MAX1296BEEG Maxim Integrated, MAX1296BEEG Datasheet - Page 8

• Manufacturer Part Number: MAX1296BEEG
• Description: Analog to Digital Converters - ADC
• Manufacturer: Maxim Integrated

Specifications of MAX1296BEEG

• Number Of Channels: 2/1
• Architecture: SAR
• Conversion Rate: 420 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: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: QSOP-24
• Maximum Power Dissipation: 762 mW
• Minimum Operating Temperature: - 40 C
• Number Of Converters: 1
• Voltage Reference: Internal 2.5 V or External

The MAX1294/MAX1296 ADCs use a successive-approx-
imation (SAR) conversion technique and an input
420ksps, +5V, 6-/2-Channel, 12-Bit ADCs
with +2.5V Reference and Parallel Interface
Figure 2. Simplified Functional Diagram
8
_______________Detailed Description
MAX1294
_______________________________________________________________________________________
(CH5)
(CH4)
(CH3)
(CH2)
COM
CH1
CH0
CLK
25
26
27
28
WR
INT
CS
RD
( ) ARE FOR MAX1294 ONLY.
PIN
MAX1296
21
22
23
24
CLOCK
MULTIPLEXER
ANALOG
INPUT
CONTROL LOGIC
Converter Operation
NAME
V
REF
D11
D10
LATCHES
DD
&
Bandgap Reference Buffer Output/External Reference Input. Add a 4.7µF capacitor
to GND when using the internal reference.
Analog +5V Power Supply. Bypass with a 0.1µF capacitor to GND.
Three-State Digital Output (D11)
Three-State Digital Output (D10)
REF
T/H
12
CHARGE REDISTRIBUTION
THREE-STATE, BIDIRECTIONAL
12-BIT DAC
I/O INTERFACE
track/hold (T/H) stage to convert an analog input signal to
a 12-bit digital output. This output format provides easy
interface to standard microprocessors (µPs). Figure 2
shows the simplified internal architecture of the MAX1294/
MAX1296.
APPROXIMATION
SUCCESSIVE-
12-BIT DATA BUS
REGISTER
D0–D11
12
Pin Description (continued)
A
2.05
FUNCTION
V
=
MAX1294
MAX1296
REFADJ
COMP
17kΩ
REFERENCE
1.22V
V
GND
DD