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參數資料
| 型號： | ADA4528-1ARMZ |
| 廠商： | Analog Devices Inc |
| 文件頁數： | 9/20頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC OP AMP RRIO ZERODRIFT 8MSOP |
| 視頻文件： | ADA4528: Lowest Noise, Zero-Drift Amplifier Enabling 24 bit Resolution |
| 標準包裝： | 50 |
| 放大器類型： | 零漂移 |
| 電路數： | 1 |
| 輸出類型： | 滿擺幅 |
| 轉換速率： | 0.5 V/µs |
| 增益帶寬積： | 4MHz |
| 電流 - 輸入偏壓： | 90pA |
| 電壓 - 輸入偏移： | 0.3µV |
| 電流 - 電源： | 1.5mA |
| 電流 - 輸出 / 通道： | 40mA |
| 電壓 - 電源，單路/雙路(±)： | 2.2 V ~ 5.5 V，±1.1 V ~ 2.75 V |
| 工作溫度： | -40°C ~ 125°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 8-TSSOP，8-MSOP（0.118"，3.00mm 寬） |
| 供應商設備封裝： | 8-MSOP |
| 包裝： | 管件 |
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 ≠ TA2, THEN
VTS1 + VSC1 ≠ 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 ≠
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.
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相關代理商/技術參數 |
參數描述 |
|---|---|
| ADA4528-1ARMZ_PROMO | 制造商:Analog Devices 功能描述:IC OP AMP RRIO ZERODRIFT M |
| ADA4528-1ARMZ-R7 | 功能描述:IC OP AMP RRIO ZERODRIFT 8MSOP RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標準包裝:1,000 系列:- 放大器類型:電壓反饋 電路數:4 輸出類型:滿擺幅 轉換速率:33 V/µs 增益帶寬積:20MHz -3db帶寬:30MHz 電流 - 輸入偏壓:2nA 電壓 - 輸入偏移:3000µV 電流 - 電源:2.5mA 電流 - 輸出 / 通道:30mA 電壓 - 電源，單路/雙路(±):4.5 V ~ 16.5 V，±2.25 V ~ 8.25 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:14-SOIC（0.154"，3.90mm 寬） 供應商設備封裝:14-SOIC 包裝:帶卷 (TR) |
| ADA4528-1ARMZ-RL | 功能描述:IC OP AMP RRIO ZERODRIFT 8MSOP RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標準包裝:2,500 系列:- 放大器類型:通用 電路數:1 輸出類型:滿擺幅 轉換速率:0.11 V/µs 增益帶寬積:350kHz -3db帶寬:- 電流 - 輸入偏壓:4nA 電壓 - 輸入偏移:20µV 電流 - 電源:260µA 電流 - 輸出 / 通道:20mA 電壓 - 電源，單路/雙路(±):2.7 V ~ 36 V，±1.35 V ~ 18 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 供應商設備封裝:8-SO 包裝:帶卷 (TR) |
| ADA4528-2ACPZ-R7 | 制造商:Analog Devices 功能描述:SP Amp Zero Drift Amplifier Dual R-R I/O ±2.75V/5.5V 8-Pin LFCSP EP T/R 制造商:Analog Devices 功能描述:LOW NOISE RRIO ZERO DRIFT DUAL OPAMP - Tape and Reel 制造商:Analog Devices Inc. 功能描述:Precision Amplifiers Low Noise RRIO Zero Drift Dual OpAmp |
| ADA4528-2ACPZ-RL | 制造商:Analog Devices 功能描述:SP Amp Zero Drift Amplifier Dual R-R I/O ±2.75V/5.5V 8-Pin LFCSP EP T/R 制造商:Analog Devices 功能描述:LOW NOISE RRIO ZERO DRIFT DUAL OPAMP - Tape and Reel 制造商:Analog Devices 功能描述:IC OPAMP GP RRIO 4MHZ ZD 8LFCSP 制造商:Analog Devices Inc. 功能描述:Precision Amplifiers Low Noise RRIO Zero Drift Dual OpAmp |
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