# AMC7823IRTAR

**Texas Instruments** · ADCs/DACs - Special Purpose · WQFN-40(6x6)

AMC7823IRTAR from Texas Instruments, in a WQFN-40(6x6). 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 | GALR | output | Global analog input out-of-range alarm; this pin goes low (active) when one or more of the first four accessed analog inputs is out of preset range. |
| 2 | DAV | output | Data available indicator; in auto-mode a 2μs active-low pulse appears on this pin when a conversion cycle finishes, and it stays high when deactivated. |
| 3 | ELDAC | input | External DAC synchronous load trigger; DACs selected for external synchronous load update simultaneously on the rising edge of ELDAC. |
| 4 | ISET_RESISTOR | passive | The resistor connected from the analog supply to this pin sets the current output from PRECISION_I_OUTPUT; the voltage across the set resistor should be limited to about 0.5V. |
| 5 | PRECISION_I_OUTPUT | output | Current output to drive a thermistor, with output current range 0.01 mA to 10 mA and compliance voltage of about 2V. |
| 6 | DAC 0_OUT | output | Output of DAC 0, programmable from 0 to VREF or 0 to 2 × VREF. |
| 7 | DAC 1_OUT | output | Output of DAC 1, programmable from 0 to VREF or 0 to 2 × VREF. |
| 8 | DAC 2_OUT | output | Output of DAC 2, programmable from 0 to VREF or 0 to 2 × VREF. |
| 9 | DAC 3_OUT | output | Output of DAC 3, programmable from 0 to VREF or 0 to 2 × VREF. |
| 10 | SGND | power_in | Analog input signal ground; must connect to the ground of the analog input source to minimize digital noise. |
| 11 | CH0 | passive | Analog input channel 0, with input range 0 to 2 × VREF. |
| 12 | CH1 | passive | Analog input channel 1, with input range 0 to 2 × VREF. |
| 13 | CH2 | passive | Analog input channel 2, with input range 0 to 2 × VREF. |
| 14 | CH3 | passive | Analog input channel 3, with input range 0 to 2 × VREF. |
| 15 | AGND | power_in | Analog ground. |
| 16 | AVDD | power_in | Analog power supply, +3V to +5V; must be the same value as DVDD. |
| 17 | CH4 | passive | Analog input channel 4, with input range 0 to 2 × VREF. |
| 18 | CH5 | passive | Analog input channel 5, with input range 0 to 2 × VREF. |
| 19 | CH6 | passive | Analog input channel 6, with input range 0 to 2 × VREF. |
| 20 | CH7 | passive | Analog input channel 7, with input range 0 to 2 × VREF. |
| 21 | EXT_REF_IN | bidirectional | External reference input; when internal reference is selected it works as the internal reference output with 10kΩ output impedance. |
| 22 | DAC 4_OUT | output | Output of DAC 4, programmable from 0 to VREF or 0 to 2 × VREF. |
| 23 | DAC 5_OUT | output | Output of DAC 5, programmable from 0 to VREF or 0 to 2 × VREF. |
| 24 | DAC 6_OUT | output | Output of DAC 6, programmable from 0 to VREF or 0 to 2 × VREF. |
| 25 | DAC 7_OUT | output | Output of DAC 7, programmable from 0 to VREF or 0 to 2 × VREF. |
| 26 | RESET | input | Reset input; a logic low on this pin causes the part to perform a hardware reset. |
| 27 | GPIO-0/ALR0 | bidirectional | Multiple-function I/O pin that works as digital I/O or as the ALR pin of the first analog input; an external pull-up is required when used as output. |
| 28 | GPIO-1/ALR1 | bidirectional | Multiple-function I/O pin that works as digital I/O or as the ALR pin of the second analog input; an external pull-up is required when used as output. |
| 29 | GPIO-2/ALR2 | bidirectional | Multiple-function I/O pin that works as digital I/O or as the ALR pin of the third analog input; an external pull-up is required when used as output. |
| 30 | GPIO-3/ALR3 | bidirectional | Multiple-function I/O pin that works as digital I/O or as the ALR pin of the fourth analog input; an external pull-up is required when used as output. |
| 31 | CONVERT | input | External conversion trigger; the rising edge starts ADC sampling and conversion when external trigger mode is selected. |
| 32 | SCLK | input | Serial clock input for the SPI interface. |
| 33 | MOSI | input | Master out, slave in; digital data input for the serial interface. |
| 34 | MISO | output | Master in, slave out; digital data output for the serial interface, high impedance when SS is high. |
| 35 | SS | input | Active-low slave select input; data is not clocked into MOSI unless SS is low. |
| 36 | BVDD | power_in | Interface power supply; connect to 3V for 3V logic or 5V for 5V logic, and it must not exceed AVDD or DVDD. |
| 37 | DVDD | power_in | Digital power supply, +3V to +5V; must be the same value as AVDD. |
| 38 | DGND | power_in | Digital ground. |
| 39 | GPIO-4 | bidirectional | Dedicated general-purpose bidirectional digital I/O pin. |
| 40 | GPIO-5 | bidirectional | Dedicated general-purpose bidirectional digital I/O pin. |
| 41 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | WQFN-40(6x6) |
| Category | Data Acquisition |
| Pins | 41 |

