仪表放大器
ADI公司的仪表放大器是精密增益模块，输入为差分式，输出可以是差分式，也可以是相对于参考端的单端式。这些器件能够放大两个输入信号电压之间的差值，同时抑制两个输入端共有的任何信号。仪表放大器广泛用于许多工业、测量、数据采集和医疗应用，这些应用要求在高噪声环境下保持直流精度和增益精度，而且其中存在大共模信号（通常为交流电力线频率）。
产品选型表
仪表放大器钻石图工具
钻石图工具是一个网络应用程序，可生成特定配置的输出电压范围与输入共模电压关系图，也被称为钻石图，适用于ADI仪表放大器。 根据电源电压、增益和输入信号范围等用户输入参数，该工具可检测设计饱和情况，推荐合适的仪表放大器使输入信号在规格范围内并且配置的电路是有效的。 该工具能避免设计饱和，找到适合设计的最佳仪表放大器，节省设计时间。
技术文章
- 微功耗IC免除心率监护仪的后顾之忧
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- 预测并追求您的极限！
- CareFusion与ADI之间的探讨：优化EEG放大器的性能并降低
- 简单分立式单端转差分精密仪表放大器电路：具有高共模输入范围，节省50%功耗
- MS-2317：用低噪声仪表放大器设计高性能 系统 PDF
- Part 2: Simplifying Design of Industrial Process-Control Systems with PLC Evaluation Boards
- Part 1: Simplifying Design of Industrial Process-Control Systems with PLC Evaluation Boards
- High-performance Adder Uses Instrumentation Amplifiers
- Medical Devices Get A Prescription For Wafer-Level Chip-Scale Packaging
- Two Instrumentation Amps Make Accurate Voltage-to-Current Source
解决方案通报和手册
技术指南
- MT-226：工程经理初次使用Multisim PDF
- MT-070：仪表放大器输入RFI保护 PDF
- MT-069：仪表放大器输入过压保护 PDF
- MT-067：自稳零仪表放大器 PDF
- MT-066: 仪表放大器桥接电路误差预算分析 PDF
- MT-065: 仪表放大器噪声 PDF
- MT-064: 仪表放大器直流误差源 PDF
- MT-063: 三运算放大器仪表放大器基本结构 PDF
- MT-062: 双运放仪表放大器基本配置 PDF
- MT-061: 仪表放大器基础 PDF
设计手册
用户手册
- UG-513: Evaluating the AD8237 Micropower, Zero Drift, True Rail-to-Rail Instrumentation Amplifier and the AD8420 Wide Supply Range, Micropower, Rail-to-Rail Instrumentation Amplifier PDF
- UG-311: Reliability Handbook PDF
- UG-261：针对AD62x、AD822x和AD842x系列的评估板 PDF
- UG-181: PLC Demo System, Industrial Process Control Demo System (Rev. A) PDF
仪表放大器
| SortOrder | Part# | # of Amps | Vos (max) (V) | Vos TC (max) (V/°C) | Gain Set | Gain (min) (V/V) | Gain (max) (V/V) | BW - low gain (typ) (Hz) | Ibias (max) (A) | Iq/Amp (max) (A) | Vs span (min) (V) | Vs span (max) (V) | Input Voltage Noise (typ) (V/rtHz) | Price (1000+) ($ US) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | ADA4558 | 2 | 20µ | 10n | Digital | 2.94 | 971.1 | - | - | 8.2m | 6 | 18 | - | $3.35 (ADA4558WHCPZ-R7) |
| 2 | AD8233 | 1 | 6m | - | Resistor | 100 | 1100 | 1k | 200p | 70µ | 1.7 | 3.5 | 150n | $1.49 (AD8233ACBZ-R7) |
| 3 | AD8229S | 1 | - | - | Resistor | 1 | 1000 | - | - | - | - | - | - | - |
