AD7177-2 32-Bit, 10 kSPS, Sigma-Delta ADC with 100 µs Settling and True Rail-to-Rail Buffers
The AD7177-2 is a 32-bit low noise, fast settling, multiplexed,
2-/4-channel (fully/pseudo differential) Σ-Δ analog-to-digital
converter (ADC) for low bandwidth inputs. It has a maximum
channel scan rate of 10 kSPS (100 µs) for fully settled data. The
output data rates range from 5 SPS to 10 kSPS.
The AD7177-2 integrates key analog and digital signal conditioning
blocks to allow users to configure an individual setup for
each analog input channel in use. Each feature can be user selected
on a per channel basis. Integrated true rail-to-rail buffers on the
analog inputs and external reference inputs provide easy to drive
high impedance inputs. The precision 2.5 V low drift (2 ppm/°C)
band gap internal reference (with output reference buffer) adds
embedded functionality to reduce external component count.
The digital filter allows simultaneous 50 Hz and 60 Hz rejection
at a 27.27 SPS output data rate. The user can switch between
different filter options according to the demands of each
channel in the application. The ADC automatically switches
through each selected channel. Further digital processing
functions include offset and gain calibration registers,
configurable on a per channel basis.
The device operates with a 5 V AVDD1 supply, or with ±2.5 V
AVDD1/AVSS, and 2 V to 5 V AVDD2 and IOVDD supplies.
The specified operating temperature range is −40°C to +105°C.
The AD7177-2 is available in a 24-lead TSSOP package.
Applications
Features and Benefits32-bit data outputFast and flexible output rate: 5 SPS to 10 kSPSChannel scan data rate of 10 kSPS/channel (100 µs settling)Performance specifications19.1 noise free bits at 10 kSPS20.2 noise free bits at 2.5 kSPS24.6 noise free bits at 5 SPSINL: ±1 ppm of FSR85 dB filter rejection of 50 Hz and 60 Hz with 50 ms settlingUser configurable input channels2 fully differential channels or 4 single-ended channelsCrosspoint multiplexerOn-chip 2.5 V reference (±2 ppm/°C drift)True rail-to-rail analog and reference input buffersInternal or external clockSee data sheet for additional features | IBIS ModelsDesign ToolsReference DesignsSoftware & Systems Requirements |
Data Sheets
User Guides
Technical Books
Order Information
| Part Number | Package | Packing Qty | Temp Range | Price 100-499 | Price 1000+ | RoHS |
|---|
| AD7177-2BRUZ Production | 24 ld TSSOP | OTH 62 | -40 to 105C | 15.68 | 14.65 | Y |
| AD7177-2BRUZ-RL7 Production | 24 ld TSSOP | REEL 1000 | -40 to 105C | 0 | 14.65 | Y |
Evaluation Boards
| Part Number | Description | Price | RoHS |
|---|
| EVAL-AD7177-2SDZ | Evaluation Board | 59 | Y |
| EVAL-SDP-CB1Z | SDP Controller Board | 99 | Y |
Reference Materials
