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Analog Devices Inc. ADM8660ARZ-REEL
- Part No.:
- ADM8660ARZ-REEL
- Manufacturer:
- Analog Devices Inc.
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ADM8660ARZ-REEL.pdf
- Description:
- IC REG CHARGE PUMP 100MA 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,558
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Product details
Overview
ADM8660ARZ-REEL from Analog Devices is a CMOS switched-capacitor voltage inverter IC that generates a regulated negative output (–VIN) from a +1.5 V to +7 V input supply, delivers up to 100 mA output current, features shutdown control (SD pin), and operates at selectable 25 kHz or 120 kHz charge-pump frequency - used in portable op amp power supplies and handheld instrumentation.
For engineers reviewing the ADM8660ARZ-REEL datasheet, ADM8660ARZ-REEL pinout, ADM8660ARZ-REEL application, or ADM8660ARZ-REEL equivalent, key selection considerations include its inverting-only function (no doubling), 300 nA shutdown quiescent current, 9–15 Ω output resistance at 100 mA, TSSOP-compatible SOIC-8 package, and compatibility with 2.2 µF or 10 µF low-ESR external capacitors.
Technical Context
The ADM8660ARZ-REEL implements a two-phase switched-capacitor topology using internal MOSFET switches controlled by an on-chip oscillator. Its FC pin selects between 25 kHz (FC = GND) and 120 kHz (FC = V+) charge-pump operation, directly determining optimal external capacitor sizing (10 µF vs. 2.2 µF).
Unlike the ADM660, it replaces the OSC pin with SD (shutdown), enabling logic-controlled disablement that reduces supply current to 300 nA and forces OUT to 0 V. LV pin configures low-voltage operation (<3.5 V input), and output regulation relies on fixed-frequency charge transfer rather than feedback control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | +1.5 V to +7 V - supports single-supply systems requiring rail-to-rail negative bias generation. |
| Output Current | 100 mA - sufficient for dual-rail op amps, analog front-ends, and sensor signal conditioning stages. |
| Charge-Pump Frequency | 25 kHz or 120 kHz - selectable via FC pin; determines capacitor size, output impedance, and efficiency trade-offs. |
| Shutdown Quiescent Current | 300 nA - enables ultra-low-power sleep modes in battery-operated devices without external circuitry. |
| Output Resistance | 9–15 Ω at 100 mA - defines load regulation error and voltage droop under dynamic current demand. |
| Power Efficiency | ≥88.5% at 100 mA - ensures minimal thermal rise and extended battery life in portable applications. |
| Package | 8-Lead SOIC_N (R-8) - industry-standard footprint compatible with automated assembly and legacy board layouts. |
Pinout & Package
ADM8660ARZ-REEL is housed in an 8-lead narrow-body SOIC (R-8) package per JEDEC MS-012-AA, with 1.27 mm lead pitch, 4.90–5.10 mm body width, and 3.80–4.00 mm body length.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (FC) | Frequency Control Input | Logic-level input selecting 25 kHz (GND) or 120 kHz (V+) charge-pump operation; sets external capacitor value. |
| 2 (OUT) | Negative Output Terminal | Delivers inverted voltage (–VIN); connects to load return path; sinks up to 100 mA. |
| 3 (LV) | Low-Voltage Operation Control | Grounded for inputs <3.5 V to bypass internal regulator; improves efficiency and startup at 1.5 V. |
| 4 (SD) | Shutdown Control Input | Active-high logic input disabling charge pump; reduces IQ to 300 nA and forces OUT = 0 V. |
| 5 (V+) | Positive Supply Input | Accepts +1.5 V to +7 V input; powers internal oscillator, switches, and control logic. |
| 6 (CAP+) | Positive Charge-Pump Capacitor Node | Connects to positive terminal of C1; alternately charges/discharges during φ1/φ2 phases. |
| 7 (GND) | Power Ground Reference | System ground reference for V+, CAP–, and LV; must be low-impedance for stable inversion. |
| 8 (CAP–) | Negative Charge-Pump Capacitor Node | Connects to negative terminal of C1; transfers charge to C2 during φ2 to generate –VIN. |
