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Analog Devices Inc. ADM660ARZ-REEL
- Part No.:
- ADM660ARZ-REEL
- Manufacturer:
- Analog Devices Inc.
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ADM660ARZ-REEL.pdf
- Description:
- IC REG CHRG PUMP INV 100MA 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:8,507
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Product details
Overview
ADM660ARZ-REEL from Analog Devices is a CMOS switched-capacitor voltage inverter/doubler IC that generates –VIN or 2×VIN from +1.5 V to +7 V input. It delivers up to 100 mA output current with ≤0.3 V dropout at 30 mA, selectable 25 kHz/120 kHz charge-pump frequency, and 600 µA quiescent current. It serves as a compact negative rail generator in op amp power supplies and portable instrumentation.
For engineers reviewing the ADM660ARZ-REEL datasheet, ADM660ARZ-REEL pinout, ADM660ARZ-REEL application, or ADM660ARZ-REEL equivalent, key selection criteria include inverting/doubling mode support, SOIC-8 package compatibility, low-ESR capacitor requirements (2.2 µF or 10 µF), shutdown absence (vs. ADM8660), and pin-compatibility with legacy MAX660/ICL7660 designs.
Technical Context
The ADM660ARZ-REEL implements a two-phase switched-capacitor topology with internal oscillator control via FC and OSC pins. Its dual-mode operation-voltage inversion (VOUT = –VIN) and doubling (VOUT = 2×VIN)-is determined by LV pin configuration and external component routing. The device uses charge transfer between two external capacitors (C1, C2) under antiphase φ1/φ2 clocking to achieve regulated conversion without inductors.
Frequency selection is implemented through FC pin logic (Open = 25 kHz, V+ = 120 kHz) and OSC pin flexibility: external capacitor tuning or CMOS clock overdrive (OSC frequency ÷ 2 = charge-pump frequency). LV pin enables low-voltage operation below 3.5 V by bypassing internal regulation, preserving efficiency down to +1.5 V input.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | +1.5 V to +7 V - supports single-supply systems requiring negative rails or boosted voltages without external regulators. |
| Output Current | 100 mA - sufficient for biasing dual op amps, ADC reference buffers, or small analog signal chains. |
| Charge-Pump Frequency | 25 kHz or 120 kHz - selects capacitor size: 10 µF (low-frequency, low-quiescent) or 2.2 µF (high-frequency, lower impedance). |
| Quiescent Current | 0.6 mA typical - enables battery-powered portables where standby power matters, though no shutdown function is present. |
| Output Resistance | 9 Ω to 15 Ω at 100 mA - defines load regulation error; lower values reduce voltage droop under dynamic loads. |
| Power Efficiency | ≥90% at 1 mA–50 mA loads - maintains high conversion efficiency across light-to-moderate output currents. |
| Voltage Conversion Mode | Invert (–VIN) and Double (2×VIN) - dual functionality eliminates need for separate inverter/doubler ICs in space-constrained designs. |
Pinout & Package
ADM660ARZ-REEL is housed in an 8-lead narrow-body SOIC (R-8) package per JEDEC MS-012-AA, with 1.27 mm pitch, 4.90 mm × 3.90 mm body, and 1.75 mm max height. Thermal resistance θJA = 120°C/W enables operation up to +85°C ambient with moderate PCB copper.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 (FC) | Frequency Control Input | Selects internal oscillator frequency: Open = 25 kHz, V+ = 120 kHz - determines optimal external capacitor value and ripple performance. |
| 2 (OUT) | Output Terminal | Delivers inverted (–VIN) or doubled (+2VIN) voltage depending on LV and external circuit configuration. |
| 3 (LV) | Low-Voltage Operation Control | Connect to GND for inputs <3.5 V to bypass regulator; leave open for direct ICL7660 drop-in replacement above 3.5 V. |
| 4 (OSC) | Oscillator Control Input | Accepts external capacitor (tuning) or CMOS clock (overdrive); sets precise charge-pump frequency independent of FC. |
| 5 (V+) | Positive Power Supply Input | Primary input rail; also serves as output in doubler mode - requires local 0.1 µF bypass capacitor. |
