AD9203ARU Analog Devices Inc, AD9203ARU Datasheet - Page 19

• Manufacturer Part Number: AD9203ARU
• Description: ADC Single Pipelined 40MSPS 10-Bit Parallel 28-Pin TSSOP
• Manufacturer: Analog Devices Inc

Specifications of AD9203ARU

• Package: 28TSSOP
• Resolution: 10 Bit
• Sampling Rate: 40 MSPS
• Architecture: Pipelined
• Number Of Analog Inputs: 1
• Digital Interface Type: Parallel
• Input Type: Voltage
• Signal To Noise Ratio: 60(Typ) dB
• Rohs Status: RoHS non-compliant
• Number Of Bits: 10
• Sampling Rate (per Second): 40M
• Data Interface: Parallel
• Number Of Converters: 5
• Power Dissipation (max): 108mW
• Voltage Supply Source: Analog and Digital
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 28-TSSOP (0.173", 4.40mm Width)

ULTRASOUND APPLICATIONS
The AD9203 provides excellent performance in 10-bit
ultrasound applications. This is demonstrated by its high SNR
with analog input frequencies up to and including Nyquist. The
presence of spurs near the base of a fundamental frequency bin
is demonstrated by Figure 37. Note that the spurs near the noise
floor are more than 80 dB below f
in Doppler ultrasound applications where low frequency shifts
from the fundamental are important.
Figure 36 illustrates the AD604 variable gain amplifier
configured for time gain compensation (TGC). The low power
CONDITIONED
TRANSDUCER
SIGNAL
Figure 36. Ultrasound Connection for the AD9203
ANALOG
INPUT
GAIN
CONTROL
AMPLIFIER
AD604
TGC
3V
ANALOG
SINGLE-
ENDED
1.5V
IN
. This is especially valuable
AD8138
3V
AINP
AINN
AD9203
Rev. B | Page 19 of 28
AD9203 is powered from a 3 V supply rail while the high
performance AD604 is powered from 5 V supply rails. An
AD8138 is used to drive the AD9203. This is implemented due
to the ability of differential drive techniques to cancel common-
mode noise and input anomalies.
The 74 mW power consumption gives the 40 MSPS AD9203 an
order of magnitude improvement over older generation
components.
Figure 37. SFDR Performance Near the Fundamental Signal (8192 Point FFT,
–100
–110
–10
–20
–30
–40
–50
–60
–70
–80
–90
4.5E+6
10
0
4.7E+6
f
IN
= 5 MHz, F
4.9E+6
FUND
S
f
IN
= 40 MSPS)
5.1E+6
SNR = 59.9dB
THD = –75dB
SFDR = 82dB
5.3E+6
AD9203
5.5E+6