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ADL5304ACPZ-R7
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Analog Devices Special Purpose Amplifiers, LFCSP-32(5x5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownADL5304ACPZ-R7
Analog Devices · Special Purpose Amplifiers · LFCSP-32(5x5)
ADL5304ACPZ-R7 from Analog Devices, in a LFCSP-32(5x5). 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; do not connect to this pin. |
| 2 | VSM1 | input | Guard voltage for INUM and IDEN inputs; connect to 1P5V for single supply operation. |
| 3 | VSM2 | input | Guard voltage for INUM and IDEN inputs; provides shield drive for low leakage in input stage. |
| 4 | INUM | input | Numerator current input for photodiode or external current source; range 1 pA to 10 mA. |
| 5 | IDEN | input | Denominator current input; connect to IREF pin for logarithmic ratio operation. |
| 6 | IREF | power_out | 100 nA trimmed reference current output; source current for IDEN denominator reference. |
| 7 | VSM3 | input | Guard voltage for INUM and IDEN inputs; provides low leakage shield biasing. |
| 8 | VSM4 | input | Guard voltage for INUM and IDEN inputs; connect to 1P5V for single supply operation. |
| 9 | VDEN | output | Denominator log amplifier voltage output; connect to INDN pin and decouple with 0.1 µF capacitor to ground. |
| 10 | INDN | input | Temperature compensation circuit denominator voltage input connected from VDEN output. |
| 11 | COMM | power_in | Main ground pin for circuit return. |
| 12 | NMFS | input | Numerator slew rate bias; connect through nominal 1 kΩ resistor to VNEG pin. |
| 13 | VNEG | power_in | Negative power supply; 0 V for single supply or −2 V to −5 V for dual supply operation. |
| 14 | DNFS | input | Denominator slew rate bias; connect through nominal 1 kΩ resistor to VNEG pin. |
| 15 | ACOM | power_in | Analog common ground, low noise reference ground; both ACOM pins (15 and 18) must be grounded. |
| 16 | HFCP | input | High frequency compensation pin for loop stability; decouple to ground as required. |
| 17 | 2VLT | power_out | 2.0 V reference voltage output; source current up to 20 mA for photodiode biasing. |
| 18 | ACOM | power_in | Analog common ground, low noise reference ground; both ACOM pins (15 and 18) must be grounded. |
| 19 | SCL3 | input | 7.5 kΩ trimming resistor for slope adjustment (see Figure 1); default no connect for standard 0.2 V/decade slope. |
| 20 | SCL2 | input | 5 kΩ trimming resistor for slope adjustment (see Figure 1); default connects to INMS for 0.2 V/decade slope. |
| 21 | SCL1 | input | 5 kΩ trimming resistor for slope adjustment (see Figure 1); default connects to VLOG for 0.2 V/decade slope. |
| 22 | VLOG | output | Main logarithmic output voltage; 0.5 V to 2.5 V for nominal 1 pA to 10 mA input current range. |
| 23 | INMS | input | Inverting input of output buffer amplifier; default connects to SCL2 pin. |
| 24 | INPS | input | Non-inverting input of output buffer amplifier; connect to 1P5V for single supply; must connect with DCBI and VSM1−VSM4. |
| 25 | NC | unconnected | No connect; do not connect to this pin. |
| 26 | 1P5V | power_out | 1.5 V reference voltage output; source current ≤5 mA, sink current ≤10 mA; bias VSMx, DCBI, and INPS for single supply. |
| 27 | DCBI | input | Approximately 1.3 mA bias current output; connect to VSM1 through VSM4 pins. |
| 28 | BSDC | input | Internal bias node; decouple to ground with series combination of 4 Ω resistor and 1 µF capacitor. |
| 29 | VPOS | power_in | Positive power supply; 4.5 V to 5.5 V nominal 5 V for single supply or up to ±5 V for dual supply. |
| 30 | IMON | output | Photodiode monitor current output; IMON = 1.1 × INUM for adaptive PD bias; maximum 11.5 mA. |
