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Analog Devices Inc. AD7660ACPZRL
- Part No.:
- AD7660ACPZRL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 48-VFQFN Exposed Pad, CSP
- Datasheet:
-
AD7660ACPZRL.pdf
- Description:
- IC ADC 16BIT SAR 48LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:2,944
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Product details
Overview
AD7660ACPZRL from Analog Devices is a 16-bit, 100 kSPS unipolar successive-approximation ADC with charge redistribution architecture, single 5 V supply operation, ±3 LSB INL, 87 dB SNR at 10 kHz, and dual serial/parallel interface - used in precision data acquisition for battery-powered instrumentation and medical instruments.
For engineers reviewing the AD7660ACPZRL datasheet, AD7660ACPZRL pinout, AD7660ACPZRL application, or AD7660ACPZRL equivalent, key selection factors include its no-pipeline-delay conversion, 0 V to 2.5 V analog input range, 21 mW typical power at full throughput, LFCSP-48 package compatibility, and SPI/QSPI/MICROWIRE interface support.
Technical Context
The AD7660ACPZRL implements a charge redistribution SAR architecture with internal error correction circuitry and factory calibration for both AC (SNR, THD) and DC (INL, DNL, gain/offset) parameters. It uses a 16-bit capacitive DAC array with dummy capacitor for differential sampling of IN–INGND.
Conversion is initiated by CNVST falling edge after 8 ms acquisition time; BUSY goes high during conversion and falls upon data latch into shift register. Aperture jitter is 5 ps rms, and transient response to full-scale step is 8 µs - enabling multiplexed multi-channel systems without latency artifacts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit with no missing codes - guarantees monotonicity and full code coverage for precision measurement. |
| Throughput Rate | 100 kSPS maximum - supports real-time sampling of signals up to ~45 kHz Nyquist bandwidth. |
| INL | ±3 LSB max - corresponds to ±0.0046% FSR error, enabling <12-bit effective linearity over full scale. |
| SNR | 87 dB min @ 10 kHz - delivers ~14.2 ENOB for clean digitization of low-noise sensor outputs. |
| Analog Input Range | 0 V to 2.5 V (unipolar) - requires external 2.5 V reference (e.g., ADR291) and matches standard precision voltage references. |
| Power Dissipation | 21 mW typical @ 100 kSPS - scales with throughput; drops to 21 µW @ 100 SPS for ultra-low-power sleep modes. |
| Interface Modes | Parallel (16-bit D[15:0]) or 2-wire serial (SDOUT/SCLK/SYNC) - compatible with 3 V or 5 V logic, SPI/QSPI/MICROWIRE/DSP. |
Pinout & Package
AD7660ACPZRL is housed in a 48-lead Lead Frame Chip Scale Package (LFCSP), RoHS-compliant, with exposed pad connected to ground (not required for spec compliance). Package dimensions: 7 mm × 7 mm × 0.85 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN / INGND | Differential analog input pair | Simultaneously sampled inputs enable common-mode rejection; IN accepts 0–2.5 V, INGND serves as reference return. |
| REF / REFGND | External reference interface | Accepts 2.3–2.5 V external reference; REFGND must be tied to AGND for stable reference biasing. |
| CNVST | Conversion start trigger | Falling-edge–initiated hold-and-convert; low-jitter timing critical for <5 ps aperture jitter performance. |
| BUSY | Conversion status indicator | Active-high signal asserts for 2 ms conversion time; falling edge serves as data-ready strobe. |
| SER/PAR | Interface mode select | LOW = parallel 16-bit D[15:0] output; HIGH = serial mode repurposes D4–D11 as SDOUT/SCLK/SYNC/SDIN. |
| OB/2C | Output coding control | HIGH = straight binary (0x0000 = 0 V); LOW = twos complement (0x8000 = 0 V, 0x0000 = –FSR/2). |
Key Features
| Feature | Design Value |
|---|---|
