MCM20027IBMN Freescale, MCM20027IBMN Datasheet - Page 19

• Manufacturer Part Number: MCM20027IBMN
• Manufacturer: Freescale
• Type: CMOSr

Specifications of MCM20027IBMN

• Sensor Image Color Type: Monochrome
• Sensor Image Size Range: >= 480,000Pixels
• Sensor Image Size: 1280x1024Pixels
• Operating Supply Voltage (min): 3V
• Operating Supply Voltage (typ): 3.3V
• Operating Supply Voltage (max): 3.6V
• Operating Temp Range: 0C to 40C
• Package Type: CLCC
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 48
• Lead Free Status / RoHS Status: Supplier Unconfirmed

Revision 8.4 - 24 Oct 2002 :
7.5 Global Digital Offset Voltage Adjust (DOVA)
A programmable global offset adjustment is available
on the MCM20027. A user defined offset value is loaded
via a 6-bit signed magnitude programming code via the
Global DOVA Register, (Table 30), on page
Offset correction allows fine-tuning of the signal to re-
move any additional residual error which may have ac-
cumulated in the analog signal path. This function is
performed directly before analog to digital conversion
and introduces a fixed gain of 2.0X. This feature is use-
ful in applications that need to insert a desired offset to
adjust for a known system noise floor relative to AVSS
and offsets of amplifiers in the analog chain.
MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
MCM20027
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
47.
7.6 Analog to Digital Converter (ADC)
The ADC is a fully differential, low power circuit. A pipe-
lined, Redundant Signed Digit (RSD) algorithmic tech-
nique is used to yield an ADC with superior
characteristics for imaging applications.
Integral Noise Linearity (INL) and Differential Noise Lin-
earity (DNL) performance is specified at +1.0 and +0.5,
respectively, with no missing codes. The input voltage
resolution is 2.44 mV with a full-scale 2.5 V
V
grammed via a Programmable Voltage Reference Gen-
erator. The positive reference voltage (VREFP) and
negative reference voltages (VREFM) can be pro-
grammed from 2.5V to 1.25V and 0V to 1.25V respec-
tively in steps of 5mV via the Reference Voltage
Registers
independently or in conjunction with the DPGAs to max-
imize the system dynamic range based on incident illu-
mination. The default input range for the ADC is 1.9V for
VREFP and 0.6V for VREFM hence allowing a 10 bit
digitization of a 1.3V peak to peak signal.
pp
/2
10
). The input dynamic range of the ADC is pro-
(Table 19
and
Table
20). This feature is used
ImageMOS
ImageMOS
pp
input (2.5
MOTOROLA
19