## 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 to GND | AVDD, DVDD, BVDD | -0.3 |  | 6 | V | Over operating free-air temperature range | 2 |
| Digital input voltage to GND |  | -0.3 |  |  | V | max BVDD + 0.3 V | 2 |
| Analog input voltage to GND |  | -0.3 |  |  | V | max AVDD + 0.3 V | 2 |
| Input current, continuous |  | -20 |  | 20 | mA |  | 2 |
| Input current, momentary |  | -100 |  | 100 | mA |  | 2 |
| Operating temperature range |  | -40 |  | 105 | °C |  | 2 |
| Storage temperature range |  | -65 |  | 150 | °C |  | 2 |
| Junction temperature range (TJ max) | TJ |  |  | 150 | °C |  | 2 |
| Thermal impedance junction-to-case | θJC |  | 15 |  | °C/W |  | 2 |
| Thermal impedance junction-to-ambient | θJA |  | 60 |  | °C/W |  | 2 |
| ADC integral linearity |  | -1.25 |  | 1.25 | LSB | +5V electrical characteristics | 3 |
| ADC differential linearity |  | -1 |  | 1.25 | LSB | +5V electrical characteristics | 3 |
| ADC offset error |  | -2 |  | 2 | LSB | +5V electrical characteristics | 3 |
| ADC offset error drift |  | -4 |  | 4 | ppmFS/°C | +5V electrical characteristics | 3 |
| ADC gain error |  | -6 |  | 6 | LSB | +5V electrical characteristics | 3 |
| ADC gain error match |  |  | 0.3 | 1 | LSB | +5V electrical characteristics | 3 |
| DAC output current |  | -1 |  | 1 | mA | Refer to Typical Characteristics | 3 |
| DAC integral linearity |  |  | 2 | 8 | LSB | Measured from code 0x008 to 0xFFF | 3 |
| DAC differential linearity |  |  | 0.2 | 1 | LSB | +5V electrical characteristics | 3 |
| DAC offset error |  |  | 0.5 | 5 | mV | Output range = 0 to VREF | 3 |
| DAC offset error |  |  | 1 | 10 | mV | Output range = 0 to 2 × VREF | 3 |
| DAC offset error drift |  | -4 |  | 4 | ppmFS/°C | +5V electrical characteristics | 3 |
| DAC gain error |  |  | 0.3 | 1 | %FS | Output range = 0 to 2 × VREF | 3 |
| Precision current source output current range |  | 0.01 |  | 10 | mA |  | 4 |
| Output current accuracy |  | 99.5 | 100 | 100.5 | μA | Iout = 100μA | 4 |
| Output current drift |  |  | 40 |  | ppm/°C | Iout = 100μA | 4 |
| Compliance voltage of pin |  | 3 |  | 4.25 | V | Iout = 10mA | 4 |
| Internal reference voltage |  | 2.495 | 2.5 | 2.505 | V | At +25°C | 4 |
| Internal reference drift |  | -15 |  | 15 | ppm/°C | -40°C to +85°C | 4 |
| Short-circuit current |  |  |  | 250 | μA |  | 4 |
| External reference voltage |  | 1.2 |  | 2.55 | V |  | 4 |
| Temperature sensor accuracy |  | -4 |  | 4 | °C | VREF = 2.5V | 4 |
| Temperature sensor accuracy |  | -2 |  | 2 | °C | VREF = 1.25V | 4 |
| Level of pin GALR and DAV, high output | VOH | 2.4 |  |  | V | IOH = 0.7mA; max BVDD | 4 |
| Level of pin GALR and DAV, low output | VOL | 0 |  | 0.4 | V | IOL = 180μA | 4 |
| Digital input high level (BVDD = 5V) | VIH | 3.5 |  |  | V | BVDD = 5V, IIH = 5μA; max BVDD + 0.3 V | 4 |
