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Analog Devices Inc. ADP7183ACPZN1.8-R7
- Part No.:
- ADP7183ACPZN1.8-R7
- Manufacturer:
- Analog Devices Inc.
- Package:
- 8-UFDFN Exposed Pad, CSP
- Datasheet:
-
ADP7183ACPZN1.8-R7.pdf
- Description:
- IC REG LINEAR -1.8V 300MA 8LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:2,902
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Product details
Overview
ADP7183ACPZN1.8-R7 from Analog Devices is a negative-output, ultralow-noise, high-PSRR LDO linear regulator delivering −300 mA at fixed −1.8 V output. It operates from −2.0 V to −5.5 V input, features 4 μV rms output noise (100 Hz–100 kHz), 75 dB PSRR at 10 kHz, and −130 mV dropout at full load-designed for powering precision analog circuits such as ADCs and DACs in medical instrumentation.
For engineers reviewing the ADP7183ACPZN1.8-R7 datasheet, ADP7183ACPZN1.8-R7 pinout, ADP7183ACPZN1.8-R7 application, or ADP7183ACPZN1.8-R7 equivalent, key selection criteria include negative-input compatibility, sub-5-μV noise performance, thermal robustness in 2 mm × 2 mm LFCSP, and support for ±2.6% output accuracy across line/load/temperature.
Technical Context
The ADP7183ACPZN1.8-R7 uses a proprietary CMOS architecture with an NMOS pass transistor and internal −1.8 V regulated supply (VREG) to drive its error amplifier and reference circuitry. Its feedback path includes dedicated low-noise reference pins (VA, VAFB) enabling stable regulation with only 4.7 μF ceramic output capacitance.
It supports dual enable logic polarity (−1.3 V low / +1.25 V high thresholds), integrates undervoltage lockout (UVLO rising at −1.77 V), and provides current-limit (−600 mA typ.) and thermal shutdown (150°C) protection-ensuring reliable operation in industrial and medical systems with variable input rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed −1.8 V; enables direct replacement of legacy negative LDOs without external resistors. |
| Max Output Current | −300 mA; sufficient to power dual-channel precision ADCs or RF front-end bias networks. |
| Output Noise | 4 μV rms (100 Hz–100 kHz); preserves SNR in 16-bit+ data converters without additional filtering. |
| PSRR @ 10 kHz | 75 dB typical; suppresses switching noise from upstream DC/DC converters feeding sensitive analog stages. |
| Dropout Voltage | −130 mV typical at −300 mA; allows operation with minimal headroom from −2.0 V input (e.g., −2.0 V rail → −1.8 V output). |
| Input Voltage Range | −2.0 V to −5.5 V; compatible with standard negative supply rails in instrumentation and telecom infrastructure. |
| Accuracy | ±2.6% over line/load/temperature; ensures stable reference voltage for metrology-grade signal chains. |
Pinout & Package
ADP7183ACPZN1.8-R7 is housed in an 8-lead, 2 mm × 2 mm LFCSP package with exposed pad (EP) electrically connected to VIN. The EP must be soldered to the input voltage plane for optimal thermal performance (θJA = 68.8°C/W on 4-layer board).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VOUT (Pin 1) | Regulated negative output | Delivers stable −1.8 V; requires ≥4.7 μF ceramic capacitor to GND for stability and transient response. |
| SENSE (Pin 2) | Output voltage sense | Connected directly to VOUT pin to enable remote sensing and improve load regulation accuracy. |
| VA (Pin 3) | Low-noise reference voltage | Internal −0.5 V reference; bypassed with 1 μF capacitor to GND to minimize noise coupling into feedback path. |
| VAFB (Pin 4) | Feedback reference input | Not used in fixed −1.8 V version; left unconnected or tied to VA per datasheet guidance for noise reduction. |
| EN (Pin 5) | Enable control | Accepts −1.3 V (low) or +1.25 V (high) logic; enables flexible power sequencing with positive/negative controllers. |
| GND (Pin 6) | Analog ground reference | Common return for all internal circuitry; must be routed with low-inductance connection to system ground plane. |
| VREG (Pin 7) | Internal regulator supply | Provides −1.8 V internal rail; bypassed with ≥1 μF capacitor to GND to maintain amplifier stability. |