| 31 | INNM | input | Temperature compensation circuit numerator voltage input connected from VNUM output. |
| 32 | VNUM | output | Numerator log amplifier voltage output; connect to INNM pin without external capacitor for fastest response. |
| 33 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Analog Devices |
| Package | LFCSP-32(5x5) |
| Category | Amplifiers/Comparators |
| Pins | 33 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Rated input current range (VNEG = -5 V to -2 V) | 1e-12 | 0.01 | A | 流向各输入引脚(INUM和IDEN)，−5 V ≤ VNEG ≤ −2 V | 3 | ||
| Input guard offset voltage | VINUM − VVSUM | -2 | 0.6 | 2 | mV | 3 | |
| Log slope at 25°C | VY | 195 | 200 | 205 | mV/dec | 25°C | 3 |
| Log slope deviation | -2 | 3 | mV/dec | 3 | |||
| Log offset (VLOG vs VSUM) | -8 | 5 | mV | INUM = IDEN时VLOG与VSUM之间的差异 | 3 | ||
| Log law conformance error | -0.7 | 0.2 | 0.7 | dB | 1 nA至100 μA范围内相对于最佳拟合线的最大偏差 | 3 | |
| Output buffer offset voltage | -3 | 0.1 | 3 | mV | 3 | ||
| Output noise spectral density | 6 | µV/√Hz | INUM > 1 nA | 3 | |||
| Falling edge settling time | 0.5 | µs | INUM > 10 µA | 3 | |||
| Nominal voltage swing | 0.5 | 2.5 | V | 1 pA至10 mA输入电流范围 | 3 | ||
| Output impedance | 2 | Ω | 频率 < 1 MHz | 3 | |||
| 1.5 V reference output at 25°C | 1P5V | 1.495 | 1.5 | 1.505 | V | 25°C | 3 |
| 1.5 V reference output current | -10 | 5 | mA | 3 | |||
| 2.0 V reference output at 25°C | 2VLT | 1.995 | 2 | 2.005 | V | 25°C | 3 |
| 2.0 V reference output current | 0 | 20 | mA | 仅源电流 | 3 | ||
| Photodiode monitor current (IMON max) | IMON | 10.5 | 11 | 11.5 | mA | INUM = 1 mA (RS ≤ 100 Ω)，RMNTR = 10 × RS | 3 |
| IMON compliance voltage | 0 | 3 | V | 3 | |||
| Positive supply voltage | VPOS | 4.5 | 5 | 5.5 | V | 4 | |
| Supply current (VPOS, 5 V) | 13.5 | 16 | mA | INUM = IDEN = 10 µA; VPOS = 5 V, VNEG = 0 V | 4 | ||
| Supply current (VPOS over supply range) | 10 | 17 | mA | 4.5 V ≤ VPOS ≤ 5.5 V | 4 | ||
| Negative supply voltage (nominal) | VNEG | -5 | 0 | V | 标称值0 V(单电源) | 4 | |
| Supply current (VNEG = 0 V) | -8.5 | -7.3 | mA | INUM = IDEN = 10 µA; VPOS = 5 V, VNEG = 0 V | 4 | ||
| Supply current (VNEG = -5 V) | -10.5 | -6 | mA | VNEG = −5 V | 4 | ||
| Negative supply voltage range (dual supply, guard pins grounded) | VNEG | -5 | -2 | V | 双电源，VSMx、DCBI和INPS接地 | 4 | |
| Positive supply voltage (absolute maximum) | VPOS | 6 | V | 5 | |||
| Negative supply voltage (absolute maximum) | VNEG | -6 | V | 5 | |||
| Input current INUM, IDEN (absolute maximum) | 20 | mA | INUM、IDEN | 5 | |||
| Thermal resistance junction-to-ambient | θJA | 61.6 | °C/W | 2层JEDEC板，无气流 | 5 | ||
| Thermal resistance junction-to-case | θJC | 1.2 | °C/W | 5 | |||
| Maximum power dissipation | 0.6 | W | 裸露焊盘焊接至PCB | 5 | |||
| Maximum junction temperature | 125 | °C | 5 | ||||
| Operating temperature range | -40 | 85 | °C | 5 | |||
| Storage temperature range | -65 | 150 | °C | 5 | |||
| Pin temperature (soldering) | 300 | °C | 焊接60秒 | 5 |
CAD (KiCad official)
- Symbol:
ADL5304ACPZ-R7 - Footprint:
Package_DFN_QFN:QFN-32-1EP_5x5mm_P0.5mm_EP3.3x3.3mm - 3D model: LFCSP-32(5x5) (KiCad packages3D, STEP)
- 3D model files:
adl5304acpz-r7-etched.step/adl5304acpz-r7-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);adl5304acpz-r7.step/adl5304acpz-r7.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Analog Devices datasheet (32 pp, sha256
41768c182abfb976, retrieved 2026-09-21, tier: lcsc) - Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- Extractor: parts-factory
2.0.0/extract_pins 0.2, primaryclaude-haiku-4-5-20251001(text), consensusclaude-sonnet-4-6(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).