏佽/澶栨锛� 8-TSSOP锛�8-MSOP锛�0.118"锛�3.00mm 瀵級
渚涙噳(y墨ng)鍟嗚ō(sh猫)鍌欏皝瑁濓細 8-MSOP
鍖呰锛� 绠′欢
Data Sheet
ADA4528-1
Rev. A | Page 17 of 20
SOLDER
+
COMPONENT
LEAD
COPPER
TRACE
VSC1
VTS1
TA1
SURFACE-MOUNT
COMPONENT
PC BOARD
TA2
VSC2
VTS2
IF TA1 鈮� TA2, THEN
VTS1 + VSC1 鈮� VTS2 + VSC2
09
43
7-
15
4
PRINTED CIRCUIT BOARD LAYOUT
The ADA4528-1 is a high precision device with ultralow offset
voltage and noise. Therefore, care must be taken in the design of
the printed circuit board (PCB) layout to achieve optimum
performance of the ADA4528-1 at board level.
To avoid leakage currents, keep the surface of the board clean
and free of moisture. Coating the board surface creates a barrier
to moisture accumulation and reduces parasitic resistance on
the board.
Figure 61. Mismatch in Seebeck Voltages Causes
Seebeck Voltage Error
Properly bypassing the power supplies and keeping the supply
traces short minimizes power supply disturbances caused by
output current variation. Connect bypass capacitors as close
as possible to the device supply pins. Stray capacitances are a
concern at the outputs and the inputs of the amplifier. It is
recommended that signal traces be kept at a distance of at
least 5 mm from supply lines to minimize coupling.
To minimize these thermocouple effects, orient resistors so that
heat sources warm both ends equally. Where possible, the input
signal paths should contain matching numbers and types of com-
ponents to match the number and type of thermocouple junctions.
For example, dummy components, such as zero value resistors,
can be used to match the thermoelectric error source (real resistors
in the opposite input path). Place matching components in close
proximity and orient them in the same manner to ensure equal
Seebeck voltages, thus cancelling thermal errors. Additionally,
use leads that are of equal length to keep thermal conduction in
equilibrium. Keep heat sources on the PCB as far away from
amplifier input circuitry as is practical.
A potential source of offset error is the Seebeck voltage on the
circuit board. The Seebeck voltage occurs at the junction of two
dissimilar metals and is a function of the temperature of the
junction. The most common metallic junctions on a circuit board
are solder-to-board trace and solder-to-component lead. Figure 61
shows a cross section of a surface-mount component soldered
to a PCB. A variation in temperature across the board (where TA1 鈮�
TA2) causes a mismatch in the Seebeck voltages at the solder joints,
thereby resulting in thermal voltage errors that degrade the per-
formance of the ultralow offset voltage of the ADA4528-1.
It is highly recommended to use a ground plane. A ground
plane helps distribute heat throughout the board, maintains a
constant temperature across the board, and reduces EMI noise
pickup.