| VIN (Pin 8) | Negative input supply | Accepts −2.0 V to −5.5 V; requires ≥4.7 μF ceramic capacitor to GND to limit input ripple and support transient response. |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow output noise | 4 μV rms (100 Hz–100 kHz) independent of output voltage-enables clean biasing of op-amps and ADC references without post-regulation filtering. |
| High PSRR up to 1 MHz | 75 dB at 10 kHz, 62 dB at 100 kHz, 40 dB at 1 MHz-effectively attenuates high-frequency noise from switchers and digital ICs. |
| Stable with small ceramics | Guaranteed stability with 4.7 μF X7R/X5R ceramic capacitors on input and output-reduces BOM count and PCB area vs. tantalum solutions. |
| Flexible enable interface | Supports both positive-logic (0.96–1.25 V high) and negative-logic (−1.3 V low) EN thresholds-simplifies integration with diverse host controllers. |
| Robust protection suite | Integrated current-limit (−600 mA typ.), thermal shutdown (150°C), and UVLO (−1.77 V rising)-prevents damage during fault conditions in unattended systems. |
Applications
| Medical Imaging Signal Chain | Industrial Precision Data Acquisition |
|---|---|
Use Scenario: Powering 24-bit delta-sigma ADCs and low-noise instrumentation amplifiers in portable ultrasound front-ends. IC Role / Device Role / Timing Role: Negative LDO providing ultraquiet −1.8 V reference and analog supply rail. Use Value: 4 μV rms noise prevents degradation of >110 dB SNR in high-resolution imaging paths. |
Use Scenario: Regulating sensor excitation and signal conditioning stages in programmable logic controller (PLC) analog I/O modules. IC Role / Device Role / Timing Role: Primary negative supply for precision op-amps and voltage references in isolated measurement channels. Use Value: ±2.6% output accuracy over −40°C to +125°C ensures calibrated measurement integrity across industrial temperature ranges. |
| Communications Baseband Processing | Test & Measurement Equipment |
Use Scenario: Supplying low-jitter clock buffers and high-speed DACs in 5G fronthaul radio units. IC Role / Device Role / Timing Role: Clean −1.8 V rail for mixed-signal ASICs requiring low-phase-noise clock distribution. Use Value: 75 dB PSRR at 10 kHz suppresses switching artifacts from adjacent DC/DC converters, preserving EVM performance. |
Use Scenario: Biasing low-noise preamplifiers and calibration references in benchtop spectrum analyzers and arbitrary waveform generators. IC Role / Device Role / Timing Role: Fixed-output LDO delivering stable −1.8 V to metrology-grade analog subsystems. Use Value: −130 mV dropout enables efficient use of −2.0 V intermediate rails, reducing thermal load in densely packed instruments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar negative-output LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT3015EDD-1.8#PBF | −1.8 V fixed, −500 mA max, 20 μV rms noise, 70 dB PSRR @ 10 kHz, 3 mm × 3 mm DFN | Higher output current but 5× higher noise; requires larger output cap (10 μF) for stability | Choose when higher load current is critical and noise <5 μV rms is not required. |
| TPS7A3301RGWR | −1.8 V fixed, −200 mA max, 12 μV rms noise, 65 dB PSRR @ 10 kHz, 2 mm × 2 mm WQFN | Lower current rating and higher noise; no adjustable option; simpler enable threshold | Choose for cost-sensitive designs where −200 mA suffices and layout space matches WQFN footprint. |
Compared with LT3015EDD-1.8#PBF and TPS7A3301RGWR, ADP7183ACPZN1.8-R7 delivers the lowest noise (4 μV rms) in the smallest 2 mm × 2 mm LFCSP package while maintaining −300 mA capability-making it optimal for space-constrained, high-SNR applications where thermal performance and PSRR above 100 kHz matter.
Availability
ADP7183ACPZN1.8-R7 is available at Aetrix Electronics and suitable for medical imaging signal chains, industrial precision data acquisition, communications baseband processing, and test & measurement equipment requiring stable component supply with guaranteed long-term availability.
