MAX1090BEEI Maxim Integrated, MAX1090BEEI Datasheet - Page 17

• Manufacturer Part Number: MAX1090BEEI
• Description: Analog to Digital Converters - ADC
• Manufacturer: Maxim Integrated

Specifications of MAX1090BEEI

• Number Of Channels: 8/4
• Architecture: SAR
• Conversion Rate: 400 KSPs
• Resolution: 10 bit
• Input Type: Single-Ended/Pseudo-Differential
• Snr: Yes
• Interface Type: Parallel
• Operating Supply Voltage: 2.7 V to 5.5 V, 5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: QSOP-28
• Maximum Power Dissipation: 667 mW
• Minimum Operating Temperature: - 40 C
• Number Of Converters: 1
• Voltage Reference: Internal 2.5 V or External

High-frequency noise in the power supply (V
influence the proper operation of the ADC’s fast com-
parator. Bypass V
of two parallel capacitors, 0.1µF and 4.7µF, located as
close as possible to the MAX1090/MAX1092 power-
supply pin. Minimize capacitor lead length for best sup-
ply-noise rejection, and add an attenuation resistor (5Ω)
if the power supply is extremely noisy.
__________________________Definitions
Integral nonlinearity (INL) is the deviation of the values
on an actual transfer function from a straight line. This
straight line can be either a best-straight-line fit or a line
drawn between the end points of the transfer function,
once offset and gain errors have been nullified. The
Figure 10. Timing Diagram for Fastest Conversion
D7–D0
STATE
HBEN
CLK
WR
RD
with +2.5V Reference and Parallel Interface
CONTROL
BYTE
1
DD
______________________________________________________________________________________
400ksps, +5V, 8-/4-Channel, 10-Bit ADCs
D7–D0 D9–D8
ACQUISITION
LOW
2
BYTE
to the star ground with a network
3
HIGH
BYTE
Integral Nonlinearity
SAMPLING INSTANT
4
5
6
7
DD
) could
8
9
10
MAX1090/MAX1092’s INL is measured using the end-
point method.
Differential nonlinearity (DNL) is the difference between
an actual step width and the ideal value of 1 LSB. A
DNL error specification of less than 1 LSB guarantees
no missing codes and a monotonic transfer function.
Aperture jitter (t
the time between the samples.
Aperture delay (t
edge of the sampling clock and the instant when an
actual sample is taken.
CONTROL BYTE
CONVERSION
11
12
13
AJ
14
) is the sample-to-sample variation in
AD
) is the time between the rising
15
Differential Nonlinearity
16
LOW
BYTE
D7–D0 D9–D8
Aperture Delay
Aperture Jitter
ACQUISITION
HIGH
BYTE
17