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AD876JST
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Product Detailed Parameters
- Description：IC ADC 10BIT 20MSPS CMOS 48TQFP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Bag
- Number of Bits：10
- Sampling Rate (Per Second)：20M
- Number of Inputs：-
- Input Type：-
- Data Interface：Parallel
- Configuration：-
- Ratio - S/H:ADC：-
- Number of A/D Converters：7
- Architecture：-
- Reference Type：-
- Voltage - Supply, Analog：-
- Voltage - Supply, Digital：-
- Features：-
- Operating Temperature：0°C ~ 70°C
- Package / Case：48-LQFP
- Supplier Device Package：48-LQFP (7x7)
- Mounting Type：Surface Mount
- Grade：-
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Overview
The AD876JST is a CMOS, 10-bit, 20 MSPS analog-to-digital converter (ADC) from Analog Devices. It features a multistage pipelined architecture with output error correction logic and an on-chip sample-and-hold amplifier. The device operates on a single +5 V supply with power dissipation of 160 mW. It guarantees no missing codes over the commercial temperature range (0°C to +70°C). Key specifications include a differential nonlinearity (DNL) of ±0.5 LSB, integral nonlinearity (INL) of ±1.0 LSB, and a signal-to-noise ratio (SNR) of 56 dB at 1 MHz input frequency. The digital I/Os are compatible with +5 V or +3.3 V logic via the DRVDD pin.
Feature Summary
- Multistage pipelined architecture with output error correction logic ensures accurate performance and guarantees no missing codes across the operating temperature range.
- On-chip sample-and-hold amplifier simplifies driving requirements for high-speed applications.
- Force and sense connections to reference inputs minimize external voltage drops for improved accuracy.
- Digital I/O interfaces support both +5 V and +3.3 V logic levels through the adjustable DRVDD supply.
Applications
- Charge coupled device (CCD) input systems such as color scanners and digital copiers
- Electronic still cameras and camcorders requiring low power and high speed
- High-speed data acquisition and communications systems
Procurement Notes
Verify the specific ordering suffix JST corresponds to the 48-lead Thin Quad Flatpack (TQFP) package in tape and reel format. Confirm the temperature grade J indicates the commercial range (0°C to +70°C). Ensure compatibility with existing PCB footprints for the TQFP-48 package before procurement.
Selection Notes
Select the AD876JST when a 10-bit resolution and 20 MSPS sampling rate are required with low power consumption. Consider this component for designs needing pin-compatible upgrades from 8-bit options or those requiring single-supply +5 V operation. Evaluate the need for force-sense reference connections if high DC accuracy is critical for the application.
Part Context
The AD876 series includes variants like the AD876JR (28-lead SOIC) and AD876AR (-40°C to +85°C industrial grade). The JST suffix specifically denotes the surface-mount TQFP package option within the commercial temperature range family. This part serves as a bridge between lower-resolution 8-bit converters and higher-performance video ADCs.
Replacement Considerations
The AD9200 is a pin-compatible alternative offering lower power dissipation (80 mW) but requires a 2.7 V to 5.5 V supply range. Verify that the reduced power and different supply requirements align with the system design before substitution.