| No pipeline delay | Immediate data availability after BUSY deassertion - eliminates latency in closed-loop control and real-time triggering. |
| Single-supply 5 V operation | Eliminates need for dual ±5 V rails; AVDD/DVDD/OVDD all operate from same 4.75–5.25 V source with independent ground pins. |
| Low power-down current | ≤7 mW max in PD mode - enables microamp-level system sleep states while retaining configuration and reference bias. |
| Dual interface flexibility | Hardware-selectable SER/PAR avoids firmware rework when migrating between compact serial or high-speed parallel host interfaces. |
| Factory-calibrated AC/DC performance | Guaranteed SNR ≥87 dB and INL ≤±3 LSB across –40°C to +85°C - reduces system-level calibration overhead. |
Applications
| Portable Medical ECG Monitor | Industrial Process Sensor Hub |
|---|---|
Use Scenario: Digitizing low-amplitude, high-impedance biopotential signals (e.g., 0.5–5 mV ECG) with >80 dB CMRR against 50/60 Hz mains interference. IC Role / Device Role / Timing Role: Primary unipolar ADC capturing conditioned analog front-end output; uses IN–INGND differential sampling and internal track-and-hold. Use Value: 87 dB SNR and 70 dB CMRR at 25 kHz ensure diagnostic-grade waveform fidelity; 21 mW power enables >24-hour battery life in handheld units. |
Use Scenario: Simultaneous sampling of multiple 4–20 mA loop sensors (pressure, temperature, flow) in PLC I/O modules with cold-junction compensation. IC Role / Device Role / Timing Role: High-accuracy SAR ADC interfaced via parallel bus to ARM Cortex-M7 MCU; CNVST synchronized to multiplexer switching. Use Value: ±3 LSB INL and no missing codes guarantee traceable metrology compliance; 100 kSPS throughput supports 10+ channels at ≥10 kSPS each. |
| PCMCIA Data Acquisition Card | Battery-Powered Test Equipment |
Use Scenario: Compact, hot-pluggable DAQ card for laptop-based field testing requiring low EMI, minimal board space, and 3.3 V logic compatibility. IC Role / Device Role / Timing Role: ADC core operating in serial mode (SPI) with OVDD = 3.3 V; OB/2C set for twos complement output to match DSP processor format. Use Value: LFCSP-48 footprint saves >40% PCB area vs. LQFP; 3 V–5 V interface tolerance eliminates level-shifter components. |
Use Scenario: Handheld multimeter or insulation tester needing autoranging, low-noise DC voltage measurement with 16-bit resolution and sub-µV sensitivity. IC Role / Device Role / Timing Role: Precision unipolar ADC referenced to ADR291 2.5 V source; power-down mode activated between measurements to extend battery life. Use Value: 21 µW standby power at 100 SPS enables >1-year battery operation; 0.0046% FSR INL meets Class 0.02 accuracy requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7664ASTZ | Pin-to-pin compatible; 18-bit resolution, 800 kSPS, higher power (45 mW), requires 2.5 V reference. | Used where higher resolution and speed justify increased cost and thermal load - e.g., high-end oscilloscopes. | Select AD7664ASTZ only if 18-bit ENOB and >100 kSPS throughput are mandatory; AD7660ACPZRL remains optimal for cost/power-constrained 16-bit designs. |
| ADS8860IPWR | 16-bit, 1 MSPS, SPI-only interface, 1.8 V supply, lower power (1.6 mW), no parallel port or OB/2C coding option. | Targeted at ultra-low-power, high-speed embedded systems with modern low-voltage MCUs - not suitable for legacy 5 V parallel buses. | Choose ADS8860IPWR for new 1.8 V designs prioritizing speed and energy efficiency; AD7660ACPZRL retains advantage in mixed-voltage industrial systems requiring interface flexibility. |
Compared with AD7664ASTZ and ADS8860IPWR, AD7660ACPZRL uniquely balances 100 kSPS throughput, dual-interface capability, 5 V compatibility, and 21 mW power - making it the most versatile choice for retrofitting legacy instrumentation and battery-operated portable test gear.
