# MAX49925ATB

**ANALOG DEVICES** · Global Sourcing Parts · TDFN-10-EP(3x3)

MAX49925ATB from ANALOG DEVICES, in a TDFN-10-EP(3x3). Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | RS+ | input | External resistor power-side connection input; common-mode range -40V to +76V, protected from -42V to +80V. |
| 2 | RS- | input | External resistor load-side connection input; common-mode range -40V to +76V, protected from -42V to +80V. |
| 3 | N.C. | unconnected | Not connected. |
| 4 | OUT | output | Current-sense output with its common-mode point at VREF; rail-to-rail, continuous current limited to 10mA. |
| 5 | GND | power_in | Ground; signal and power return. |
| 6 | VDD | power_in | Supply voltage input of 2.7V to 5.5V; bypass to ground with a 10nF C0G/NP0 and 1µF X5R. |
| 7 | REF2 | input | Reference input 2; VREF = (VREF1 + VREF2)/2 sets the output common-mode point. |
| 8 | REF1 | input | Reference input 1; VREF = (VREF1 + VREF2)/2 sets the output common-mode point. |
| 9 | GAIN2 | input | Gain selection input 2; with GAIN1 selects gain of 10, 20, 50 or 100V/V (logic low to GND, high to VDD). |
| 10 | GAIN1 | input | Gain selection input 1; with GAIN2 selects gain of 10, 20, 50 or 100V/V (logic low to GND, high to VDD). |
| 11 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | ANALOG DEVICES |
| Package | TDFN-10-EP(3x3) |
| Category | Global Sourcing Parts |
| Pins | 11 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Supply Voltage | VDD | 2.7 |  | 5.5 | V | Guaranteed by PSRR | 4 |
| Supply Current | IDD |  | 5 | 7 | mA |  | 4 |
| Input-Protected Common-Mode Range | VCM_P | -42 |  | 80 | V |  | 4 |
| Input Common-Mode Range | VCM | -40 |  | 76 | V | -40°C ≤ TA ≤ +125°C | 4 |
| Input Bias Current | IRS+, IRS- |  | 3 | 300 | nA | VSENSE = 0V (Note 1) | 4 |
| Input Bias Current | IRS+, IRS- |  | 3.5 | 6 | µA | VSENSE = 20mV | 4 |
| Input Leakage Current | ILKG |  | 3 | 400 | nA | VDD = 0V, 0V ≤ VRS± ≤ 65V (Note 1) | 4 |
| Input Offset Voltage | VOS |  | 5 | 20 | μV | TA = +25°C | 4 |
| Input Offset Voltage | VOS |  |  | 200 | μV | -40°C ≤ TA ≤ +125°C | 4 |
| Power Supply Rejection Ratio | PSRR | 90 | 110 |  | dB | 2.7V ≤ VDD ≤ 5.5V | 4 |
| Common-Mode Rejection Ratio | CMRR | 120 | 140 |  | dB | -40V ≤ VCM ≤ +76V; -40°C ≤ TA ≤ +125°C | 4 |
| Gain Error | GE |  | 0.05 | 0.3 | % | -40°C ≤ TA ≤ +125°C, -800mV/gain ≤ VSENSE ≤ 800mV/gain | 4 |
| Output Voltage Swing High | VOH |  | 45 | 100 | mV | Sourcing 5mA; VOH = VDD - VOUT | 4 |
| Output Voltage Swing Low | VOL |  | 35 | 70 | mV | Sinking 5mA; VOL = VOUT - GND | 4 |
| Input Low Level | VIL |  |  | 0.55 | V |  | 5 |
| Input High Level | VIH | 1.3 |  |  | V |  | 5 |
| Logic Input Leakage Current | IL |  | 3 | 30 | nA |  | 5 |
| Power-Up Time | tPWR_UP |  | 200 |  | µs | Out settle within 1% | 4 |
| Input Offset Drift | TCVOS |  | 0.05 |  | µV/°C |  | 4 |
| Input Capacitance | CIN |  | 3 |  | pF | RS+ and RS- input | 4 |
| Output Short-Circuit Current | ISC |  | 20 |  | mA | Shorted to either VDD or GND | 4 |
| Reference Voltage Rejection Ratio | RRRR |  | 2 |  | µV/V |  | 4 |
| Signal Bandwidth | BW-3dB |  | 300 |  | kHz |  | 4 |
| Output Slew Rate | SR |  | 1.5 |  | V/µs | 2VP-P output square wave, centered at 1.65V | 4 |
| Amplifier Small-Signal Settling Time (1%) | tS |  | 2.5 |  | µs | ±200mV output step | 4 |
| PWM Edge Recovery Settling Time | tS_PWM |  | 500 |  | ns | 0 to 50V edges: 500V/μs rise/fall times, VSENSE = 0mV (VRS+ = VRS-) | 4 |
| AC Common-Mode Rejection Ratio | AC CMRR |  | 60 |  | dB | 100mVAC sine, f = 100kHz | 4 |
| AC Power Supply Rejection Ratio | AC PSRR |  | 60 |  | dB | 100mVAC sine, f = 100kHz | 5 |
| Voltage Noise Density | en |  | 150 |  | nV/√Hz | At 10kHz | 5 |
| RS+ and RS- to GND |  | -42 |  | 80 | V |  | 3 |
| RS+ to RS- |  | -2 |  | 2 | V |  | 3 |
| VDD to GND | VDD | -0.3 |  | 6 | V |  | 3 |
| REF1, REF2, GAIN1, GAIN2, OUT to GND |  | -0.3 |  |  | V | Upper limit VDD + 0.3V | 3 |
| Continuous Current in REF1, REF2, GAIN1, GAIN2 |  |  |  | 10 | mA |  | 3 |
| Continuous Current in OUT |  |  |  | 10 | mA |  | 3 |
| Continuous Current in RS+ and RS- |  |  |  | 10 | mA |  | 3 |
| Continuous Power Dissipation |  |  |  | 1951.2 | mW | Multilayer board, TA = +70°C, derate 24.4mW/°C above +70°C | 3 |
| Operating Temperature Range |  | -40 |  | 125 | °C |  | 3 |
| Storage Temperature Range |  | -65 |  | 150 | °C |  | 3 |
| Thermal Resistance, Junction to Ambient | θJA |  | 41 |  | °C/W | Four-layer board, 10 TDFN | 3 |
| Thermal Resistance, Junction to Case | θJC |  | 9 |  | °C/W | Four-layer board, 10 TDFN | 3 |

## CAD (KiCad official)

- Symbol: `MAX49925ATB`
- Footprint: `Package_DFN_QFN:DFN-10-1EP_3x3mm_P0.5mm_EP1.55x2.48mm`
- 3D model: TDFN-10-EP(3x3) (KiCad packages3D, STEP)
- 3D model files: `max49925atb-etched.step` / `max49925atb-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `max49925atb.step` / `max49925atb.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [ANALOG DEVICES datasheet](https://www.analog.com/media/en/technical-documentation/data-sheets/max49925.pdf) (14 pp, sha256 `e6713be6e8700dad`, retrieved 2026-10-31, tier: manufacturer)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text), consensus `claude-sonnet-5-5` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/max49925atb-datasheet.pdf)