DDC2256AZZF
Active256-CHANNEL HEXADECIMAL ADC DELTA-SIGMA 17KSPS 24-BIT SERIAL 323-PIN NFBGA TRAY
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DDC2256AZZF
Active256-CHANNEL HEXADECIMAL ADC DELTA-SIGMA 17KSPS 24-BIT SERIAL 323-PIN NFBGA TRAY
Technical Specifications
Parameters and characteristics for this part
| Specification | DDC2256AZZF |
|---|---|
| Architecture | Sigma-Delta |
| Configuration | DSI-ADC |
| Data Interface | Serial, LVDS - Serial |
| Features | Simultaneous Sampling |
| Input Type | Single Ended |
| Mounting Type | Surface Mount |
| Number of A/D Converters | 64 |
| Number of Bits | 24 |
| Number of Inputs | 256 |
| Operating Temperature [Max] | 70 °C |
| Operating Temperature [Min] | 0 °C |
| Package / Case | 323-LFBGA |
| Ratio - S/H:ADC | 4:1 |
| Reference Type | External |
| Sampling Rate (Per Second) | 17 k per second |
| Supplier Device Package | 323-NFBGA (16x14) |
| Voltage - Supply, Analog | 2.5 V, 1.8 V |
| Voltage - Supply, Digital | 1.8 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Tray | 1 | $ 411.03 | |
| 10 | $ 361.79 | |||
| 25 | $ 374.18 | |||
| Texas Instruments | JEDEC TRAY (5+1) | 1 | $ 335.74 | |
| 100 | $ 303.90 | |||
| 250 | $ 295.22 | |||
| 1000 | $ 289.43 | |||
Description
General part information
DDC2256A Series
The DDC2256A is a 24-bit, 256-channel, current-input analog-to-digital (A/D) converter. It combines both current-to-voltage integration and A/D conversion so that 256 individual low-level current output devices, such as photodiodes, can be directly connected to its inputs and digitized in parallel (simultaneously).
For each of the inputs, the DDC2256A has one low noise/low power integrator designed to capture all the charge from the sensor. The integration time is adjustable from 58.8μs to 100 ms, allowing currents from fA to µA to be continuously measured with outstanding precision. The outputs of the integrators are digitized by sixteen 24-bit low power ADCs and all the resulting data is output over a single LVDS serial interface pair designed to minimize noise coupling in environments with high channel count.
The DDC2256A operates from ±2.5-V analog supply, 1.8-V analog supply (AVDD_18) and 1.8-V digital supply (DVDD). The device is specified from 0°C to 70°C operating temperature and available in a 14 × 16 mm2323-ball 0.8 mm-pitch BGA. Finally, the on board reference buffer and bypass capacitors help minimize the external component requirements and further reduce board space.
Documents
Technical documentation and resources