Availability
AD7660ACPZRL is available at Aetrix Electronics and suitable for data acquisition, battery-powered instrumentation, and PCMCIA-based measurement systems requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for AD7660ACPZRL 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, headquartered in Norwood, MA, with design centers worldwide and over 50 years of precision converter innovation.
The AD7660ACPZRL belongs to Analog Devices' PulSAR® family of precision SAR ADCs, engineered for applications demanding high resolution, low power, and flexible digital interfacing - especially in portable, industrial, and medical measurement equipment.
FAQ
What is the reference voltage requirement for AD7660ACPZRL?
The AD7660ACPZRL requires an external precision reference voltage between 2.3 V and 2.5 V applied to the REF pin, with REFGND tied to AGND. A 2.5 V reference (e.g., ADR291 or AD780) yields optimal 0 V to 2.5 V unipolar input range and ensures full 16-bit linearity per datasheet specifications. Reference current draw is 22 µA at 100 kSPS.
Does AD7660ACPZRL support true differential input?
No, AD7660ACPZRL does not support true differential input. It features a pseudo-differential architecture where IN and INGND are simultaneously sampled to reject common-mode noise, but the input range remains unipolar (0 V to VREF). For true bipolar or fully differential operation, consider AD7663 or AD7665 instead of AD7660ACPZRL.
Can AD7660ACPZRL operate with a 3.3 V digital interface?
Yes, AD7660ACPZRL supports 3.3 V digital logic through its OVDD pin, which accepts 2.7 V to 5.25 V. When OVDD = 3.3 V, digital outputs (D[15:0], BUSY, RD, etc.) swing between 0 V and 3.3 V, and inputs (CS, RD, SER/PAR) recognize 2.0 V as VIH minimum - enabling direct connection to 3.3 V FPGAs or microcontrollers without level shifters.
What is the significance of the OB/2C pin on AD7660ACPZRL?
The OB/2C pin on AD7660ACPZRL selects output coding format: HIGH configures straight binary (0x0000 = 0 V, 0xFFFF = VREF − 1.5 LSB); LOW enables twos complement (0x8000 = 0 V, 0x0000 = −VREF/2). This allows seamless integration with DSPs or processors expecting signed integer formats without software bit manipulation for AD7660ACPZRL data reads.
How does power consumption scale with throughput in AD7660ACPZRL?
AD7660ACPZRL power scales nearly linearly with sample rate: 21 mW typical at 100 kSPS, dropping to 21 µW at 100 SPS. In power-down mode (PD = HIGH), consumption falls to ≤7 mW regardless of throughput. This dynamic scaling makes AD7660ACPZRL highly efficient for burst-mode or event-triggered acquisition where average sample rate is low.
AD7660ACPZRL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- PulSAR®
- Package/Case:
- 48-VFQFN Exposed Pad, CSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Number of Bits:
- 16
- Sampling Rate (Per Second):
- 100k
- Number of Inputs:
- 1
- Input Type:
- Pseudo-Differential
- Data Interface:
- SPI, Parallel, DSP
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External
- Voltage - Supply, Analog:
- 5V
- Voltage - Supply, Digital:
- 5V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 48-LFCSP-VQ (7x7)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD7660ACPZRL FAQ
1.How can I place an order for AD7660ACPZRL through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7660ACPZRL 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 AD7660ACPZRL reliable?
The price and inventory of AD7660ACPZRL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7660ACPZRL is usually 5 days.
3.What payment methods are accepted for AD7660ACPZRL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7660ACPZRL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7660ACPZRL?
AD7660ACPZRL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7660ACPZRL 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 AD7660ACPZRL?
For technical support, including AD7660ACPZRL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7660ACPZRL requirements.
6.How does Aetrix verify that AD7660ACPZRL is sourced from the original manufacturer or authorized distributors?
All AD7660ACPZRL 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 AD7660ACPZRL meets industry standards.
7.What is the process for return or replacement of AD7660ACPZRL?
All AD7660ACPZRL units undergo pre-shipment inspection (PSI). If there is an issue with AD7660ACPZRL, 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 AD7660ACPZRL part is unused and in its original packaging.
Return procedure for AD7660ACPZRL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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