AD677JN - 16-Bit 100 kSPS Serial ADC | Analog Devices
MPN: AD677JN ⚠ Last Time Buy| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
AD677JN Overview
A sampling ADC is a data-acquisition IC that samples an analog voltage and converts it into a digital code. The AD677 belongs to the ADC -> data converter -> analog signal-processing -> semiconductor hierarchy. Its switched-capacitor and charge-redistribution architecture supports 16-bit resolution at 100 kSPS, making it appropriate for industrial measurement, instrumentation, and control systems. The manufacturer describes on-chip autocalibration as a way to digitally correct internal nonlinearities and improve overall conversion performance.
Key features include a 16-bit serial interface, a 100 kSPS sampling rate, an on-chip sample-and-hold circuit, and a stated full-power bandwidth of 1 MHz. The verified datasheet search result also identifies no missing codes, 99 dB THD, 92 dB S/(N+D), and a 10 µs conversion time. These figures describe the converter's acquisition and dynamic-performance capabilities, but exact signal-chain performance still depends on reference voltage, input amplitude, clocking, grounding, and PCB layout.
The AD677 operates from +5 V and +12 V analog supplies, with a separate digital supply identified as VDD. Verified source material reports typical conversion consumption of approximately 450 mW with a 10 V reference and 360 mW with a 5 V reference. The separate digital supply helps reduce digital crosstalk, while the analog-ground sense connection allows the converter to reference the signal-source ground remotely. Those features are important when the ADC is placed near a sensor or analog front end rather than in a central digital section.
Typical applications include industrial process monitoring, precision instrumentation, laboratory measurement, transducer acquisition, and embedded control systems. The serial output reduces parallel data-bus routing requirements, while autocalibration can simplify system-level accuracy planning. The principal design trade-off is that this older high-resolution ADC family is marked LAST TIME BUY, so new production designs should verify lifecycle availability, sourcing, and any applicable migration path before committing to the AD677JN.
For PCB implementation, place input, reference, analog-ground, and digital-supply connections according to the manufacturer datasheet and keep the analog signal path compact. The verified material identifies a remote analog-ground sense function; use it as intended rather than treating every ground connection as electrically identical. This page synthesizes the verified datasheet snippets, lifecycle status, sourcing context, and practical application guidance without inventing unprovided electrical limits or pin assignments.
Drop-in alternatives for AD677JN — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with AD677JN (same form factor and footprint) — differing in Package, Architecture, Interface, Sampling Rate.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
AD677AD
✅ Drop-In📋 Reference alternative (not in catalog)
AD677KD
✅ Drop-In📋 Reference alternative (not in catalog)
AD677KRZ
✅ Drop-In📋 Reference alternative (not in catalog)
AD677
✅ Drop-In📋 Reference alternative (not in catalog)
AD676TD/883B
✅ Drop-In✓ In Stock
$25 / Unit
View Datasheet →ADS8320E/2K5
✅ Drop-In✓ In Stock
$5.807 / Unit
View Datasheet →AD677JN Maximum Ratings & Electrical Characteristics
| Resolution | 16 bit |
| Conversion Rate | 100 kSPS |
| Total Conversion Time | 10 µs |
| Output Type | Serial output |
| Architecture | Switched-capacitor / charge-redistribution ADC |
| Sample-and-Hold | On-chip sample-and-hold function |
| Missing Codes | No missing codes |
| Full-Power Bandwidth | 1 MHz |
| Total Harmonic Distortion | -99 dB |
| Signal-to-Noise Plus Distortion | 92 dB |
| Analog Supply | +5 V and +12 V |
| Typical Power Consumption, 10 V Reference | 450 mW during conversion |
| Typical Power Consumption, 5 V Reference | 360 mW during conversion |
| Ground Sensing | Remote analog-ground sense |
| Autocalibration | On-chip autocalibration |
| Package | 16-pin narrow plastic DIP |
| Mounting Type | Through-hole |
AD677JN 16-pin narrow plastic dip Pin Configuration Guide
Pin configuration for AD677JN (16-pin narrow plastic dip package). This analog component features input, output, and power supply pins. Refer to the manufacturer datasheet for offset null, compensation, and enable pin configurations. Ideal for signal conditioning and amplifier circuits.
No detailed pinout data available for AD677JN.
Refer to the datasheet for full pin configuration.
Typical Applications
AD677JN is suitable for 6 applications: Industrial Process Measurement, Precision Instrumentation, Transducer and Sensor Acquisition, Audio and Communication Control, Embedded Control Systems, Data Acquisition and Monitoring.
Industrial Process Measurement
The AD677JN is appropriate for industrial process-monitoring systems that require 16-bit resolution and a moderate 100 kSPS acquisition rate. Its serial output can connect to a controller or measurement processor without routing a full parallel data bus across the board. The AD677's on-chip sample-and-hold function, autocalibration, and analog-ground sense can help preserve accuracy when the input comes from sensors or resistive bridges. Engineers should verify the operating-temperature range and analog input limits in the manufacturer datasheet before deployment.
Recommended
Precision Instrumentation
The AD677JN fits precision laboratory and test-instrument front ends that convert low-level analog measurements into serial digital data. Its stated 16-bit resolution, 92 dB S/(N+D), -99 dB THD, and 1 MHz full-power bandwidth provide useful starting points for instrumentation signal chains. The 100 kSPS rate is sufficient for many sensor and control-loop applications but is not aimed at high-bandwidth waveform capture. Use careful reference and grounding design to preserve the converter's noise performance.
