AD7490 16-Channel, 1MSPS, 12-Bit ADC with Sequencer in 28-Lead TSSOP
The AD7490 is a 12-bit high speed, low power, successive- approximation ADC. The part operates from a single 2.7 V to 5.25 V power supply and features throughput rates up to 1 MSPS. The part contains a low-noise, wide bandwidth track/hold amplifier that can handle input frequencies in excess of 1 MHz.
The conversion process and data acquisition are controlled using CS and the serial clock, allowing the device to interface with microprocessors or DSPs. The input signal is sampled on the falling edge of CS and conversion is also initiated at this point. There are no pipeline delays associated with the part.
The AD7490 uses advanced design techniques to achieve very low power dissipation at high throughput rates. For maximum throughput rates, the AD7490 consumes just 1.8 mA with 3 V supplies, and 2.5 mA with 5 V supplies.
By setting the relevant bits in the control register, the analog input range for the part can be selected to be a 0 V to REFIN input or a 0 V to 2 × REFIN input, with either straight binary or twos complement output coding. The AD7490 features 16 single-ended analog inputs with a channel sequencer to allow a preprogrammed selection of channels to be converted sequen-tially. The conversion time is determined by the SCLK or twos complement output coding. The AD7490 features 16 single-ended analog inputs with a channel sequencer to allow a preprogrammed selection of channels to be converted sequen-tially. The conversion time is determined by the SCLK.
The AD7490-EP supports defense and aerospace applications (AQEC)
Features and Benefits- Fast Throughput Rate: 1 MSPS
- Specified for VDD of 2.7 V-5.25 V
- Low power at maximum throughput rates
- 16 (single-ended) inputs with sequencer
- Wide input bandwidth 69.5 dB SNR at 50 kHz input frequency
- See data sheet for additional features
- Download AD7490-EP Data Sheet (pdf)
- Military temperature range
(−55°C to +125°C) - Controlled manufacturing baseline
- One assembly/test site
- One fabrication site
- Enhanced product change notification
- Qualification data available on request
- V62/12635 DSCC Drawing Number
| Software & Systems Requirements |
Data Sheets
Application Notes
User Guides
Technical Books
Order Information
| Part Number | Package | Packing Qty | Temp Range | Price 100-499 | Price 1000+ | RoHS |
|---|
| AD7490BCPZ Production | 32 ld LFCSP (5x5mm) | OTH 490 | -40 to 85C | 7.08 | 6.02 | Y |
| AD7490BCPZ-REEL7 Production | 32 ld LFCSP (5x5mm) | REEL 1500 | -40 to 85C | 0 | 6.02 | Y |
| AD7490BRU Production | 28 ld TSSOP (4.4mm) | OTH 50 | -40 to 85C | 8.18 | 6.96 | N |
| AD7490BRU-REEL7 Contact ADI | 28 ld TSSOP (4.4mm) | REEL 1000 | -40 to 85C | 0 | 0 | N |
| AD7490BRUZ Production | 28 ld TSSOP (4.4mm) | OTH 50 | -40 to 85C | 7.08 | 6.02 | Y |
| AD7490BRUZ-REEL Production | 28 ld TSSOP (4.4mm) | REEL 2500 | -40 to 85C | 0 | 6.02 | Y |
| AD7490BRUZ-REEL7 Production | 28 ld TSSOP (4.4mm) | REEL 1000 | -40 to 85C | 0 | 6.02 | Y |
| AD7490SRU-EP-RL7 Production | 28 ld TSSOP (4.4mm) | REEL 1000 | -55 to 125C | 0 | 11.84 | N |
Evaluation Boards
| Part Number | Description | Price | RoHS |
|---|
| EVAL-AD7490SDZ | Evaluation Board | 59 | Y |
| EVAL-SDP-CB1Z | Evaluation Controller Board | 99 | Y |
Reference Materials
