AD210AN

AD210 AD | Alldatasheet

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Tel: 617/329-4700 Fax: 617/326-8703 FUNCTIONAL BLOCK DIAGRAM INPUT POWER SUPPLY VO 30 29 T2 POWER POWER OSCILLATOR INPUT OUTPUT MOD DEMOD FILTER OUTPUT POWER SUPPLY O COM +VOSS –VOSS AD210 PWR COMPWR –VISS +VISS ICOM +IN –IN FB a Precision, Wide Bandwidth 3-Port Isolation Amplifier AD210*

FEATURES

High CMV Isolation: 2500 V rms Continuous

63500 V Peak Continuous

Small Size: 1.00" 3 2.10" 3 0.350" Three-Port Isolation: Input, Output, and Power Low Nonlinearity: 60.012% max Wide Bandwidth: 20 kHz Full-Power (–3 dB) Low Gain Drift: 625 ppm/ 8C max High CMR: 120 dB (G = 100 V/V) Isolated Power: 615 V @ 65m A Uncommitted Input Amplifier

APPLICATIONS

Multichannel Data Acquisition High Voltage Instrumentation Amplifier Current Shunt Measurements Process Signal Isolation GENERAL DESCRIPTION The AD210 is the latest member of a new generation of low cost, high performance isolation amplifiers. This three-port, wide bandwidth isolation amplifier is manufactured with sur- face-mounted components in an automated assembly process. The AD210 combines design expertise with state-of-the-art manufacturing technology to produce an extremely compact and economical isolator whose performance and abundant user features far exceed those offered in more expensive devices. The AD210 provides a complete isolation function with both signal and power isolation supplied via transformer coupling in- ternal to the module. The AD210’s functionally complete de- sign, powered by a single +15 V supply, eliminates the need for an external DC/DC converter, unlike optically coupled isolation devices. The true three-port design structure permits the AD210 to be applied as an input or output isolator, in single or multichannel applications. The AD210 will maintain its high performance under sustained common-mode stress. Providing high accuracy and complete galvanic isolation, the AD210 interrupts ground loops and leakage paths, and rejects common-mode voltage and noise that may other vise degrade measurement accuracy. In addition, the AD210 provides pro- tection from fault conditions that may cause damage to other sections of a measurement system. PRODUCT HIGHLIGHTS The AD210 is a full-featured isolator providing numerous user benefits including: High Common-Mode Performance: The AD210 provides

2500 V rms (Continuous) and ± 3500 V peak (Continuous) common-

mode voltage isolation between any two ports. Low input capacitance of 5 pF results in a 120 dB CMR at a gain of 100, and a low leakage current (2 µA rms max @ 240 V rms, 60 Hz). High Accuracy: With maximum nonlinearity of ± 0.012% (B Grade), gain drift of ± 25 ppm/°C max and input offset drift of (± 10 ± 30/G) µV/°C, the AD210 assures signal integrity while providing high level isolation. Wide Bandwidth: The AD210’s full-power bandwidth of 20 kHz makes it useful for wideband signals. It is also effective in applications like control loops, where limited bandwidth could result in instability. Small Size: The AD210 provides a complete isolation function in a small DIP package just 1.00" × 2.10" × 0.350". The low profile DIP package allows application in 0.5" card racks and assemblies. The pinout is optimized to facilitate board layout while maintaining isolation spacing between ports. Three-Port Design: The AD210’s three-port design structure allows each port (Input, Output, and Power) to remain inde- pendent. This three-port design permits the AD210 to be used as an input or output isolator. It also provides additional system protection should a fault occur in the power source. Isolated Power: ± 15 V @ 5 mA is available at the input and output sections of the isolator. This feature permits the AD210 to excite floating signal conditioners, front-end amplifiers and remote transducers at the input as well as other circuitry at the output. Flexible Input: An uncommitted operational amplifier is pro- vided at the input. This amplifier provides buffering and gain as required and facilitates many alternative input functions as required by the user. Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. REV. A *Covered by U.S. Patent No. 4,703,283.

1 V O Output

3+ V OSS +Isolated Power @ Output 4– V OSS –Isolated Power @ Output 14 +V ISS +Isolated Power @ Input 15 –V ISS –Isolated Power @ Input

16 FB Input Feedback

17 –IN –Input

18 I COM Input Common

29 Pwr Com Power Common

30 Pwr Power Input

AD210–SPECIFICATIONS(typical @ +258C, and VS = +15 V unless otherwise noted) Model AD210AN AD210BN AD210JN GAIN Range 1 V/V – 100 V/V * * Error ± 2% max ± 1% max * vs. Temperature(0 °C to +70°C) +25 ppm/ °C max * * (–25°C to +85°C) ± 50 ppm/°C max * * vs. Supply Voltage ± 0.002%/V * * Nonlinearity 1 ± 0.025% max ± 0.012% max * INPUT VOLTAGE RATINGS Linear Differential Range ± 10 V * * Maximum Safe Differential Input ± 15 V * * Max. CMV Input-to-Output * ac, 60 Hz, Continuous 2500 V rms * 1500 V rms dc, Continuous ± 3500 V peak * ± 2000 V peak Common-Mode Rejection *

