ADA4505-4ARUZ from UMW, in a TSSOP-14. 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	OUT A	output	Amplifier A output. Rail-to-rail output; short-circuit limited to ±40 mA (5 V supply). Drives loads down to ~10 kΩ with output swing to within tens of mV of the rails.
2	-IN A	input	Inverting input of amplifier A. High-impedance input (~220 GΩ), 0.5 pA typical bias current. Input voltage range extends from V- to V+.
3	+IN A	input	Non-inverting input of amplifier A. Rail-to-rail input, high-impedance (~220 GΩ), 0.5 pA typical bias current.
4	V+	power_in	Positive supply rail. Single-supply 1.8 V to 5 V (absolute maximum 5.5 V) or dual ±0.9 V to ±2.5 V. Common to all four amplifiers.
5	+IN B	input	Non-inverting input of amplifier B. Rail-to-rail input, high-impedance (~220 GΩ), 0.5 pA typical bias current.
6	-IN B	input	Inverting input of amplifier B. High-impedance input (~220 GΩ), 0.5 pA typical bias current.
7	OUT B	output	Amplifier B output. Rail-to-rail output; short-circuit limited to ±40 mA (5 V supply).
8	OUT C	output	Amplifier C output. Rail-to-rail output; short-circuit limited to ±40 mA (5 V supply).
9	-IN C	input	Inverting input of amplifier C. High-impedance input (~220 GΩ), 0.5 pA typical bias current.
10	+IN C	input	Non-inverting input of amplifier C. Rail-to-rail input, high-impedance (~220 GΩ), 0.5 pA typical bias current.
11	V-	power_in	Negative supply rail / ground for single-supply operation. Tie to GND for 1.8-5 V single-supply use, or to negative rail for ±0.9 V to ±2.5 V dual-supply operation.
12	+IN D	input	Non-inverting input of amplifier D. Rail-to-rail input, high-impedance (~220 GΩ), 0.5 pA typical bias current.
13	-IN D	input	Inverting input of amplifier D. High-impedance input (~220 GΩ), 0.5 pA typical bias current.
14	OUT D	output	Amplifier D output. Rail-to-rail output; short-circuit limited to ±40 mA (5 V supply).

Key specifications

Parameter	Value
Manufacturer	UMW
Package	TSSOP-14
Category	Op-amp/Cmp
Pins	14

Ordering variants

ADA4505-4ARUZ

CAD (KiCad official)

Symbol: ADA4505-4ARUZ
Footprint: Package_SO:TSSOP-14_4.4x5mm_P0.65mm
3D model: TSSOP-14 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`ada4505-4aruz.step`	194 KB	You want the bare part, or you mark your own boards.
`ada4505-4aruz-etched.step`	2.6 MB	You want the part with `ADA4505-4ARUZ` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 663 faces against 237 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

Datasheet: UMW datasheet (19 pp, sha256 d40a0d9cc85f7873, 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