| 6 (CAP+) | Positive Charge-Pump Capacitor Terminal | Connects to positive plate of C1; switching node critical for charge transfer integrity and EMI control. |
| 7 (GND) | Ground Reference | System ground return; must be low-impedance path shared with C1/C2 grounds to minimize noise coupling. |
| 8 (CAP–) | Negative Charge-Pump Capacitor Terminal | Connects to negative plate of C1; forms charge-transfer loop with CAP+ and internal switches. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-mode voltage conversion | Single IC supports both inverting (–VIN) and doubling (2×VIN) topologies - reduces BOM count and board area vs. dedicated converters. |
| Selectable charge-pump frequency | 25 kHz or 120 kHz via FC pin - enables trade-off between capacitor size (10 µF vs. 2.2 µF) and output impedance (lower at higher frequency). |
| Low-quiescent-current operation | 0.6 mA typical supply current - extends battery life in handheld instruments and remote sensors without shutdown capability. |
| Pin-compatible upgrade path | Direct replacement for MAX660, MAX665, ICL7660, LTC1046 - simplifies legacy design refresh with no layout changes required. |
| Low-ESR capacitor optimization | Specified with <0.2 Ω ESR electrolytics - ensures ≥90% efficiency and minimal output ripple; high-ESR caps degrade regulation and thermal performance. |
Applications
| Op Amp Dual-Rail Supply | Portable Data Acquisition |
|---|---|
Use Scenario: Generating ±5 V rails from a single +5 V battery supply to power precision op amps in handheld test equipment. IC Role / Device Role / Timing Role: Voltage inverter providing stable –5 V output referenced to system ground, enabling rail-to-rail input/output swing. Use Value: Eliminates need for bulky inductor-based DC/DC converters; achieves <0.3 V dropout at 30 mA load for tight regulation. | Use Scenario: Powering isolated analog front-ends in battery-operated environmental sensors logging temperature and humidity. IC Role / Device Role / Timing Role: Negative voltage source for sensor biasing and ADC reference generation in low-power, intermittent-sampling systems. Use Value: 0.6 mA quiescent current preserves battery life; 100 mA peak output supports transient amplifier loads during sampling bursts. |
| Handheld Instrumentation | Remote Industrial Monitoring |
Use Scenario: Providing clean –3.3 V supply for LCD bias and analog signal conditioning in portable multimeters and oscilloscopes. IC Role / Device Role / Timing Role: Compact inverter delivering regulated negative rail with minimal external components (only two capacitors required). Use Value: SOIC-8 footprint fits dense PCB layouts; 2.2 µF capacitor option at 120 kHz reduces solution size vs. legacy 10 µF designs. | Use Scenario: Enabling isolated RS-485 transceivers and signal-conditioning circuits in unattended field nodes powered by solar-charged batteries. IC Role / Device Role / Timing Role: Voltage doubler stepping +3.6 V Li-ion battery to +7.2 V for high-side gate drivers and level-shifting interfaces. Use Value: Doubler mode supports >2.5 V input range; 9–15 Ω output resistance ensures stable output under 50 mA load steps. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX660CPA+ | Same SOIC-8 package, 100 mA output, but lacks OSC pin flexibility and has higher 1.5 mA quiescent current. | No external clock overdrive or fine capacitor tuning - limited to fixed 25 kHz/120 kHz modes only. | Choose MAX660CPA+ only if OSC functionality is unused and legacy MAX660 footprint compliance is mandatory. |
| ICL7660CBAZ | SOIC-8, inverting-only (no doubling), 50 mA output, 1.2 mA quiescent current, no FC/OSC control - basic function set. | Cannot generate doubled voltage; lower output current limits use in higher-power analog stages. | Choose ICL7660CBAZ for cost-sensitive, low-current inverter-only applications where doubling is unnecessary. |
Compared with MAX660CPA+ and ICL7660CBAZ, ADM660ARZ-REEL provides superior design flexibility via OSC pin programmability, dual-mode operation, and lower quiescent current - making it optimal for new designs requiring compact, efficient, and adaptable voltage conversion.
