True RMS-to-DC Converters

4

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Input Bias Current

20

300

nA

Input Resistance

10

8

Ω

Output Current

Source

+5

mA

Sink

-130

µA

Short-Circuit Current

20

mA

UNITS

MIN

TYP

MAX

CONDITIONS

PARAMETER

Input and Output Voltage Range

V

Input Offset Voltage

Small-Signal Bandwidth

±0.5

±4

mV

1

MHz

Slew Rate (Note 4)

5

V/µs

ELECTRICAL CHARACTERISTICS—MX536A (continued)

ELECTRICAL CHARACTERISTICS—MX636

MHz

1.5

±3dB Bandwidth

900

kHz

100

130

MX636K

Bandwidth for 1%

Additional Error (0.09dB)

90

kHz

14

MX636J

-0.5

Additional Error

-0.2

±% of

Reading

Specified Accuracy

Crest Factor = 6

±0.1 ±0.1

Crest Factor = 3

Total Error, External Trim

(Note 5)

mV ±% of

Reading

±0.3 ±0.1

MX636K

±0.2 ±0.5

MX636J

Total Error, Internal Trim

(Notes 5, 6)

mV ±% of

Reading

±0.5 ±1.0

Crest Factor 1 to 2

Transfer Equation

±0.1

Total Error vs. DC Reversal

±% of

Reading

±0.2

mV ±% of

Reading/V

±0.1 ±0.01

MX636J

Total Error vs. Supply

MX636K

Total Error vs. Temperature

(0°C to +70°C)

mV ±% of

Reading/°C

±0.1 ±0.01

±0.1 ±0.005

MX636K

MX636J

UNITS

MIN

TYP

MAX

CONDITIONS

PARAMETER

BUFFER AMPLIFIER

Figure 3

25

Averaging Time Constant

CONVERSION ACCURACY

ERROR vs. CREST FACTOR (Note 3)

FREQUENCY RESPONSE (Notes 6, 8)