Supply support for ADP7183ACPZN1.8-R7 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA.
The ADP7183ACPZN1.8-R7 belongs to Analog Devices' ultralow-noise LDO family, engineered specifically for powering noise-sensitive analog and mixed-signal circuits-including precision converters, amplifiers, and RF components-in medical, industrial, and communications systems.
FAQ
What is the maximum input voltage for the ADP7183ACPZN1.8-R7?
The ADP7183ACPZN1.8-R7 supports an input voltage range of −2.0 V to −5.5 V relative to ground. Absolute maximum rating is −6 V; operation beyond −5.5 V risks permanent damage. For reliable long-term use at −5.5 V, ensure thermal design maintains junction temperature ≤125°C under full −300 mA load.
Does the ADP7183ACPZN1.8-R7 require external resistors to set the output voltage?
No. The ADP7183ACPZN1.8-R7 is a fixed-output variant delivering −1.8 V without external resistors. Its internal feedback network is trimmed during manufacturing. Pins VAFB and R1/R2 connections are unused in this version-VAFB should be left unconnected or tied to VA per datasheet recommendations to minimize noise.
Can the ADP7183ACPZN1.8-R7 be used with ceramic capacitors only?
Yes. The ADP7183ACPZN1.8-R7 is explicitly characterized and guaranteed stable with 4.7 μF X7R or X5R ceramic capacitors on both input and output. Y5V and Z5U types are not recommended due to capacitance drift with voltage and temperature. No series resistance or electrolytic components are needed.
What is the shutdown current of the ADP7183ACPZN1.8-R7?
The ADP7183ACPZN1.8-R7 draws −2 μA typical shutdown current at VIN = −5.5 V, as specified in Table 1 of the Rev. B datasheet. This ultra-low quiescent draw makes it suitable for battery-backed systems or always-on monitoring circuits where standby power must remain below 15 μW.
How does the exposed pad (EP) connect internally in the ADP7183ACPZN1.8-R7?
The exposed pad of the ADP7183ACPZN1.8-R7 is electrically connected to VIN inside the package. Per Figure 3 and Table 5, it must be soldered to the input voltage plane on the PCB-not to GND or any other net-to ensure optimal thermal dissipation (θJA = 68.8°C/W) and electrical integrity.
ADP7183ACPZN1.8-R7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-UFDFN Exposed Pad, CSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Negative
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- -5.5V
- Voltage - Output (Min/Fixed):
- -1.8V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.22V @ 300mA
- Current - Output:
- 300mA
- Current - Quiescent (Iq):
- 900 µA
- Current - Supply (Max):
- 7 mA
- PSRR:
- 85dB ~ 40dB (1kHz ~ 1MHz)
- Control Features:
- Enable
- Protection Features:
- Current Limit, Thermal Overload
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-LFCSP (2x2)
ADP7183ACPZN1.8-R7 FAQ
1.How can I place an order for ADP7183ACPZN1.8-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADP7183ACPZN1.8-R7 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for ADP7183ACPZN1.8-R7 reliable?
The price and inventory of ADP7183ACPZN1.8-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADP7183ACPZN1.8-R7 is usually 5 days.
3.What payment methods are accepted for ADP7183ACPZN1.8-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP7183ACPZN1.8-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADP7183ACPZN1.8-R7?
ADP7183ACPZN1.8-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADP7183ACPZN1.8-R7 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for ADP7183ACPZN1.8-R7?
For technical support, including ADP7183ACPZN1.8-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP7183ACPZN1.8-R7 requirements.
6.How does Aetrix verify that ADP7183ACPZN1.8-R7 is sourced from the original manufacturer or authorized distributors?
All ADP7183ACPZN1.8-R7 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ADP7183ACPZN1.8-R7 meets industry standards.
7.What is the process for return or replacement of ADP7183ACPZN1.8-R7?
All ADP7183ACPZN1.8-R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADP7183ACPZN1.8-R7, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The ADP7183ACPZN1.8-R7 part is unused and in its original packaging.
Return procedure for ADP7183ACPZN1.8-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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