AD628: High Common-Mode Voltage, Programmable Gain Difference Amplifier
The AD628 is a precision difference amplifier that combines excellent dc performance with high common-mode rejection over a wide range of frequencies. When used to scale high voltages, it allows ...More
AD628: High Common-Mode Voltage, Programmable Gain Difference Amplifier
Product Description
The AD628 is a precision difference amplifier that combines excellent dc performance with high common-mode rejection over a wide range of frequencies. When used to scale high voltages, it allows simple conversion of standard control voltages or currents for use with single-supply ADCs. A wideband feedback loop minimizes distortion effects due to capacitor charging of Σ-Δ ADCs.
A reference pin (VREF) provides a dc offset for converting bipolar to single-sided signals. The AD628 converts +5 V, +10 V, ±5 V, ±10 V, and 4 to 20 mA input signals to a single-ended output within the input range of single-supply ADCs.
The AD628 has an input common mode and differential mode operating range of ±120 V. The high common mode, input impedance makes the device well suited for high voltage measurements across a shunt resistor. The inverting input of the buffer amplifier is available for making a remote Kelvin connection.
A precision 10 kΩ resistor connected to an external pin is provided for either a low-pass filter or to attenuate large differential input signals. A single capacitor implements a low-pass filter. The AD628 operates from single and dual supplies and is available in an 8-lead SOIC_N or an 8-lead MSOP. It operates over the standard industrial temperature range of −40°C to +85°C.
Applications
Data Sheet, Rev. G, 4/07
Features
- High common-mode input voltage range
±120 V at VS = ±15 V - Gain range 0.1 to 100
- Operating temperature range: −40°C to +85°C
- Supply voltage range
Dual supply: ±2.25 V to ±18 V
Single supply: 4.5 V to 36 V
- Excellent ac and dc performance
- Offset temperature stability RTI: 10 μV/°C maximum
- Offset: ±1.5 V mV maximum
- CMRR RTI: 75 dB minimum, dc to 500 Hz,
G = +1
Diagrams
- Enlarge
- Другие диаграммы
- Обозначения и трафареты для печатной платы
Functional Block Diagram for AD628
High Common-Mode Voltage, Programmable Gain Difference Amplifier
Другие диаграммы для AD628
High Common-Mode Voltage, Programmable Gain Difference Amplifier
AD628 Pin Configuration
Functional Block Diagram for AD628
Характеристики
| Single/Dual Supply | Single/Dual |
| Voltage Supply (Vmax) | ±18V |
| Gain Setting Method | Pin,Resistor |
| Gain Range (min to max) | 100 |
| Bandwidth G=10 (kHz typ) | 600kHz |
| CMRR (dB) | 77dB |
| Vnoise RTI 1-10 Hz µVp-p | 15µV p-p |
| Temperature Range | -40 to +85 |
| Gain Error (%) max | +0.01% |
| Supply Current (max) | 1.6mA |
| Package | SOIC |
| Vosi (µV) | 1500µV |
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| Part# | Description | Single/Dual Supply | Vcc-Vee | Gain Setting Method | Bandwidth G=10 (kHz typ) | Gain min. | Gain max. | Min CMRR @ 60 Hz Min Gain | Min CMRR @ 60Hz Max Gain | Vnoise RTI 1-10 Hz µVp-p | Price* (1000-4999) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| AD522 | Diff Amp | Dual | 10V to 36V | Resistor | 3 | 1 | 1,000 | 75dB | 100dB | 4 | - |