60 Hz, G = 100 V/V *

RS ≤ 500 Ω Impedance Imbalance 120 dB * * Leakage Current Input-to-Output * @ 240 V rms, 60 Hz 2 µA rms max * * INPUT IMPEDANCE Differential l0 12 Ω ** Common Mode 5 G Ω i5p F * * INPUT BIAS CURRENT Initial, @ +25 °C 30 pA typ (400 pA max) * * vs. Temperature (0 °C to +70°C) 10 nA max * * (–25°C to +85 °C) 30 nA max * * INPUT DIFFERENCE CURRENT Initial, @ +25 °C 5 pA typ (200 pA max) * * vs. Temperature(0 °C to + 70 °C) 2 nA max * * (–25°C to +85°C) 10 nA max * * INPUT NOISE Voltage (l kHz) 18 nV/ √Hz ** (10 Hz to 10 kHz) 4 µV rms * * Current (1 kHz) 0.01 pA/ √Hz ** FREQUENCY RESPONSE Bandwidth (–3 dB) * G = 1 V/V 20 kHz * * G = 100 V/V 15 kHz * * Settling Time ( ± 10 mV, 20 V Step) * G = 1 V/V 150 µs* * G = 100 V/V 500 µs* * Slew Rate (G = 1 V/V) 1 V/ µs* * OFFSET VOLTAGE (RTI) 2 Initial, @ +25 °C ± 15 ± 45/G) mV max ( ± 5 ± 15/G) mV max * vs. Temperature (0 °C to +70°C) ( ± 10 ± 30/G) µV/°C* * RATED OUTPUT 3 Voltage, 2 k Ω Load ± 10 V min * * Impedance 1 Ω max * * Ripple (Bandwidth = 100 kHz) 10 mV p-p max * * ISOLATED POWER OUTPUTS 4 Voltage, No Load ± 15 V * * Accuracy ± 10% * * Current ± 5m A * * Regulation, No Load to Full Load See Text * * Ripple See Text * * POWER SUPPLY Voltage, Rated Performance +15 V dc ± 5% * * Voltage, Operating +15 V dc ± 10% * * Current, Quiescent 50 mA * * Current, Full Load – Full Signal 80 mA * * TEMPERATURE RANGE Rated Performance –25 °C to +85°C* * Operating –40 °C to +85°C* * Storage –40 °C to +85°C* * PACKAGE DIMENSIONS Inches 1.00 × 2.10 × 0.350 * * Millimeters 25.4 × 53.3 × 8.9 * * NOTES *Specifications same as AD210AN. 1Nonlinearity is specified as a % deviation from a best straight line.. 2RTI – Referred to Input. 3A reduced signal swing is recommended when both ± VISS and ± VOSS supplies are fully loaded, due to supply voltage reduction. 4See text for detailed information. _ Specifications subject to change without notice. REV. A–2– OUTLINE DIMENSIONS Dimensions shown in inches and (mm). AC1059 MATING SOCKET CAUTION ESD (electrostatic discharge) sensitive device. Elec- trostatic charges as high as 4000 V readily accumu- late on the human body and test equipment and can discharge without detection. Although the AD210 features proprietary ESD protection circuitry, per- manent damage may occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality. WARNING! ESD SENSITIVE DEVICE

The AD210 basic block diagram is illustrated in Figure 1. impedance output capable of driving a 2 k Ω load. Figure 1. AD210 Block Diagram obtain gain while maintaining a very high input impedance.

1 VOUT

Figure 2. Basic Unity Gain Configuration Figure 3. Input Configuration for G > 1 can be handled with RF = 20 kΩ and RS1 = 200 kΩ . Figure 4. Summing or Current Input Configuration the input side, as it is better to null the offset ahead of the gain. Figure 5. Adjustments for Noninverting Input

figuration is used to minimize loss of output current to the base. Figure 18. Self-Powered Isolated Current Source limited to 5 mA output current.

4 CURRENT

Figure 19. Isolated Voltage-to-Current Loop Converter output of about +10 mV/°C for a 0°C to +400°C range. Figure 20. Isolated Thermocouple Amplifier shows one possible implementation. results, its input offset voltage must be trimmed as shown. interchanged to get 0 V to +10 V. ence with a ± 3500 V common-mode range. Figure 21. Precision Floating Programmable Reference

converts the 4-20 mA current into a +100 mV to +500 mV signal. will show –2.5 V at the output. Figure 22. Multichannel Data Acquisition Front-End