| Digital input low level (BVDD = 5V) | VIL | 0 |  | 0.8 | V | BVDD = 5V, IIL = -5μA | 4 |
| Digital output high level (BVDD = 5V) | VOH | 4 |  |  | V | BVDD = 5V, IOH = -3mA | 4 |
| Digital output low level (BVDD = 5V) | VOL | 0 |  | 0.4 | V | BVDD = 5V, IOL = 3mA | 4 |
| Digital input high level (BVDD = 3V) | VIH | 2.1 |  |  | V | BVDD = 3V, IIH = 5μA; max BVDD + 0.3 V | 4 |
| Digital input low level (BVDD = 3V) | VIL | 0 |  | 0.6 | V | BVDD = 3V, IIL = -5μA | 4 |
| Digital output high level (BVDD = 3V) | VOH | 2.4 |  |  | V | BVDD = 3V, IOH = -3mA | 4 |
| Digital output low level (BVDD = 3V) | VOL | 0 |  | 0.4 | V | BVDD = 3V, IOL = 3mA | 4 |
| Power-supply voltage AVDD | AVDD | 2.7 | 5 | 5.5 | V | +5V electrical characteristics | 5 |
| Power-supply voltage DVDD | DVDD | 2.7 |  | 5.5 | V | +5V electrical characteristics | 5 |
| Power-supply voltage BVDD | BVDD | 2.7 |  | 5.5 | V | +5V electrical characteristics | 5 |
| Quiescent current of AVDD in normal operation | IDD |  | 15 | 20 | mA | In normal operation, precision current source = 0, no DAC load | 5 |
| Specified performance temperature range |  | -40 |  | 85 | °C |  | 5 |
| ADC offset error |  | -3 |  | 3 | LSB | +3V electrical characteristics | 6 |
| ADC gain error |  | -12 |  | 12 | LSB | +3V electrical characteristics | 6 |
| ADC gain error match |  |  | 0.3 | 1.5 | LSB | +3V electrical characteristics | 6 |
| DAC gain error |  |  | 0.2 | 1 | %FS | Output range = 0 to 2 x VREF, +3V | 6 |
| Compliance voltage of pin |  | 1.9 |  | 2 | V | AVDD = 2.7V, Iout = 10mA | 7 |
| Internal reference voltage |  | 1.247 | 1.25 | 1.253 | V | At +25°C, +3V electrical characteristics | 7 |
| Internal reference drift |  | -20 |  | 20 | ppm/°C | -40°C to +85°C | 7 |
| Short-circuit current |  |  |  | 125 | μA | +3V electrical characteristics | 7 |
| External reference voltage |  | 1.2 |  | 1.28 | V | +3V electrical characteristics | 7 |
| Power-supply voltage AVDD | AVDD | 2.7 | 3 | 3.3 | V | +3V electrical characteristics | 7 |
| Quiescent current of AVDD in normal operation | IDD |  | 10 | 15 | mA | In normal operation, +3V electrical characteristics | 7 |

## CAD (KiCad official)

- Symbol: `AMC7823IRTAR`
- Footprint: `Package_DFN_QFN:QFN-40-1EP_6x6mm_P0.5mm_EP4.6x4.6mm`
- 3D model: WQFN-40(6x6) (KiCad packages3D, STEP)
- 3D model files: `amc7823irtar-etched.step` / `amc7823irtar-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `amc7823irtar.step` / `amc7823irtar.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/lit/ds/symlink/amc7823.pdf) (56 pp, sha256 `4ca9ccf47d69e7ab`, retrieved 2026-11-05, tier: manufacturer)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-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/amc7823irtar-datasheet.pdf)