| AD524 | Precision IA | Dual | 12V to 36V | Pin | 400 | 1 | 1,000 | 70dB | 110dB | 0.3 | $9.52 |
| AD526 | Software Programmable | Dual | 9V to 33V | Software | 350 | 1 | 16 | - | - | 3 | $6.39 |
| AD620 | General Purpose IA | Dual | 4.6V to 36V | Resistor | 800 | 1 | 10,000 | 73dB | 110dB | 0.28 | $3.18 |
| AD621 | Precision IA | Dual | 4.6V to 18V | Pin | 800 | 10 | 100 | 93dB | 110dB | 0.28 | $4.09 |
| AD622 | Low Cost IA | Dual | 5.2V to 36V | Resistor | 800 | 1 | 1,000 | 66dB | 103dB | 0.3 | $2.51 |
| AD623 | S.S R-R IA | Single/Dual | 2.7V to 12V | Resistor | 100 | 1 | 1,000 | 70dB | 105dB | 2 | $1.40 |
| AD624 | Precision IA | Dual | 12V to 36V | Pin | 400 | 1 | 1,000 | 70dB | 110dB | 0.3 | $11.93 |
| AD625 | Programmable Gain IA | Dual | 12V to 36V | Resistor | 400 | 1 | 10,000 | 70dB | 110dB | 0.3 | $8.78 |
| AD626 | Diff Amp | Single/Dual | 2.4V to 12V | Pin | 100 | 10 | 100 | 55dB | 55dB | 2 | $3.70 |
| AD627 | Micropower IA | Single/Dual | 2.2V to 36V | Resistor | 30 | 5 | 1,000 | 77dB | 77dB | 1.2 | $2.56 |
| AD628 | High CMV DA | Single/Dual | 4.5V to 36V | Pin, Resistor | 600 | 0.1 | 100 | 75dB | 75dB | 15 | $1.78 |
| AD629 | High CMV DA | Dual | 5V to 36V | fixed | 500 | - | - | 77dB | 77dB | 15 | $2.84 |
| AD8129 | Low Cost Diff Amp | Single/Dual | 4.5V to 25V | Resistor | 200000 | 10 | - | 94dB | - | - | $1.57 |
| AD8202 | High CMV DA | Single | 3.5V to 12V | fixed | 50 | - | - | 82dB | 82dB | 10 | $1.51 |
| AD8203 | High CMV DA | Single | 4.5V to 5.5V | fixed | 60 | - | - | 82dB | 82dB | 10 | $1.37 |
| AD8205 | S.S Diff Amp | Single | 4.5V to 5.5V | fixed | 50 | - | - | 78dB | 78dB | 20 | $1.51 |
| AD8206 | S.S Diff Amp | Single | 4.5V to 5.5V | fixed | 100 | - | - | 76dB | 76dB | 20 | $1.37 |
| AD8210 | Bi-Directional Shunt Mon | Single | 4.5V to 5.5V | fixed | 500 | 20 | 20 | 100dB | 100dB | 7 | $1.81 |
| AD8211 | High CMV Shunt Mon | Single | 4.5V to 5.5V | fixed | 500 | 20 | 20 | 100dB | 100dB | 7 | $0.81 |
| AD8212 | High CMV Shunt Mon | Single | 7V to 65V | Resistor | 1000 | 1 | 1,000 | 100dB | 100dB | 1.1 | $0.93 |
| AD8213 | Dual High CMV Shunt Mon | Single | 4.5V to 5.5V | fixed | 500 | 20 | 20 | 100dB | 100dB | 7 | $2.01 |
| AD8214 | High CMV Threshold Detec | Single | 5V to 65V | Resistor | - | 1 | 100 | 80dB | 80dB | 2.2 | $0.76 |
| AD8215 | High CMV Shunt Mon | Single | 4.5V to 5.5V | fixed | 450 | 20 | 20 | 100dB | 100dB | 7 | $1.21 |
| AD8216 | High BW 65 V Diff Amp | Single | 4.5V to 5.5V | fixed | 3000 | 3 | 3 | 80dB | 80dB | 20 | $1.62 |
| AD8220 | R-R JFET IA | Single/Dual | 4.6V to 36V | Resistor | 800 | 1 | 1,000 | 78dB | 94dB | 0.8 | $2.32 |
| AD8221 | High Performance IA | Dual | 4.6V to 36V | Resistor | 562 | 1 | 1,000 | 80dB | 130dB | 0.25 | $2.01 |
| AD8222 | Dual High Performance IA | Dual | - to - | Resistor | 750 | 1 | 10,000 | 80dB | 130dB | 0.25 | $3.63 |
| AD8223 | S.S R-R IA | Single/Dual | 3V to 25V | Pin | 200 | 5 | 1,000 | 70dB | 105dB | 2 | - |
| AD8224 | Dual JFET R-R IA | Single/Dual | 4.6V to 36V | Resistor | 800 | 1 | 1,000 | 78dB | 94dB | 0.8 | $4.17 |
| AD8225 | Fixed G=5 IA | Dual | 3.4V to 36V | fixed | 900 | - | - | 86dB | 86dB | 1.5 | $3.29 |
| AD8228 | Precision IA | Dual | 4.6V to 36V | Pin | 650 | 10 | 100 | 100dB | 120dB | 0.5 | $3.03 |