| 4 | AD8422 | 1 | 25µ | 300n | Resistor | 1 | 1000 | 2.2M | 500p | 300µ | 4.6 | 36 | 8n | $2.10 (AD8422ARMZ) |
| 5 | AD8232 | - | - | - | - | 100 | 100 | - | 200p | - | 2 | 3.5 | 100n | $1.36 (AD8232ACPZ-R7) |
| 6 | AD8237 | 1 | 75µ | 300n | Resistor | 1 | 1000 | 200k | 650p | 130µ | 1.8 | 5.5 | 68n | $0.93 (AD8237ARMZ) |
| 7 | AD8421 | 1 | 25µ | 200n | Resistor | 1 | 1000 | 10M | 1n | 2.3m | 5 | 36 | 3n | $2.35 (AD8421ARMZ) |
| 8 | AD8420 | 1 | 150µ | 1µ | Resistor | 1 | 1000 | 250k | 27n | 100µ | 2.7 | 36 | 55n | $0.89 (AD8420ARMZ) |
| 9 | AD8428 | 1 | 25µ | 300n | Fixed Gain | 2000 | 2000 | 3.5M | 50n | 6.8m | 8 | 36 | 1.3n | $6.60 (AD8428ARZ) |
| 10 | AD8426 | 2 | 100µ | 1µ | Resistor | 1 | 1000 | 1.5M | 30n | 425µ | 2.2 | 36 | 24n | $2.20 (AD8426ACPZ-R7) |
| 11 | AD8429 | 1 | 50µ | 300n | Resistor | 1 | 10000 | 15M | 150n | 7m | 8 | 36 | 1n | $3.50 (AD8429ARZ) |
| 12 | AD8229 | 1 | 100µ | 1µ | Resistor | 1 | 1000 | 15M | 70n | 7m | 8 | 34 | 1n | $150.00 (AD8229HRZ) |
| 13 | AD8235 | 1 | 2.5m | 700n | Resistor | 5 | 200 | 23k | 50p | 40µ | 1.8 | 5.5 | 76n | $1.59 (AD8235ACBZ-P7) |
| 14 | AD8236 | 1 | 3.5m | 2.5µ | Resistor | 5 | 200 | 23k | 10p | 40µ | 1.8 | 5.5 | 76n | $0.99 (AD8236ARMZ) |
| 15 | AD8227 | 1 | 100µ | 1µ | Resistor | 5 | 1000 | 250k | 27n | 425µ | 2.2 | 36 | 24n | $1.04 (AD8227ARMZ) |
| 16 | AD8226 | 1 | 50µ | 1µ | Resistor | 1 | 1000 | 1.5M | 27n | 425µ | 2.2 | 36 | 22n | $1.10 (AD8226ARMZ) |
| 17 | AD8295 | 1 | 60µ | 300n | Resistor | 1 | 1000 | 1.2M | 800p | 2.3m | 4.6 | 36 | 8n | $2.89 (AD8295ACPZ-R7) |
| 18 | AD8223 | 1 | 100µ | 1µ | Resistor | 5 | 1000 | 125k | 25n | 500µ | 3 | 24 | 30n | $1.05 (AD8223ARZ) |
| 19 | AD8293G80 | 1 | 50µ | 300n | Fixed Gain | 80 | 80 | 500k | 2n | 1.3m | 1.8 | 5.5 | 35n | $0.50 (AD8293G80ARJZ-R7) |
| 20 | AD8293G160 | 1 | 50µ | 300n | Fixed Gain | 160 | 160 | 500k | 2n | 1.3m | 1.8 | 5.5 | 35n | $0.50 (AD8293G160ARJZ-R7) |
| 21 | AD8253 | 1 | 1.05m | 6.2µ | Digital | 1 | 1000 | 10M | 50n | 5.3m | 10 | 30 | 10n | $4.95 (AD8253ARMZ) |
| 22 | AD8228 | 1 | 50µ | 800n | Pin Strap | 10 | 100 | 650k | 600p | 1m | 4.6 | 36 | 8n | $3.03 (AD8228ARMZ) |
| 23 | AD8557 | 1 | 12µ | 65n | Digital | 28 | 1300 | 600k | 25n | - | 2.7 | 5.5 | 32n | $2.19 (AD8557ARZ) |
