CS5102A-BLZ Cirrus Logic Inc, CS5102A-BLZ Datasheet - Page 16
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CS5102A-BLZ
Manufacturer Part Number
CS5102A-BLZ
Description
IC ADC 16BIT 100/20KHZ 28-PLCC
Manufacturer
Cirrus Logic Inc
Datasheet
1.CS5101A-BL8Z.pdf
(39 pages)
Specifications of CS5102A-BLZ
Number Of Bits
16
Sampling Rate (per Second)
20k
Data Interface
Serial
Number Of Converters
1
Power Dissipation (max)
65mW
Voltage Supply Source
Analog and Digital, Dual ±
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
28-PLCC
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
598-1079-5
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
CS5102A-BLZ
Manufacturer:
Cirrus Logic Inc
Quantity:
10 000
Part Number:
CS5102A-BLZ
Manufacturer:
CRYSTAL
Quantity:
20 000
16
3.1
The ability of the CS5101A or the CS5102A to con-
vert accurately to 16-bits clearly depends on the
accuracy of its comparator and DAC. Each device
utilizes an “auto-zeroing” scheme to null errors in-
troduced by the comparator. All offsets are stored
on the capacitor array while in the track mode and
are effectively subtracted from the input signal
when a conversion is initiated. Auto-zeroing en-
hances power supply rejection at frequencies well
below the conversion rate.
To achieve 16-bit accuracy from the DAC, the
CS5101A and CS5102A use a novel self-calibra-
Calibration
tion scheme. Each bit capacitor shown in Figure 3
actually consists of several capacitors in parallel
which can be manipulated to adjust the overall bit
weight. An on-chip microcontroller precisely ad-
justs each capacitor with a resolution of 18 bits.
The CS5101A and CS5102A should be reset upon
power-up, thus initiating a calibration cycle. The
device then stores its calibration coefficients in on-
chip SRAM. When the CS5101A and CS5102A are
in power-down mode (SLEEP low), they retain the
calibration coefficients in memory, and need not be
recalibrated when normal operation is resumed.
CS5101A CS5102A
DS45F6