AD637JRZ

@@ -0,0 +1,66 @@+# AD637JRZ++**Analog Devices** · RMS To DC Converters · SOIC-16-300mil++AD637JRZ from Analog Devices, in a SOIC-16-300mil. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 1 | NC | unconnected | No connect. Leave floating. |+| 2 | CAV | passive | Averaging capacitor connection. External capacitor sets the averaging time constant of the rms computation. |+| 3 | -VS | power_in | Negative supply voltage. Typically -3 V to -18 V. |+| 4 | COM | power_in | Common (analog ground) return. |+| 5 | NC | unconnected | No connect. Leave floating. |+| 6 | BUF IN | input | Buffer amplifier input. High impedance input to the on-chip buffer amplifier, typically used for post-filtering or as an input buffer. |+| 7 | dB OUT | output | Logarithmic (dB) output. Provides an output proportional to the log of the rms input, useful for wide dynamic range measurements. |+| 8 | BUF OUT | output | Buffer amplifier output. Low impedance output of the on-chip buffer amplifier. |+| 9 | NC | unconnected | No connect. Leave floating. |+| 10 | OUTPUT OFFSET | input | Output offset trim. Connect to a potentiometer between +VS and -VS to null the output offset voltage. |+| 11 | OUTPUT | output | RMS output. Provides the true rms (or mean square / absolute value depending on configuration) of the input signal. |+| 12 | SUMMING JUNCTION | input | Summing junction of the output amplifier. Access for external feedback and gain-setting resistors. |+| 13 | +VS | power_in | Positive supply voltage. Typically +3 V to +18 V. |+| 14 | dB COMMON | passive | dB output common. Reference/return pin for the dB output scaling network. |+| 15 | INPUT | input | Signal input to the RMS converter. Accepts AC signals up to the specified bandwidth; typically 1 V rms full scale. |+| 16 | NC | unconnected | No connect. Leave floating. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Analog Devices |+| Package | SOIC-16-300mil |+| Category | Data Acquisition |+| Pins | 16 |++## Ordering variants++Same part, different packaging or reel option.++- `AD637JRZ`+- `AD637JRZ-R7`+- `AD637JRZ-RL`+- `AD637JRZKRZ`+- `AD637JRZKRZ-R7`+- `AD637JRZKRZ-RL`+- `AD637JRZSQ`+- `AD637JRZSQ/883B`+- `AD637JRZAQ`+- `AD637JRZBQ`++## CAD (KiCad official)++- Symbol: `AD637JRZ`+- Footprint: `Package_SO:SOIC-16_3.9x9.9mm_P1.27mm`+- 3D model: SOIC-16-300mil (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Analog Devices datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588939971172438017) (25 pp, sha256 `3171019912ad7953`, retrieved 2026-08-17, tier: lcsc)+- **Extractor:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.+- **CAD:** KiCad official libraries (CC-BY-SA 4.0).++[Datasheet PDF](docs/ad637jrz-datasheet.pdf)

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