Recommended
Transducer and Sensor Acquisition
The AD677JN can serve as the sampling ADC in transducer-acquisition systems where a sensor produces a slowly varying or moderate-bandwidth analog voltage. The 100 kSPS throughput supports frequent measurements while the on-chip sample-and-hold function helps isolate the external signal during conversion. The remote analog-ground sense is particularly relevant when the source ground may differ from the converter ground. Confirm the allowed input range and source-impedance limits from the datasheet before selecting external buffering.
Recommended
Audio and Communication Control
The AD677JN may be used in communication equipment or audio-control subsystems that require a moderate-rate, high-resolution serial ADC rather than an audio-class converter. Its serial interface can simplify communication with a digital controller, while the 100 kSPS rate is appropriate for control, monitoring, or envelope-related signals rather than wideband audio reproduction. The datasheet's stated dynamic-performance figures should be validated at the actual input level and bandwidth. Reference noise and clock jitter can dominate system performance.
Recommended
Embedded Control Systems
The AD677JN can be integrated into embedded measurement and control equipment where analog feedback must be digitized for a microcontroller or digital signal controller. Its serial output reduces the number of parallel data lines compared with a 16-bit parallel ADC, although the interface still requires a compatible receiver and clocking scheme. The 10 µs conversion time supports many control-loop update rates. Because the family is LAST TIME BUY, new embedded platforms should confirm supply continuity or select a currently supported ADC before committing.
Recommended
Data Acquisition and Monitoring
The AD677JN is applicable to data-acquisition modules that repeatedly sample analog channels and send results over a serial link. Its 16-bit code width and 100 kSPS rate are useful for monitoring temperature, pressure, position, and other slowly varying industrial quantities. The analog-ground sense feature can help manage ground offsets in distributed measurement systems, while autocalibration supports internal linearity correction. Channel switching, reference isolation, and long cable protection must be designed around the exact input and timing specifications in the datasheet.
Recommended
Recommended Products Summary
Engineering reference data for AD677JN — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | AD677AD | AD677KD | AD677KRZ | AD677 | AD676 |
|---|---|---|---|---|---|---|
| Package | 16-pin narrow plastic DIP | 16-pin narrow plastic DIP; verify exact package | 16-pin narrow plastic DIP; verify exact package | Related SOIC-28 option identified; not verified as same package | Family package options include narrow plastic DIP, ceramic DIP, and 28-lead SOIC | Parallel-output related family; package equivalence not verified |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Resolution | 16 bit | 16-bit family comparison; verify | 16-bit family comparison; verify | 16-bit related family; verify | 16 bit | Related parallel-output family; verify |
| Conversion Rate | 100 kSPS | AD677-family comparison; exact value verify | AD677-family comparison; exact value verify | AD677-family comparison; exact value verify | 100 kSPS | Related family; exact value verify |
| Output Interface | Serial output | Serial-output family comparison; verify | Serial-output family comparison; verify | Serial-output family comparison; verify | Serial output | Parallel output |
| Architecture | Switched-capacitor / charge-redistribution | AD677-family architecture; verify | AD677-family architecture; verify | AD677-family architecture; verify | Switched-capacitor / charge-redistribution | Related ADC; architecture not verified |
| Autocalibration | On-chip autocalibration | AD677-family feature; verify | AD677-family feature; verify | AD677-family feature; verify | On-chip autocalibration | Not verified |
| Supply Arrangement | +5 V and +12 V analog supplies with separate VDD | Family supply details; verify | Family supply details; verify | Family supply details; verify | +5 V and +12 V analog supplies with separate digital supply | Related family; supply details not verified |
| Lifecycle Status | LAST TIME BUY | Not verified | Not verified | Not verified | LAST TIME BUY | Not verified |
Key Differentiators
- 16-bit resolution with moderate-speed sampling (vs AD676)
- Serial-output architecture (vs AD677AD)
- On-chip sample-and-hold and autocalibration (vs AD677KD)
- Separate analog and digital supply organization (vs AD677KRZ)
Design Notes
Route the analog input, reference, analog ground, and remote ground-sense connections using the manufacturer datasheet layout guidance. The AD677 separates analog and digital supplies to reduce digital crosstalk, but separation is effective only when the PCB also separates the relevant current paths. Keep the ADC close to the conditioning circuitry and avoid sharing high-current digital return paths with the analog input reference.
Decouple the analog and digital supplies according to the AD677 datasheet, using the specified voltage and capacitance values rather than generic assumptions. Verified source material identifies typical conversion consumption of 450 mW with a 10 V reference and 360 mW with a 5 V reference. Treat those values as design context, not a universal power budget, and verify the actual operating mode, temperature, reference voltage, and digital-interface loading.
Do not confuse the AD677 family name with a guaranteed package-compatible substitute. The supplied comparison data includes AD677AD, AD677KD, AD677KRZ, AD676, and other related entries, but it does not verify pin-for-pin equivalence for each one. Check the exact suffix, package drawing, pin names, supply limits, input range, timing, and lifecycle status before using any replacement. The AD677 is LAST TIME BUY, making source verification especially important.
Protect the serial interface from noise and timing violations by using a controlled clock source, short traces, and a receiver that supports the AD677 output format. The 100 kSPS rate is moderate, but conversion timing still depends on acquisition, reference settling, and digital output behavior. Validate the interface with the manufacturer's timing diagrams and oscilloscope measurements before increasing cable length or adding intermediate digital circuitry.
Compliance Information
The supplied search results do not provide verified RoHS, REACH, lead-free, halogen-free, or conflict-minerals statements for AD677JN. AEC-Q100 is marked not_applicable because the supplied data does not identify AD677JN as an automotive-qualified device.
