MAX11044 View Datasheet(PDF) - Maxim Integrated
Part Name
Description
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MAX11044 Datasheet PDF : 28 Pages
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MAX11044/MAX11044B/MAX11045/MAX11045B/
MAX11046/MAX11046B/MAX11054/MAX11055/MAX11056
4-/6-/8-Channel, 16-/14-Bit,
Simultaneous-Sampling ADCs
MAX11054
(TQFP-EP)
PIN
MAX11055
(TQFP-EP)
MAX11056
(TQFP-EP)
27, 33, 40, 48,
54
27, 33, 40, 48,
54
27, 33, 40, 48,
54
37
34
31
39
37
34
42
39
37
44
42
39
41
41
41
—
44
42
—
47
44
—
—
47
—
—
50
61
61
61
62
62
62
63
63
63
64
64
64
31, 34, 47, 50
31, 50
—
—
—
—
NAME
RDC
CH0
CH1
CH2
CH3
REFIO
CH4
CH5
CH6
CH7
WR
CS
RD
DB13
I.C.
EP
Pin Description (continued)
FUNCTION
Reference Buffer Decoupling. Connect all RDC outputs
together. Bypass to AGND with at least an 80μF total
capacitance. See the Layout, Grounding, and Bypassing
section.
Channel 0 Analog Input
Channel 1 Analog Input
Channel 2 Analog Input
Channel 3 Analog Input
External Reference Input/Internal Reference Output.
Place a 0.1μF capacitor from REFIO to AGND.
Channel 4 Analog Input
Channel 5 Analog Input
Channel 6 Analog Input
Channel 7 Analog Input
Active-Low Write Input. Drive WR low to write to the
ADC. Configuration registers are loaded on the rising
edge of WR.
Active-Low Chip-Select Input. Drive CS low when
reading from or writing to the ADC.
Active-Low Read Input. Drive RD low to read from the
ADC. Each rising edge of RD advances the channel
output on the data bus.
14-Bit Parallel Data Bus Digital Output Bit 13
Internally Connected. Connect to AGND.
Exposed Pad. Internally connected to AGND. Connect to
a large ground plane to maximize thermal performance.
Not intended as an electrical connection point.
Detailed Description
The MAX11044/MAX11044B/MAX11045/MAX11045B/
MAX11046/MAX11046B and MAX11054/ MAX11055/
MAX11056 are fast, low-power ADCs that combine 4, 6, or 8
independent ADC channels in a single IC. Each channel
includes simultaneously sampling independent T/H circuitry
that preserves relative phase information between inputs
making the MAX11044/MAX11044B/MAX11045/
MAX11045B/MAX11046/MAX11046B and MAX11054/
MAX11055/MAX11056 ideal for motor control and power
monitoring. The MAX11044/MAX11044B/MAX11045/
MAX11045B/MAX11046/MAX11046B and MAX11054/
MAX11055/MAX11056 are available with ±5V input
ranges that feature ±20mA overrange, fault-tolerant inputs.
The MAX11044/MAX11044B/MAX11045/MAX11045B/
Maxim Integrated
MAX11046/MAX11046B and MAX11054/MAX11055/
MAX11056 operate with a single 4.75V to 5.25V supply. A
separate 2.7V to 5.25V supply for digital circuitry makes
the devices compatible with low-voltage processors.
The MAX11044/MAX11044B/MAX11045/MAX11045B/
MAX11046/MAX11046B and MAX11054/MAX11055/
MAX11056 perform conversions for all channels in par-
allel by activating independent ADCs. Results are avail-
able through a high-speed, 20MHz, parallel data bus
after a conversion time of 3μs following the end of a
sample. The data bus is bidirectional and allows for
easy programming of the configuration register. The
MAX11044/MAX11044B/MAX11045/MAX11045B/
MAX11046/MAX11046B and MAX11054/MAX11055/
MAX11056 feature a reference buffer, which is driven by
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