Features: Fast throughput rate: 250 kSPS Specified for VDD of 2.35 V to 5.25 V Low power: 4 mW typ at 250 kSPS with 3 V supplies 13.5 mW typ at 250 kSPS with 5 V supplies Wide input bandwidth: 71 dB minimum SNR at 100 kHz input frequency Flexible power/serial clock speed management No pipeline del...
AD7911: Features: Fast throughput rate: 250 kSPS Specified for VDD of 2.35 V to 5.25 V Low power: 4 mW typ at 250 kSPS with 3 V supplies 13.5 mW typ at 250 kSPS with 5 V supplies Wide input bandwidth: 71 dB...
SeekIC Buyer Protection PLUS - newly updated for 2013!
268 Transactions
All payment methods are secure and covered by SeekIC Buyer Protection PLUS.
Resolution (Bits) | 10bit |
T-Put Rate | 250kSPS |
# Chan | 2 |
Supply V | Single(+2.5),Single(+3),Single(+3.3),Single(+5) |
Pwr Diss | 20mW |
Interface | Ser,SPI |
Ain Range | Uni Vdd |
SNR (dB) | n/a |
Pkg Type | SOP,SOT |
Parameter | Rating |
VDD to GND Analog Input Voltage to GND Digital Input Voltage to GND Digital Output Voltage to GND Input Current to Any Pin except Suppl Operating Temperature Range Commercial (A Grade) Storage Temperature Range Junction Temperature TSOT Package JA Thermal Impedance MSOP Package JA Thermal Impedance JC Thermal Impedance Lead Temperature Soldering Reflow (10 s to 30 s) ESD |
-0.3 V to +7 V -0.3 V to VDD + 0.3 V -0.3 V to +7 V -0.3 V to VDD + 0.3 V ±10 mA -40°C to +85°C -65°C to +150°C 150°C 207°C/W 205.9°C/W 43.74°C/W 235 (0/+5)°C 2 kV |
The AD7911/AD7921 are 10-bit and 12-bit, high speed, low power, 2-channel successive approximation ADCs, respectively. The parts operate from a single 2.35 V to 5.25 V power supply nd feature throughput rates of up to 250 kSPS. The parts ontain a low noise, wide bandwidth track-and-hold amplifier, which can handle input frequencies in excess of 6 MHz. The onversion process and data acquisition are controlled using CS nd the serial clock, allowing the devices to interface with microprocessors or DSPs. The input signal is sampled on the alling edge of CS, and the conversion is also initiated at this point. There are no pipeline delays associated with the part.
The channel to be converted is selected through the DIN pin, nd the mode of operation is controlled by CS. The serial data tream from the DOUT pin has a channel identifier bit, which provides information about the converted channel.
The AD7911/AD7921 use advanced design techniques to achieve very low power dissipation at high throughput rates. The reference for the part is taken internally from VDD, thereby allowing the widest dynamic input range to the ADC. The analog input range for the part, therefore, is 0 to VDD. The conversion rate is determined by the SCLK signal.