Key Features
| Feature | Design Value |
|---|---|
| Inverting-only topology | Dedicated –VIN generation without doubling mode; simplifies design validation and BOM control. |
| Programmable charge-pump frequency | 25 kHz/120 kHz selection via FC pin enables optimization of capacitor size, EMI, and efficiency. |
| Logic-controlled shutdown | SD pin reduces quiescent current to 300 nA and eliminates output leakage - critical for battery runtime. |
| Low-voltage operation support | LV pin allows reliable startup and regulation down to +1.5 V input, extending usability in Li-ion and coin-cell systems. |
| SOIC-8 package compatibility | Pinout matches legacy ICL7660/MAX660 designs, enabling drop-in replacement without PCB revision. |
Applications
| Portable Instrumentation Power | Op Amp Dual-Rail Supply |
|---|---|
Use Scenario: Handheld multimeters and data loggers require isolated negative bias for precision ADC drivers and analog front-ends while operating from a single 3.7 V Li-ion cell. IC Role / Device Role / Timing Role: ADM8660ARZ-REEL acts as a compact, capacitor-based negative rail generator - replacing discrete charge pumps or inductor-based DC/DC converters. Use Value: Enables true bipolar signal acquisition with <±0.5% line regulation and <10 mV ripple at 50 mA load, minimizing calibration drift. | Use Scenario: Rail-to-rail op amps in portable audio codecs need symmetric ±2.5 V supplies from a 5 V system rail to avoid clipping and distortion. IC Role / Device Role / Timing Role: ADM8660ARZ-REEL provides the –2.5 V rail with fast transient response and no magnetic components - eliminating EMI concerns near sensitive analog paths. Use Value: Delivers 100 mA at –2.5 V with ≤15 Ω output resistance, ensuring <10 mV droop during 20 mA step loads and supporting THD <0.001%. |
| Remote Sensor Signal Conditioning | Battery-Powered Data Acquisition |
Use Scenario: Industrial temperature sensors with 4–20 mA outputs require negative bias for active current-loop receivers in field-mounted wireless nodes. IC Role / Device Role / Timing Role: ADM8660ARZ-REEL supplies –5 V to precision current-to-voltage amplifiers, enabling accurate 16-bit measurement resolution. Use Value: Maintains >90% efficiency across –40°C to +85°C, with shutdown reducing system standby current to <1 µA - extending 10-year battery life. | Use Scenario: Low-power environmental monitors use intermittent sampling; the system enters deep sleep between readings to conserve energy. IC Role / Device Role / Timing Role: ADM8660ARZ-REEL's SD pin synchronizes with MCU GPIO to disable the inverter during sleep, eliminating idle power loss. Use Value: Reduces average supply current from 600 µA to 300 nA during 99% duty-cycle sleep, cutting total energy consumption by 99.95%. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage inverter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX660CPA+ | No shutdown pin; 600 µA quiescent current; requires external timing capacitor for frequency control. | Lacks logic-controlled disable; unsuitable for ultra-low-power sleep modes. | Select when cost sensitivity outweighs shutdown requirement and layout allows external capacitor placement. |
| ICL7660CBAZ | Higher 1.2 mA quiescent current; no FC pin - fixed ~10 kHz frequency; 10 µF minimum capacitor requirement. | Lower efficiency at light loads; larger capacitor footprint; limited to 3 V–6 V input range. | Select only for legacy redesigns where pin compatibility is mandatory and power budget permits. |
Compared with MAX660CPA+ and ICL7660CBAZ, ADM8660ARZ-REEL offers superior power efficiency in active mode, 2000× lower shutdown current, programmable frequency for capacitor optimization, and guaranteed operation down to +1.5 V - making it the preferred choice for modern portable and battery-critical systems.
Availability
ADM8660ARZ-REEL is available at Aetrix Electronics and suitable for portable instrumentation, op amp dual-rail supplies, and remote sensor signal conditioning requiring stable component supply and RoHS-compliant packaging.
