Part A
AD7683ARMZ
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 4105 個数
- Package
- MSOP-8
- Series
- データ取得 - アナログ/デジタルコンバータ (ADC)
Replacement verdict
Compatible functional replacement candidate
The AD7683ARMZ and AD7680ARM-REEL are both 16-bit successive-approximation ADCs from Analog Devices in the same 8-lead MSOP package, sharing a comparable serial interface and supply range, so the AD7680ARM-REEL can serve as a functional replacement candidate for the AD7683ARMZ in many designs. However, the two parts differ in sample rate, input configuration, and reference architecture, so the replacement must be validated against the target application's timing, signal-conditioning, and accuracy requirements before adoption.
Resolution and Sample Rate
Validation required
Input Configuration
Validation required
Package Type
High match
Reference Architecture
Validation required
Parts at a glance
Part B
AD7680ARM-REEL
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 2486 個数
- Package
- TSSOP-8
- Series
- データ取得 - アナログ/デジタルコンバータ (ADC)
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD7683ARMZ | AD7680ARM-REEL | Why it matters |
|---|---|---|---|
| Resolution | 16 bits | 16 bits | Both are 16-bit ADCs, so resolution is equivalent and not a differentiator for substitutability. |
| Sampling Rate | 100 kSPS | 100 kSPS | Identical throughput means either part can meet the same acquisition timing requirements. |
| Architecture | SAR | SAR | Both use successive-approximation register architecture, giving similar latency and no pipeline delay. |
| Input Type | Pseudo-differential, single-ended | Single-ended | The AD7683 supports a pseudo-differential input that can reject common-mode noise, while the AD7680 is strictly single-ended; this affects signal-chain design and noise immunity. |
| Supply Voltage | 2.7 V to 5.5 V | 2.5 V to 5.5 V | The AD7680 can operate at a slightly lower minimum supply, which may matter in low-voltage systems. |
| Interface | SPI/QSPI/MICROWIRE/DSP compatible | SPI/QSPI/MICROWIRE/DSP compatible | Both use the same serial interface, so digital host connectivity is interchangeable. |
| Package | 10-lead MSOP | 8-lead MSOP | Different pin counts and footprints mean the PCB layout must be redesigned; they are not drop-in replacements. |
| Pin Count | 10 | 8 | Differing pin counts confirm the two devices are not footprint-compatible and require separate board designs. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Identical temperature ratings mean both suit the same industrial operating environments. |
Need help validating a replacement?
Send your BOM and application constraints for technical and sourcing review.
Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD7683ARMZ | AD7680ARM-REEL |
|---|---|---|
| Supplier | - | Analog Devices Inc. |
| Series | PulSAR® | PulSAR® |
| Part Status | Active | Obsolete |
| Number of Bits | 16 | 16 |
| Sampling Rate(Per Second) | 100k | 100k |
| Number of Inputs | 1 | 1 |
| Input Type | Pseudo-Differential | Single Ended |
| Data Interface | SPI, DSP | SPI, DSP |
| Configuration | S/H-ADC | S/H-ADC |
| Ratio - S / H: ADC | 1:1 | 1:1 |
| Number of A/D Converters | 1 | 1 |
| Architecture | SAR | SAR |
| Reference Type | External | Supply |
| Voltage - Supply, Analog | 2.7V ~ 5.5V | 2.5V ~ 5.5V |
| Voltage - Supply, Digital | 2.7V ~ 5.5V | 2.5V ~ 5.5V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
Frequently asked questions
What are the key differences between the AD7683ARMZ and the AD7680ARM-REEL?
The AD7683ARMZ is a 16-bit, 100 kSPS PulSAR analog-to-digital converter with a pseudo-differential input, while the AD7680ARM-REEL is a 16-bit, 100 kSPS successive-approximation ADC with a single-ended input. Both are offered in an 8-lead MSOP package, but they differ in input configuration, serial interface timing, and reference architecture. The AD7683ARMZ uses an external reference, whereas the AD7680ARM-REEL also requires an external reference but features a different SPI/QSPI-compatible serial interface and power-down behavior. Designers should consult the respective datasheets for exact timing and configuration differences.
Are the AD7683ARMZ and AD7680ARM-REEL pin-compatible?
Both devices are packaged in an 8-lead MSOP (RM suffix), but pin compatibility must be verified against the manufacturer pinouts. The AD7683ARMZ and AD7680ARM-REEL have different pin functions, including differences in analog input, reference, and digital interface pins. They should not be treated as drop-in replacements without confirming the pinout and associated external component connections in the respective datasheets.
What is the resolution and throughput of each device?
Both the AD7683ARMZ and the AD7680ARM-REEL are 16-bit ADCs with a maximum throughput of 100 kSPS. The AD7683ARMZ is specified for 100 kSPS with a pseudo-differential input, and the AD7680ARM-REEL is specified for 100 kSPS with a single-ended input. These parameters are verified from the Analog Devices datasheets for each part.
What analog input configuration does each ADC support?
The AD7683ARMZ supports a pseudo-differential input configuration, allowing it to measure the difference between an input signal and a reference-level input. The AD7680ARM-REEL supports a single-ended input configuration referenced to ground. This difference affects how each ADC is driven and how common-mode noise is handled in the signal chain.
What serial interface do these ADCs use?
Both the AD7683ARMZ and the AD7680ARM-REEL provide an SPI/QSPI/MICROWIRE/DSP-compatible serial interface for connection to microcontrollers and digital signal processors. The exact timing, clock polarity, and data format differ between the two parts, so the interface timing diagrams in the respective Analog Devices datasheets must be followed during firmware and hardware design.
What is the difference in power consumption between the AD7683ARMZ and AD7680ARM-REEL?
Both devices are designed for low-power operation and include power-down modes between conversions. The AD7683ARMZ and AD7680ARM-REEL have similar low-power characteristics at 100 kSPS, but the exact supply current and power-down current specifications differ and should be taken from the respective Analog Devices datasheets rather than assumed to be identical.
Can the AD7683ARMZ and AD7680ARM-REEL share the same external reference and supply voltages?
Both ADCs require an external reference and operate from a single supply, but the specified reference voltage range and supply voltage range must be verified individually from each datasheet. The AD7683ARMZ and AD7680ARM-REEL are not guaranteed to have identical reference or supply requirements, so the system design should confirm that the chosen reference and supply meet the specifications of the specific part being used.
Which part should be selected for a single-ended versus pseudo-differential measurement?
For a single-ended measurement referenced to ground, the AD7680ARM-REEL is the appropriate choice because it is specified with a single-ended input. For applications requiring a pseudo-differential measurement, such as rejecting common-mode noise or measuring a small differential signal riding on a reference level, the AD7683ARMZ is the appropriate choice. Selection should be based on the signal chain requirements and confirmed against the Analog Devices datasheets.