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Analog Devices Inc. ADM660ANZ
- Part No.:
- ADM660ANZ
- Manufacturer:
- Analog Devices Inc.
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
ADM660ANZ.pdf
- Description:
- IC REG CHRG PUMP INV 100MA 8PDIP
- Quantity:
- Payment:
- Shipping:
Inventory:245
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Product details
Overview
ADM660ANZ 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, delivers up to 100 mA output current, features selectable 25 kHz/120 kHz charge-pump frequency, and operates across –40°C to +85°C for handheld instruments and op amp power supplies.
For engineers reviewing the ADM660ANZ datasheet, ADM660ANZ pinout, ADM660ANZ application, or ADM660ANZ equivalent, key selection considerations include inverting vs. doubling mode support, FC-controlled frequency selection, LV pin configuration for low-voltage operation, quiescent current (0.6 mA typ), and compatibility with 2.2 µF or 10 µF external capacitors.
Technical Context
The ADM660ANZ implements a two-phase switched-capacitor topology using internal MOSFET switches controlled by an on-chip oscillator. It supports both inverting (VOUT = –VIN) and doubling (VOUT = 2×VIN) configurations via LV pin routing-LV tied to OUT enables doubling; LV tied to GND or left open enables inversion.
Frequency control is achieved via the FC pin (25 kHz at open, 120 kHz at V+), while the OSC pin allows external capacitor or clock control of oscillator frequency-critical for optimizing ESR-sensitive capacitor sizing and ripple performance. Output resistance is 9–15 Ω at 100 mA load, and efficiency exceeds 90% at 1 mA–50 mA loads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | +1.5 V to +7 V; supports single-supply systems needing negative rails or boosted voltages. |
| Output Current | 100 mA max; sufficient for biasing op amps, ADCs, and small analog signal chains. |
| Charge-Pump Frequency | Selectable 25 kHz or 120 kHz; determines optimal external capacitor size (10 µF or 2.2 µF) and output impedance. |
| Quiescent Current | 0.6 mA typical; enables low-power portable operation without shutdown circuitry. |
| Output Resistance | 9–15 Ω at 100 mA; defines voltage drop under load and impacts regulation stability. |
| Efficiency | >90% at 1–50 mA loads; drops to ~81.5% at full 100 mA, guiding thermal and battery-life design. |
| Operating Temperature | –40°C to +85°C industrial grade; validated for embedded instrumentation and remote DAQ environments. |
Pinout & Package
ADM660ANZ is housed in an 8-lead plastic dual-in-line package (PDIP, N-8), 0.3-inch body width, with through-hole mounting and JEDEC MS-001 compliance. Pin 1 is marked by notch or dot; leads are tin-lead (Pb-free per Z suffix).
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 (FC) | Frequency Control Input | Selects charge-pump frequency: open = 25 kHz, V+ = 120 kHz; sets capacitor sizing and ripple trade-offs. |
| 2 (OUT) | Output Terminal | Delivers inverted (–VIN) or doubled (+2VIN) voltage depending on LV pin configuration. |
| 3 (LV) | Low-Voltage Mode Select | Tied to OUT for doubling; tied to GND or left open for inversion; enables <3.5 V operation. |
| 4 (OSC) | Oscillator Control Input | Accepts external capacitor or clock; overrides FC; doubles external clock frequency as charge-pump rate. |
| 5 (V+) | Positive Supply Input | Primary input rail; also serves as output in doubling mode; must be bypassed with ≥0.1 µF capacitor. |
| 6 (CAP+) | Positive Charge-Pump Node | Connects to positive terminal of C1; forms flying capacitor path during charge-transfer phase. |
| 7 (GND) | Ground Reference | System ground return; used as reference for LV and output in inverter mode. |
| 8 (CAP–) | Negative Charge-Pump Node | Connects to negative terminal of C1; completes flying capacitor loop with CAP+ and internal switches. |
Key Features
| Feature | Design Value |
|---|---|
| Inverting and doubling modes | Single IC supports dual topologies-eliminates need for separate inverter/doubler parts in multi-rail designs. |
| Selectable 25 kHz / 120 kHz operation | Enables optimization between capacitor size (10 µF vs. 2.2 µF) and output impedance without changing layout. |
| LV pin for low-voltage enable | Allows stable operation down to +1.5 V input by bypassing internal regulator-critical for coin-cell or Li-ion systems. |
| External oscillator interface (OSC) | Permits precise frequency control or synchronization to system clock-reduces EMI in noise-sensitive applications. |
| Pin-compatible upgrade path | Direct replacement for MAX660, MAX665, ICL7660, and LTC1046-enables drop-in reliability and performance improvement. |
Applications
| Handheld Instruments | Portable Computers |
|---|---|
Use Scenario: Battery-powered multimeters and oscilloscopes requiring ±5 V rails from a single 3.7 V Li-ion cell. IC Role / Device Role / Timing Role: ADM660ANZ generates –3.7 V rail for analog front-end op amps and ADC reference buffers. Use Value: Enables true bipolar signal acquisition without adding a second battery or DC/DC converter-reducing BOM count and PCB area. | Use Scenario: Subnotebook LCD bias supply needing +10 V from 5 V system rail. IC Role / Device Role / Timing Role: ADM660ANZ operates in doubling mode (LV = OUT) to produce +10 V at up to 50 mA for TFT gate drivers. Use Value: Achieves >90% efficiency at light loads-extending runtime versus inductive boost converters with higher quiescent loss. |
| Remote Data Acquisition | Op Amp Power Supplies |
