Features: Single 3 V supply operation (2.7 V to 3.6 V)
SNR = 72.7 dBc to Nyquist
SFDR = 87.6 dBc to Nyquist
Low power: 366 mW
Differential input with 500 MHz bandwidth
On-chip reference and sample-and-hold
DNL = ± 0.5 LSB
Flexible analog input: 1 V p-p to 2 V p-p range
Offset binary or twos complement data format
Clock duty cycle stabilizer
ApplicationHigh end medical imaging equipment
IF sampling in communications receivers:WCDMA, CDMA-One, CDMA-2000, TDS-CDMA
Battery-powered instruments
Hand-held scopemeters
Low cost digital oscilloscopes
Power sensitive military applications Pinout
Specifications
| Resolution (Bits) |
14bit |
| T-Put Rate |
80MSPS |
| # Chan |
1 |
| Supply V |
Single(+3),Single(+3.3) |
| Pwr Diss |
414mW |
| Interface |
Par |
| Ain Range |
(2Vref) p-p,1 V p-p,2 V p-p |
| SNR (dB) |
73.3dB |
| Pkg Type |
CSP |
AVDD AGND 0.3 +3.9 V
DRVDD DGND 0.3+3.9 V
AGND DGND 0.3 +0.3 V
AVDD DRVDD 3.9 +3.9V DescriptionThe AD9245 is a monolithic, single 3 V supply, 14-bit, 80 MSPS analog-to-digital converter featuring a high performance sample-and-hold amplifier (SHA) and voltage reference. The AD9245 uses a multistage differential pipelined architecture with output error correction logic to provide 14-bit accuracy at
80 MSPS and guarantee no missing codes over the full operating temperature range.
The wide bandwidth, truly differential SHA allows a variety of user-selectable input ranges and common modes, including single-ended applications. It is suitable for multiplexed systems that switch full-scale voltage levels in successive channels, and for sampling single-channel inputs at frequencies well beyond the Nyquist rate. Combined with power and cost savings over previously available analog-to-digital converters, the AD9245 is suitable for applications in communications, imaging, and medical ultrasound. A single-ended clock input is used to control all internal conversion cycles. A duty cycle stabilizer (DCS) compensates for wide variations in the clock duty cycle while maintainingexcellent overall ADC performance. The digital output data is
presented in straight binary or twos complement formats. An out-of-range (OTR) signal indicates an overflow condition that can be used with the most significant bit to determine low or high overflow. Fabricated on an advanced CMOS process, the AD9245 is available in a 32-lead LFCSP and is specified over the industrial temperature range (40°C to +85°C).
AD9245 Data Sheet
