MAX1292ACEG Maxim Integrated, MAX1292ACEG Datasheet - Page 17

• Manufacturer Part Number: MAX1292ACEG
• Description: Analog to Digital Converters - ADC Integrated Circuits (ICs)
• Manufacturer: Maxim Integrated

Specifications of MAX1292ACEG

• Number Of Channels: 4/2
• Architecture: SAR
• Conversion Rate: 400 KSPs
• Resolution: 12 bit
• Input Type: Single-Ended/Pseudo-Differential
• Snr: Yes
• Interface Type: Parallel
• Operating Supply Voltage: 4.5 V to 5.5 V
• Maximum Operating Temperature: + 70 C
• Package / Case: QSOP-24
• Maximum Power Dissipation: 762 mW
• Minimum Operating Temperature: 0 C
• Number Of Converters: 1
• Factory Pack Quantity: 50
• Voltage Reference: 2.5 V

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 MAX1290/MAX1292 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 endpoints 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
CONTROL
BYTE
with +2.5V Reference and Parallel Interface
1
ACQUISITION
D7–D0 D11–D8
2
LOW
BYTE
DD
______________________________________________________________________________________
400ksps, +5V, 8-/4-Channel, 12-Bit ADCs
3
to the star ground with a network
HIGH
BYTE
SAMPLING INSTANT
4
Integral Nonlinearity
5
6
7
DD
) could
8
9
CONTROL BYTE
CONVERSION
10
MAX1290/MAX1292’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.
11
12
13
AJ
) is the sample-to-sample variation in
AD
14
) is the time between the rising
Differential Nonlinearity
15
16
Aperture Delay
Aperture Jitter
D7–D0 D11–D8
LOW
BYTE
ACQUISITION
HIGH
BYTE
17