Use Scenario: Solar-powered environmental sensor node with RS-485 transceiver requiring –5 V for level-shifting. IC Role / Device Role / Timing Role: ADM660ANZ inverts 3.3 V MCU rail to –3.3 V, conditioned via RC filter for clean RS-485 common-mode range. Use Value: Eliminates need for isolated DC/DC; low 0.6 mA quiescent current preserves energy harvesting margin. | Use Scenario: Precision instrumentation amplifier stage needing dual ±15 V rails from +5 V microcontroller supply. IC Role / Device Role / Timing Role: ADM660ANZ configured as inverter (LV = GND) produces –5 V, fed to LDO for regulated –15 V output. Use Value: Provides low-noise, capacitor-based negative rail-avoiding switching noise coupling into sensitive analog signal paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage conversion applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX660CPA+ | Same 8-pin PDIP package; 100 mA output; fixed 25 kHz frequency only; no OSC pin; higher 1.5 mA quiescent current. | Lacks frequency selectability and external oscillator-limits capacitor optimization and EMI control in dense layouts. | Choose when legacy compatibility is mandatory and 25 kHz operation suffices; avoid if 120 kHz or clock sync is needed. |
| ICL7660CPEZ | 8-pin PDIP; inverting-only; 20 mA max output; 1.4 mA quiescent current; no FC or OSC pins; requires ≥10 µF capacitors. | Not suitable for doubling mode or >20 mA loads; lacks frequency control-higher output impedance and ripple at same capacitance. | Select only for ultra-low-cost, low-current inverter needs where efficiency and flexibility are secondary. |
Compared with MAX660CPA+ and ICL7660CPEZ, ADM660ANZ offers superior design flexibility via dual-mode operation, selectable frequency, and external oscillator support-enabling optimized capacitor sizing, lower output impedance, and better efficiency across wider load and temperature ranges.
Availability
ADM660ANZ is available at Aetrix Electronics and suitable for handheld instruments, portable computers, and remote data acquisition systems requiring stable component supply, long-term industrial temperature support, and RoHS-compliant packaging.
Supply support for ADM660ANZ 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 ADM660ANZ belongs to Analog Devices' switched-capacitor voltage converter product line, designed specifically for compact, low-noise, inductorless power rail generation in space-constrained and battery-sensitive applications.
FAQ
What is the primary function of the ADM660ANZ?
The ADM660ANZ is a CMOS switched-capacitor voltage converter that functions as either an inverter (VOUT = –VIN) or doubler (VOUT = 2×VIN) depending on LV pin configuration. It accepts +1.5 V to +7 V input, delivers up to 100 mA output, and operates across –40°C to +85°C. Its dual-mode capability makes ADM660ANZ ideal for generating auxiliary rails in portable and instrumentation systems without inductors.
How does the FC pin affect ADM660ANZ operation?
The FC (Frequency Control) pin on ADM660ANZ selects the internal charge-pump frequency: open circuit yields 25 kHz, while connection to V+ raises it to 120 kHz. This directly determines optimal external capacitor values-10 µF at 25 kHz or 2.2 µF at 120 kHz-and impacts output impedance and ripple. The FC pin has no effect when OSC is driven externally.
Can ADM660ANZ be used in voltage doubling mode, and what is required?
Yes, ADM660ANZ supports voltage doubling mode. To enable it, the LV pin must be connected to the OUT pin, and the input supply is applied to GND while V+ becomes the positive output. Input voltage must be between +2.5 V and +7 V. Note that ADM8660 cannot perform doubling-this is a key functional distinction confirmed in the ADM660/ADM8660 datasheet.
What are the recommended external capacitors for ADM660ANZ?
For ADM660ANZ, use low-ESR electrolytic or tantalum capacitors: 10 µF for 25 kHz operation (FC open) and 2.2 µF for 120 kHz (FC = V+). Both C1 (flying) and C2 (output) should match in value and ESR (<0.2 Ω). High-ESR capacitors degrade efficiency, increase output resistance, and raise ripple-verified in TPC 9 and TPC 14 of the ADM660/ADM8660 datasheet.
Is ADM660ANZ pin-compatible with older industry-standard parts?
Yes, ADM660ANZ is explicitly specified as a pin-compatible upgrade for MAX660, MAX665, ICL7660, and LTC1046 in the ADM660/ADM8660 datasheet. It retains identical 8-lead PDIP (N-8) pinout and basic functionality while adding FC frequency selection, OSC flexibility, and improved efficiency-making ADM660ANZ a direct drop-in replacement with enhanced performance.
ADM660ANZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- 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:
- Through Hole
- Supplier Device Package:
- 8-PDIP
ADM660ANZ FAQ
1.How can I place an order for ADM660ANZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM660ANZ 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 ADM660ANZ reliable?
The price and inventory of ADM660ANZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM660ANZ is usually 5 days.
3.What payment methods are accepted for ADM660ANZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM660ANZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADM660ANZ?
ADM660ANZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM660ANZ 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 ADM660ANZ?
For technical support, including ADM660ANZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM660ANZ requirements.
6.How does Aetrix verify that ADM660ANZ is sourced from the original manufacturer or authorized distributors?
All ADM660ANZ 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 ADM660ANZ meets industry standards.
7.What is the process for return or replacement of ADM660ANZ?
All ADM660ANZ units undergo pre-shipment inspection (PSI). If there is an issue with ADM660ANZ, 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 ADM660ANZ part is unused and in its original packaging.
Return procedure for ADM660ANZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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