鐩搁棞(gu膩n)PDF璩囨枡
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LTC6102CDD-1#PBF IC AMP CURRENT SENSE 8-DFN
鐩搁棞(gu膩n)浠ｇ悊鍟�/鎶€琛�(sh霉)鍙冩暩(sh霉)
鍙冩暩(sh霉)鎻忚堪
ADA4528-1ARMZ_PROMO 鍒堕€犲晢:Analog Devices 鍔熻兘鎻忚堪:IC OP AMP RRIO ZERODRIFT M
ADA4528-1ARMZ-R7 鍔熻兘鎻忚堪:IC OP AMP RRIO ZERODRIFT 8MSOP RoHS:鏄� 椤炲垾:闆嗘垚闆昏矾 (IC) >> Linear - Amplifiers - Instrumentation 绯诲垪:- 妯�(bi膩o)婧�(zh菙n)鍖呰:1,000 绯诲垪:- 鏀惧ぇ鍣ㄩ鍨�:闆诲鍙嶉 闆昏矾鏁�(sh霉):4 杓稿嚭椤炲瀷:婊挎摵骞� 杞�(zhu菐n)鎻涢€熺巼:33 V/µs 澧炵泭甯跺绌�:20MHz -3db甯跺:30MHz 闆绘祦 - 杓稿叆鍋忓:2nA 闆诲 - 杓稿叆鍋忕Щ:3000µV 闆绘祦 - 闆绘簮:2.5mA 闆绘祦 - 杓稿嚭 / 閫氶亾:30mA 闆诲 - 闆绘簮锛屽柈璺�/闆欒矾(±):4.5 V ~ 16.5 V锛�±2.25 V ~ 8.25 V 宸ヤ綔婧害:-40°C ~ 85°C 瀹夎椤炲瀷:琛ㄩ潰璨艰 灏佽/澶栨:14-SOIC锛�0.154"锛�3.90mm 瀵級 渚涙噳(y墨ng)鍟嗚ō(sh猫)鍌欏皝瑁�:14-SOIC 鍖呰:甯跺嵎 (TR)
ADA4528-1ARMZ-RL 鍔熻兘鎻忚堪:IC OP AMP RRIO ZERODRIFT 8MSOP RoHS:鏄� 椤炲垾:闆嗘垚闆昏矾 (IC) >> Linear - Amplifiers - Instrumentation 绯诲垪:- 妯�(bi膩o)婧�(zh菙n)鍖呰:2,500 绯诲垪:- 鏀惧ぇ鍣ㄩ鍨�:閫氱敤 闆昏矾鏁�(sh霉):1 杓稿嚭椤炲瀷:婊挎摵骞� 杞�(zhu菐n)鎻涢€熺巼:0.11 V/µs 澧炵泭甯跺绌�:350kHz -3db甯跺:- 闆绘祦 - 杓稿叆鍋忓:4nA 闆诲 - 杓稿叆鍋忕Щ:20µV 闆绘祦 - 闆绘簮:260µA 闆绘祦 - 杓稿嚭 / 閫氶亾:20mA 闆诲 - 闆绘簮锛屽柈璺�/闆欒矾(±):2.7 V ~ 36 V锛�±1.35 V ~ 18 V 宸ヤ綔婧害:-40°C ~ 85°C 瀹夎椤炲瀷:琛ㄩ潰璨艰 灏佽/澶栨:8-SOIC锛�0.154"锛�3.90mm 瀵級 渚涙噳(y墨ng)鍟嗚ō(sh猫)鍌欏皝瑁�:8-SO 鍖呰:甯跺嵎 (TR)
ADA4528-2ACPZ-R7 鍒堕€犲晢:Analog Devices 鍔熻兘鎻忚堪:SP Amp Zero Drift Amplifier Dual R-R I/O 卤2.75V/5.5V 8-Pin LFCSP EP T/R 鍒堕€犲晢:Analog Devices 鍔熻兘鎻忚堪:LOW NOISE RRIO ZERO DRIFT DUAL OPAMP - Tape and Reel 鍒堕€犲晢:Analog Devices Inc. 鍔熻兘鎻忚堪:Precision Amplifiers Low Noise RRIO Zero Drift Dual OpAmp
ADA4528-2ACPZ-RL 鍒堕€犲晢:Analog Devices 鍔熻兘鎻忚堪:SP Amp Zero Drift Amplifier Dual R-R I/O 卤2.75V/5.5V 8-Pin LFCSP EP T/R 鍒堕€犲晢:Analog Devices 鍔熻兘鎻忚堪:LOW NOISE RRIO ZERO DRIFT DUAL OPAMP - Tape and Reel 鍒堕€犲晢:Analog Devices 鍔熻兘鎻忚堪:IC OPAMP GP RRIO 4MHZ ZD 8LFCSP 鍒堕€犲晢:Analog Devices Inc. 鍔熻兘鎻忚堪:Precision Amplifiers Low Noise RRIO Zero Drift Dual OpAmp
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