Supply support for ADM8660ARZ-REEL 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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The ADM8660ARZ-REEL belongs to Analog Devices' switched-capacitor voltage converter product line, designed specifically to replace inductor-based solutions in space-constrained, low-noise, and battery-powered applications where electromagnetic interference must be minimized.
FAQ
What is the maximum input voltage supported by the ADM8660ARZ-REEL?
The ADM8660ARZ-REEL supports an absolute maximum input voltage of +7.5 V, with recommended continuous operation from +1.5 V to +7 V. Operation above +7 V risks permanent damage. The device maintains stable inverting performance across this full range, including tight regulation at 1.5 V when LV is grounded - a key capability distinguishing it from older charge-pump ICs like the ICL7660.
Does the ADM8660ARZ-REEL support voltage doubling functionality?
No, the ADM8660ARZ-REEL does not support voltage doubling. It is strictly an inverting converter (VOUT = –VIN). Doubling capability is exclusive to the ADM660 family. The ADM8660ARZ-REEL replaces the OSC pin with SD (shutdown), confirming its dedicated inverter role. Attempting doubling configurations will result in incorrect or no output.
How does the FC pin affect external capacitor selection for the ADM8660ARZ-REEL?
The FC pin directly determines optimal external capacitor values: FC = GND selects 25 kHz operation and requires 10 µF capacitors, while FC = V+ selects 120 kHz and allows reduction to 2.2 µF. Both C1 and C2 must be low-ESR electrolytic types (<0.2 Ω). Using mismatched values degrades efficiency and increases output ripple - verified in ADM8660ARZ-REEL typical performance curves TPC 4 and TPC 12.
What is the shutdown exit time for the ADM8660ARZ-REEL?
The ADM8660ARZ-REEL requires approximately 500 µs to stabilize its output voltage after exiting shutdown (SD transitioning from high to low). This timing is measured under 100 mA load and reflects the time needed for the internal oscillator and charge-transfer cycle to re-establish regulation. During this period, output voltage ramps linearly from 0 V to the final –VIN level.
Can the ADM8660ARZ-REEL operate from a 1.8 V supply?
Yes, the ADM8660ARZ-REEL is fully specified to operate from +1.5 V to +7 V. At 1.8 V input, LV must be connected to GND to bypass the internal regulator and ensure reliable startup and regulation. This configuration is validated in the datasheet's "Inverting Negative Voltage Generator" section and confirmed by TPC 1 (supply current vs. voltage) and TPC 3 (output voltage drop).
ADM8660ARZ-REEL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Ratiometric
- Output Configuration:
- Negative
- Topology:
- Charge Pump
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 1.5V
- Voltage - Input (Max):
- 7V
- Voltage - Output (Min/Fixed):
- -Vin
- Voltage - Output (Max):
- -
- Current - Output:
- 100mA
- Frequency - Switching:
- 25kHz, 120kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
ADM8660ARZ-REEL FAQ
1.How can I place an order for ADM8660ARZ-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM8660ARZ-REEL 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 ADM8660ARZ-REEL reliable?
The price and inventory of ADM8660ARZ-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM8660ARZ-REEL is usually 5 days.
3.What payment methods are accepted for ADM8660ARZ-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM8660ARZ-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADM8660ARZ-REEL?
ADM8660ARZ-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM8660ARZ-REEL 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 ADM8660ARZ-REEL?
For technical support, including ADM8660ARZ-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM8660ARZ-REEL requirements.
6.How does Aetrix verify that ADM8660ARZ-REEL is sourced from the original manufacturer or authorized distributors?
All ADM8660ARZ-REEL 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 ADM8660ARZ-REEL meets industry standards.
7.What is the process for return or replacement of ADM8660ARZ-REEL?
All ADM8660ARZ-REEL units undergo pre-shipment inspection (PSI). If there is an issue with ADM8660ARZ-REEL, 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 ADM8660ARZ-REEL part is unused and in its original packaging.
Return procedure for ADM8660ARZ-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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