Availability
ADM660ARZ-REEL is available at Aetrix Electronics and suitable for handheld instrumentation, portable data acquisition, and op amp power supplies requiring stable component supply, RoHS-compliant packaging, and industrial temperature range (–40°C to +85°C) operation.
Supply support for ADM660ARZ-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 precision instrumentation, industrial automation, and communications markets.
The ADM660 product line delivers compact, inductorless voltage conversion for space- and power-constrained systems - designed specifically for portable, battery-powered, and low-noise analog applications demanding clean auxiliary rails.
FAQ
Does ADM660ARZ-REEL support voltage doubling mode?
Yes, ADM660ARZ-REEL supports voltage doubling (VOUT = 2×VIN) when configured with LV tied to OUT and input applied to GND. This mode operates with input voltages from +2.5 V to +7 V and delivers up to 100 mA output. The ADM8660 variant does not support doubling - only inversion - making ADM660ARZ-REEL uniquely capable among its family.
What is the recommended capacitor value for ADM660ARZ-REEL at 120 kHz operation?
For 120 kHz charge-pump operation, ADM660ARZ-REEL requires 2.2 µF low-ESR (<0.2 Ω) electrolytic capacitors for both C1 and C2. Using 10 µF capacitors at this frequency increases output impedance unnecessarily; conversely, using 2.2 µF at 25 kHz causes excessive ripple and reduced efficiency. Always verify capacitor ESR per datasheet TPC 9–11.
Can ADM660ARZ-REEL replace ICL7660 in existing designs?
Yes, ADM660ARZ-REEL is pin-compatible with ICL7660 in SOIC-8 (R-8) package and functions as a direct upgrade. When LV is left open and FC is unconnected, it matches ICL7660's 25 kHz operation and inverting behavior. It adds doubling mode, lower quiescent current (0.6 mA vs. 1.2 mA), and OSC pin flexibility - all without requiring PCB changes.
Does ADM660ARZ-REEL include a shutdown function?
No, ADM660ARZ-REEL does not include a shutdown input. That feature is exclusive to the ADM8660 variant (SD pin). ADM660ARZ-REEL draws 0.6 mA quiescent current continuously - suitable for always-on applications but not ultra-low-power sleep modes. For shutdown capability, select ADM8660ARZ-REEL instead.
What is the maximum output current specification for ADM660ARZ-REEL?
The ADM660ARZ-REEL is rated for 100 mA continuous output current in both inverting and doubling configurations. At this load, output resistance is 9–15 Ω (depending on temperature), resulting in ≤1.5 V dropout. Efficiency remains ≥80% at 100 mA, dropping to ≥90% at lighter loads (1–50 mA), as confirmed in the datasheet's TPC 2 and TPC 6.
ADM660ARZ-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:
- Positive or 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, 2Vin
- 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
ADM660ARZ-REEL FAQ
1.How can I place an order for ADM660ARZ-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM660ARZ-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 ADM660ARZ-REEL reliable?
The price and inventory of ADM660ARZ-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM660ARZ-REEL is usually 5 days.
3.What payment methods are accepted for ADM660ARZ-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM660ARZ-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADM660ARZ-REEL?
ADM660ARZ-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM660ARZ-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 ADM660ARZ-REEL?
For technical support, including ADM660ARZ-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM660ARZ-REEL requirements.
6.How does Aetrix verify that ADM660ARZ-REEL is sourced from the original manufacturer or authorized distributors?
All ADM660ARZ-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 ADM660ARZ-REEL meets industry standards.
7.What is the process for return or replacement of ADM660ARZ-REEL?
All ADM660ARZ-REEL units undergo pre-shipment inspection (PSI). If there is an issue with ADM660ARZ-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 ADM660ARZ-REEL part is unused and in its original packaging.
Return procedure for ADM660ARZ-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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