AD8436ARQZ-R7

IC RMS TO DC CONVERTER 20QSOP

The AD8436ARQZ-R7 is a precision true RMS-to-DC converter with a supply range of ±2.4 V to ±18 V and an input range of 100 μV rms to 3 V rms, housed in a 20-lead QSOP package, featuring low power consumption and high accuracy.Checked against the datasheet

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Technical parameters

Datasheet-verified parameters

18 items

Parameter	Value and test conditions	Source
Package	20-Lead QSOP (RQ-20)
Operating Temperature Range	-40°C to +125°C
Grade	A
Supply Voltage Range	Dual: ±2.4 V to ±18 V; single: 4.8 V to 36 V
Input Voltage Range	100 μV rms to 3 V rms (8.5 V p-p)
Accuracy	±10 μV ± 0.25% of reading (B grade)
Bandwidth	1 MHz for −3 dB (300 mV); 65 kHz for additional 1% error
Quiescent Current	300 µA typical at ±2.4 V
Output Offset Voltage	≤10 μV
Crest Factor Error	<0.5% for CF values between 1 and 10
Input Impedance	RIN ≥ 10^12 Ω, CIN ≤ 2 pF
Absolute Maximum Rating - Supply Voltage	±18 V
Absolute Maximum Rating - Input Voltage Range	VEE – 0.3 V to VCC + 0.3 V
Absolute Maximum Rating - Input Current	±10 mA
Absolute Maximum Rating - Power Dissipation	RQ Package: 1.1 W
Absolute Maximum Rating - Storage Temperature	-65°C to +125°C
ESD Rating	2 kV
Protection Features	ESD protected

All parameters (10)ExpandCollapse

Power
Current - Supply	325 µA
Voltage - Supply	±2.4V ~ 18V, 4.8V ~ 36V
Environment and package
Mounting Type	Surface Mount
Package	Tape & Reel (TR); Cut Tape (CT); Digi-Reel®
Package / Case	20-SSOP (0.154", 3.90mm Width)
Supplier Device Package	20-QSOP
Other
Base Product Number	AD8436
Mfr	Analog Devices Inc.
Product Status	Active
Series	-

Pinout and package

Figure 4. Pin Configuration, R… — Package: **20-Lead QSOP (RQ-20)**

Pin	Name	Function	Source
1		SUM: Summing Amplifier Input Pin
2		DNC: Do Not Connect. Used for factory test.
3		RMS: AC Input to the RMS Core
4		IBUFOUT: FET Input Buffer Output Pin
5		IBUFIN-: FET Input Buffer Inverting Input Pin
6		IBUFIN+: FET Input Buffer Noninverting Input Pin
7		IBUFGN: Optional 10 kΩ Precision Gain Resistor
8		DNC: Do Not Connect. Used for factory test.
9		OGND: Internal 16 kΩ I-to-V Resistor
10		OUT: RMS Core Voltage or Current Output
11		VEE: Negative Supply Rail
12		IGND: Half Supply Node
13		OBUFIN+: Output Buffer Noninverting Input Pin
14		OBUFIN-: Output Buffer Inverting Input Pin
15		OBUFOUT: Output Buffer Output Pin
16		OBUFV+: Power Pin for the Output Buffer
17		IBUFV+: Power Pin for the Input Buffer
18		VCC: Positive Supply Rail for the RMS Core
19		CCF: Connection for Crest Factor Capacitor
20		CAVG: Connection for Averaging Capacitor

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