| 24 | AD8290 | 1 | 935m | 300µ | Fixed Gain | 50 | 50 | 250 | 1n | 1.8m | 2.6 | 5.5 | - | $1.52 (AD8290ACPZ-R7) |
| 25 | AD8251 | 1 | 800µ | 6.2µ | Digital | 1 | 8 | 10M | 30n | 4.5m | 10 | 34 | 18n | $5.01 (AD8251ARMZ) |
| 26 | AD8231 | 1 | 15µ | 50n | Digital | 1 | 128 | 2.7M | 500p | 5m | 3 | 6 | 32n | $1.71 (AD8231ACPZ-R7) |
| 27 | AD8213 | 2 | 2.2m | 12µ | Fixed Gain | 20 | 20 | 500k | - | 4.5m | 4.5 | 5.5 | 70n | $2.01 (AD8213YRMZ) |
| 28 | AD8250 | 1 | 800µ | 6.2µ | Digital | 1 | 10 | 10M | 30n | 4.5m | 10 | 30 | 18n | $5.01 (AD8250ARMZ) |
| 29 | AD8224 | 2 | 175µ | 5µ | Resistor | 1 | 1000 | 1.5M | 10p | 800µ | 4.5 | 36 | 14n | $4.17 (AD8224ACPZ-R7) |
| 30 | AD8222 | 2 | 60µ | 300n | Resistor | 1 | 10000 | 1.2M | 1n | 1.1m | 4.6 | 36 | 8n | $3.73 (AD8222HACPZ-R7) |
| 31 | AD8220 | 1 | 125µ | 5µ | Resistor | 1 | 1000 | 1.5M | 25p | 750µ | 4.5 | 36 | 14n | $2.55 (AD8220ARMZ) |
| 32 | AD8553 | 1 | 375µ | 3µ | Resistor | 1 | 1000 | 1k | 1n | 1.2m | 1.8 | 5.5 | 30n | $1.32 (AD8553ARMZ) |
| 33 | AD8556 | 1 | 12µ | 65n | Digital | 70 | 1280 | 280k | 54n | 2.7m | 5 | 5.5 | 32n | $2.97 (AD8556ARZ) |
| 34 | AD8230 | 1 | 10µ | 50n | Resistor | 2 | 1000 | 2k | 1n | 4m | 8 | 16 | 240n | $2.99 (AD8230YRZ) |
| 35 | LTC6915 | 1 | 10µ | 50n | Digital | 1 | 4096 | 200k | 10n | 1.6m | 2.7 | 11 | 50n | $2.44 (LTC6915CDE#PBF) |
| 36 | AD8221 | 1 | 25µ | 300n | Resistor | 1 | 1000 | 825k | 400p | 1m | 4.6 | 36 | 8n | $2.21 (AD8221ARMZ) |
| 37 | LTC6800 | 1 | 100µ | 250n | Resistor | 1 | - | 200k | 10n | 1.2m | 2.7 | 5.5 | 50n | $1.55 (LTC6800HMS8#PBF) |
| 38 | AD8225 | 1 | 150µ | 2µ | Fixed Gain | 5 | 5 | 900k | 1.2n | 1.2m | 3.4 | 36 | 45n | $3.36 (AD8225ARZ) |
| 39 | LT1789-10 | 1 | 3m | 700n | Resistor | 10 | 1000 | 60k | 40n | 95µ | 2.2 | 36 | 48n | $3.20 (LT1789CS8-10#PBF) |
| 40 | LT1789-1 | 1 | 750µ | 700n | Resistor | 1 | 1000 | 60k | 40n | 95µ | 2.2 | 36 | 48n | $3.20 (LT1789CS8-1#PBF) |
| 41 | LTC2053-SYNC | 1 | 10µ | 50n | Resistor | 1 | - | 200k | 10n | 1.3m | 2.7 | 11 | 50n | $3.90 (LTC2053IMS8-SYNC#PBF) |
| 42 | LTC2053 | 1 | 10µ | 50n | Resistor | 1 | - | 200k | 10n | 1.3m | 2.7 | 11 | 50n | $3.20 (LTC2053CMS8#PBF) |
