AD8436JCPZ-R7 LFCSP-20 RMS-DC converter ADI original stock
summary
AD8436 is a new generation of precision transconductance linear, low-power, true RMS-TO-DC converter single-chip system. It can accurately calculate the DC equivalent value of the RMS value of the AC waveform, including complex modes powered by a switch mode power supply and controlled by a three terminal bidirectional thyristor. It can provide high-precision conversion over a wide input level (see Figure 2) and temperature range. With the latest ADI company technology, it can ensure accuracy of ≤ ± 0.5% and ≤ 10 μ The output of V is out of balance. When the CF value is between 1 and 10, the peak factor error is less than 0.5%.
Due to the elimination of internal bias current, the precision DC output buffer can provide extremely low offset voltage when driving low impedance loads, minimizing errors. AD8436 is different from digital solutions in that its performance is not limited by switching circuits at high and low amplitudes (see Figure 2). It can respond to<100 μ The input signals of V and>3 V expand the dynamic range without external adjustment, and can adapt to harsh low-level signal conditions, supporting a wide range without clamping.
AD8436 provides true RMS results at a lower cost than peak, mean, or digital solutions. Without considering programming costs or processor overhead, the 4mm x 4mm package is easily suitable for compact applications. On chip buffer amplifiers can provide the widest selection range without being affected by cost. The lowest cost application only requires an external averaging capacitor. The built-in high impedance FET buffer provides an interface that can be used for external attenuators, frequency compensation, or driving low impedance loads. It has a pair of matched internal resistors, which can easily achieve gain configurations of 2 or higher, and the available input range can also be extended to lower levels. The AD8436 features low-power precision input buffering, making it ideal for portable multimeters and other battery powered applications.
AD8436 adopts single or dual power supply, with a voltage range of ± 2.4 V (4.8 V) to ± 18 V (36 V). The A-level and J-level adopt a compact 20 pin 4mm x 4mm chip level package; The A-level also offers a 20 pin QSOP package. There are two types of operating temperature ranges: A-grade from − 40 ° C to 125 ° C, and J-grade from 0 ° C to 70 ° C.
characteristic
Provide true RMS or average rectification value of AC waveform
Can be quickly established at any input level
Accuracy: ± 10 μ ± 0.5% of V reading
Wide dynamic input range
one hundred μ V rms to 3 V rms (8.5 V p-p) full scale input range
Higher input values when using external adjustments
Broadband width:
− 3 dB (300 mV) with a bandwidth of 1 MHz
1% additional error bandwidth of 65 kHz
Zero converter DC output offset
No residual switching products
Rated 300 mV rms input
Accurate conversion with peak factor up to 10
Low power consumption: typical value of 300 µ A at ± 2.4 V
High impedance FET separately powered input buffer
RI
AD8436 is a new generation of precision transconductance linear, low-power, true RMS-TO-DC converter single-chip system. It can accurately calculate the DC equivalent value of the RMS value of the AC waveform, including complex modes powered by a switch mode power supply and controlled by a three terminal bidirectional thyristor. It can provide high-precision conversion over a wide input level (see Figure 2) and temperature range. With the latest ADI company technology, it can ensure accuracy of ≤ ± 0.5% and ≤ 10 μ The output of V is out of balance. When the CF value is between 1 and 10, the peak factor error is less than 0.5%.
Due to the elimination of internal bias current, the precision DC output buffer can provide extremely low offset voltage when driving low impedance loads, minimizing errors. AD8436 is different from digital solutions in that its performance is not limited by switching circuits at high and low amplitudes (see Figure 2). It can respond to<100 μ The input signals of V and>3 V expand the dynamic range without external adjustment, and can adapt to harsh low-level signal conditions, supporting a wide range without clamping.
AD8436 provides true RMS results at a lower cost than peak, mean, or digital solutions. Without considering programming costs or processor overhead, the 4mm x 4mm package is easily suitable for compact applications. On chip buffer amplifiers can provide the widest selection range without being affected by cost. The lowest cost application only requires an external averaging capacitor. The built-in high impedance FET buffer provides an interface that can be used for external attenuators, frequency compensation, or driving low impedance loads. It has a pair of matched internal resistors, which can easily achieve gain configurations of 2 or higher, and the available input range can also be extended to lower levels. The AD8436 features low-power precision input buffering, making it ideal for portable multimeters and other battery powered applications.
AD8436 adopts single or dual power supply, with a voltage range of ± 2.4 V (4.8 V) to ± 18 V (36 V). The A-level and J-level adopt a compact 20 pin 4mm x 4mm chip level package; The A-level also offers a 20 pin QSOP package. There are two types of operating temperature ranges: A-grade from − 40 ° C to 125 ° C, and J-grade from 0 ° C to 70 ° C.
characteristic
Provide true RMS or average rectification value of AC waveform
Can be quickly established at any input level
Accuracy: ± 10 μ ± 0.5% of V reading
Wide dynamic input range
one hundred μ V rms to 3 V rms (8.5 V p-p) full scale input range
Higher input values when using external adjustments
Broadband width:
− 3 dB (300 mV) with a bandwidth of 1 MHz
1% additional error bandwidth of 65 kHz
Zero converter DC output offset
No residual switching products
Rated 300 mV rms input
Accurate conversion with peak factor up to 10
Low power consumption: typical value of 300 µ A at ± 2.4 V
High impedance FET separately powered input buffer
RI