Part A
AD976ARZ
아날로그 디바이스(주)
- Lifecycle
- Active
- Stock
- 1637 PCS
- Package
- SOIC-28
- Series
- 데이터 수집 - 아날로그 변환기(ADC)
Replacement verdict
Compatible functional replacement candidate
The AD976ARZ and AD976ABR are functionally interchangeable 16-bit parallel CMOS analog-to-digital converters sharing identical resolution, architecture, and pinout; the AD976ABR offers a tighter grade-level linearity specification, making it a suitable drop-in candidate where the AD976ARZ grade is acceptable or where improved INL/DNL performance is beneficial.
Resolution and Architecture
High match
Package and Pinout
High match
Supply and Interface
High match
Linearity Grade
Validation required
Parts at a glance
Part B
AD976ABR
아날로그 디바이스(주)
- Lifecycle
- Active
- Stock
- 4083 PCS
- Package
- SOIC-28
- Series
- 데이터 수집 - 아날로그 변환기(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 | AD976ARZ | AD976ABR | Why it matters |
|---|---|---|---|
| Resolution | 16 bits | 16 bits | Both parts share the same resolution, so conversion granularity is identical. |
| Sampling Rate | 100 kSPS | 100 kSPS | Identical throughput means either part supports the same system timing budget. |
| INL (Integral Nonlinearity) | ±2.0 LSB max | ±1.0 LSB max | The ABR grade offers tighter linearity, which directly improves absolute accuracy in precision measurement applications. |
| DNL (Differential Nonlinearity) | ±1.0 LSB max | ±1.0 LSB max | Equal DNL guarantees no missing codes for both grades, preserving monotonicity. |
| Grade / Accuracy Class | A grade (standard linearity) | B grade (improved linearity) | The grade determines guaranteed linearity limits; the B grade is the higher-precision bin and may be required where error budget is tight. |
| Package / Case | 28-Lead SOIC (R-28) | 28-Lead SOIC (R-28) | Same package footprint allows drop-in board replacement without layout changes. |
| Operating Temperature Range | -40°C to +85°C | -40°C to +85°C | Identical temperature ratings mean both parts suit the same industrial environments. |
| Supply Voltage | 5 V (single supply) | 5 V (single supply) | Same supply requirement ensures power design compatibility between the two parts. |
| Interface Type | Parallel (16-bit word) | Parallel (16-bit word) | Identical parallel interface means the same digital host and timing can drive either device. |
| Power Consumption | 100 mW typ | 100 mW typ | Equivalent power draw keeps thermal and supply sizing unchanged when substituting parts. |
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 | AD976ARZ | AD976ABR |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| Number of Bits | 16 | 16 |
| Sampling Rate(Per Second) | 100k | 200k |
| Number of Inputs | 1 | 1 |
| Input Type | Single Ended | Single Ended |
| Data Interface | Parallel | Parallel |
| 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, Internal | External, Internal |
| Voltage - Supply, Analog | 5V | 5V |
| Voltage - Supply, Digital | 5V | 5V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
Frequently asked questions
What are the key differences between the AD976ARZ and AD976ABR?
Both are 16-bit, 100 kSPS successive-approximation ADCs from Analog Devices in a 28-lead SOIC package. The primary difference is the grade: the AD976ARZ is specified for operation over the −40°C to +85°C industrial temperature range, while the AD976ABR is specified over the 0°C to +70°C commercial temperature range. The "Z" suffix on AD976ARZ denotes RoHS-compliant lead-free construction, whereas the AD976ABR is the non-RoHS lead-frame version.
Are the AD976ARZ and AD976ABR pin-compatible?
Yes. Both devices are offered in the same 28-lead SOIC (R-28) package with identical pin assignments, so they are pin-compatible and share the same PCB land pattern.
Can the AD976ARZ be used as a drop-in replacement for the AD976ABR?
Electrically and mechanically they are interchangeable, but the substitution must be validated against the target design. The AD976ARZ is rated over the wider −40°C to +85°C range and is RoHS-compliant, while the AD976ABR is limited to 0°C to +70°C and is non-RoHS. Confirm that the wider temperature specification and lead-free assembly process are acceptable for the application before substituting.
What are the resolution and sampling rate of the AD976ARZ and AD976ABR?
Both parts are 16-bit successive-approximation analog-to-digital converters with a maximum throughput of 100 kSPS.
What analog input range do the AD976ARZ and AD976ABR support?
Both devices accept a bipolar analog input of ±10 V, configured through the on-chip input scaling resistors.
What digital interface do the AD976ARZ and AD976ABR provide?
Both converters provide a parallel 16-bit output with a standard microprocessor-compatible interface, including chip-select, read, and convert-start control signals.
Do the AD976ARZ and AD976ABR differ in power consumption?
No. Both devices are specified with the same typical power dissipation of approximately 100 mW from a +5 V analog supply and a +5 V digital supply, since they share the same core design and differ only in grade and packaging finish.
Which part should be selected for an industrial-temperature design?
The AD976ARZ should be selected for designs requiring operation down to −40°C and up to +85°C, since the AD976ABR is only specified over the 0°C to +70°C commercial range.