| 43 | LT1168 | 1 | 40µ | 300n | Resistor | 1 | 10000 | 400k | 250p | 530µ | 4.6 | 40 | 10n | $3.70 (LT1168CN8#PBF) |
| 44 | LT1920 | 1 | 125µ | 1µ | Resistor | 1 | 10000 | 800k | 2n | 1.3m | 4.6 | 40 | 7.5n | $3.05 (LT1920CN8#PBF) |
| 45 | AD627 | 1 | 125µ | 1µ | Resistor | 5 | 1000 | 80k | 10n | 85µ | 2.2 | 36 | 38n | $2.87 (AD627ARZ) |
| 46 | LT1167-1 | 1 | 40µ | 300n | Resistor | 1 | 10000 | 1M | 350p | 1.3m | 4.6 | 40 | 7.5n | $3.20 (LT1167CS8-1#PBF) |
| 47 | LT1167 | 1 | 40µ | 300n | Resistor | 1 | 10000 | 1M | 350p | 1.3m | 4.6 | 40 | 7.5n | $3.20 (LT1167CN8#PBF) |
| 48 | AD623 | 1 | 100µ | 1µ | Resistor | 1 | 1000 | 800k | 25n | 550µ | 2.7 | 12 | 35n | $1.60 (AD623ARMZ) |
| 49 | AD622 | 1 | 125µ | 1µ | Resistor | 1 | 1000 | 1M | 5n | 1.3m | 5.2 | 36 | 12n | $2.94 (AD622ARZ) |
| 50 | AMP04 | 1 | 400µ | 3µ | Resistor | 1 | 1000 | 700k | 30n | 900µ | 5 | 36 | 270n | $5.60 (AMP04FSZ) |
| 51 | AD621 | 1 | 125µ | 1.5µ | Pin Strap | 10 | 100 | 800k | 1n | 1.3m | 4.6 | 36 | 9n | $4.56 (AD621ARZ) |
| 52 | AD620 | 1 | 50µ | 600n | Resistor | 1 | 10000 | 1M | 1n | 1.3m | 4.6 | 36 | 9n | $3.72 (AD620ARZ) |
| 53 | LT1102 | 1 | 600µ | 8µ | Fixed Gain | 10 | 100 | 35M | 40p | 5m | 18 | 40 | 19n | $4.75 (LT1102CN8#PBF) |
| 54 | LTC1100 | 1 | 10µ | 100n | Fixed Gain | 10 | 100 | 1.8M | 50p | 2.8m | 4 | 18 | 35n | $6.15 (LTC1100CN8#PBF) |
| 55 | AMP02 | 1 | 100µ | 2µ | Resistor | 1 | 10000 | 1.2M | 10p | 6m | 9 | 36 | 9n | $6.16 (AMP02FSZ) |
| 56 | LT1101 | 1 | 160µ | 2µ | Fixed Gain | 10 | 100 | 370k | 8n | 130µ | 2.3 | 44 | 43n | $4.75 (LT1101CN8#PBF) |
| 57 | AD526 | - | 500µ | 3µ | - | 1 | 16 | 350k | - | - | 9 | 33 | 30n | $8.67 (AD526JNZ) |
| 58 | AD625 | 1 | 25µ | 250n | Resistor | 1 | 10000 | 650k | 15n | 5m | 12 | 36 | 4n | $11.90 (AD625JNZ) |
| 59 | AMP01 | 1 | 100µ | 1µ | Resistor | 0.1 | 10000 | 570k | 4n | 4.8m | 9 | 36 | 5n | $10.44 (AMP01GSZ) |
| 60 | AD624 | 1 | 25µ | 250n | Pin Strap | 1 | 1000 | 1M | 50n | 5m | 12 | 36 | 4n | $24.31 (AD624ADZ) |
| 61 | AD524 | 1 | 50µ | 500n | Pin Strap | 1 | 1000 | 1M | 15n | 5m | 12 | 36 | 7n | $10.47 (AD524ARZ-16) |
| 62 | AD522 | - | 200µ | 25µ | - | - | - | 30k | - | - | 10 | 36 | 15µ | $584.60 (AD522SD/883B) |
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