| AD8230 | Zero Drift IA | Single/Dual | 8V to 16V | Resistor | 2 | 2 | 1,000 | - | 110dB | 3 | $2.99 |
| AD8231 | Zero Drift Software Prog | Single | 3V to 6V | Pin, Software | 700 | 1 | 128 | 80dB | 110dB | 0.7 | $1.71 |
| AD8250 | Software Programmable | Dual | 10V to 34V | Pin, Software | 3000 | 1 | 10 | 80dB | 98dB | 1 | $5.01 |
| AD8251 | Software Programmable | Dual | 10V to 34V | Pin, Software | 2500 | 1 | 8 | 80dB | 98dB | 1.2 | $5.01 |
| AD8253 | Software Programmable | Dual | 10V to 34V | Pin, Software | 10000 | 1 | 1,000 | 80dB | 120dB | 1 | $4.95 |
| AD8270 | Dual Diff Amp | Dual | 5V to 36V | Pin | 10000 | 0.5 | 2 | 70dB | 80dB | 1 | $1.89 |
| AD8273 | Dual Audio Diff Amp | Dual | 5V to 36V | Pin | 20000 | 0.5 | 2 | 77dB | - | 2 | $1.67 |
| AD8290 | Sensor Amp | - | 2.6V to 5.5V | fixed | - | 50 | 50 | - | - | 0.75 | $1.52 |
| AD8553 | Zero Drift IA | Single | 1.8V to 5.5V | Resistor | 1 | 0.1 | 10,000 | 80dB | 120dB | 0.7 | $1.32 |
| AD8555 | Sensor Amp | Single | 5.5V to 2.7V | Software | n/a | 70 | 1,280 | 80dB | 96dB | 0.5 | $3.12 |
| AD8556 | Sen/Filter Amp | Single | 2.7V to 5.5V | Software | n/a | 70 | 1,280 | 80dB | 94dB | 0.5 | $2.88 |
| AD8557 | Sensor Amp | Single | 2.7V to 5.5V | Software | - | 28 | 1,300 | 75dB | 86dB | - | $2.13 |
| AMP03 | Precision Diff Amp | Dual | 12V to 36V | fixed | 3000 | - | - | 85dB | 85dB | 2 | $2.81 |
* The pricing listed here is provided only for budgetary purposes as recommended list price in U.S.
Dollars in the United States ex factor per unit for the stated volume. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
** Pricing is currently unavailable. Click on the product number to see the Product Page for additional information.
AD628 Model Options
Help
- "Pre-Release": модель микросхемы еще не запущена в серийное производство, однако можно получить образцы.
- Производство: модель производится, доступна для покупки и заказа образцов.
- Завершение продаж: запланировано снятие модели микросхемы с производства, но в течение некоторого ограниченного времени покупка еще возможна.
- Снято с производства: Микросхема снята с производства и не доступна для приобретения. Другие варианты, указанные в таблице, все еще производятся (если их статус любой, кроме "снято с производства")
Для более подробного описания корпуса и материалов - см. Package Site
- Коммерческое исполнение: 0…70°С
- Военное исполнение: от -55 до +125 градусов по Цельсию
- Индустриальное исполнение: диапазоны рабочих температур могут быть разные у разных моделей. См. техническое описание (datasheet)
- Automotive: -40 to +125 °С
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*Приведенные цены действительны в США и указаны только для примерного бюджетного рассчета. Цены указаны в долларах США (за штуку в указанном размере партии) и могут быть изменены. Цены в других регионах могут отличаться в зависимости от местных пошлин, налогов, сборов и курсов валют. Для уточнения стоимости обращайтесь в местные офисы продаж Analog Devices, или к официальным дистрибьюторам. Цены на оценочные платы и наборы указаны за штуку независимо от количества.
**Sample availability may be better than production availability. Please enter samples into your cart to check sample availability.


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