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  Holtek Semiconductor Electronic Components Datasheet  

HT82V24 Datasheet

3-Channel CCD/CIS Analog Signal Processor

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HT82V24
16-Bit, 15MSPS, 3-Channel CCD/CIS Analog Signal Processor
Features
· Operating voltage: 5V
· Low power consumption at 380mW (Typ.)
· Power-down mode: Under 2mA (Typ.)
· 16-bit 15 MSPS A/D converter
· Supports ADI/WM mode data output formats selec-
tion
· Guaranteed won¢t miss codes
· 1~6x programmable gain
· Correlated Double Sampling
· ±300mV programmable offset
· Input clamp circuitry
· Internal voltage reference
· Multiplexed byte/nibble-wide output (8´2/4´4 format)
· Programmable 3-wire serial interface
· 3V/5V digital I/O compatibility
· 3-channel operation up to 5 MSPS for each channel
· 2-channel (Even-Odd) operation up to 7.5 MSPS for
each channel
· 1-channel operation up to 15 MSPS
· 20/28-pin SOP/SSOP package (Pb-free on request)
www.DataSheet4UA.cpopmlications
Flatbed document scanners
Film scanners
Digital color copiers
Multifunction peripherals
General Description
The HT82V24 is a complete analog signal processor for
CCD imaging applications. It features a 3-channel archi-
tecture designed to sample and condition the outputs of
tri-linear color CCD arrays. Each channel consists of an
input clamp, Correlated Double Sampler (CDS), offset
DAC and Programmable Gain Amplifier (PGA), and a
high performance 16-bit A/D converter.
The CDS amplifiers may be disabled for use with sen-
sors such as Contact Image Sensors (CIS) and CMOS
active pixel sensors, which do not require CDS.
The 16-bit digital output is multiplexed into an 8/4-bit
output word that is accessed using two/four read cycles.
The internal registers are programmed through a 3-wire
serial interface, which provides gain, offset and operat-
ing mode adjustments. HT82V24 supports ADI/WM
mode data output formats.
The HT82V24 operates from a single 5V power supply,
typically consumes 380mW of power.
Block Diagram
AVD D AVSS R EFT R EFB
AVDD AVSS
DVDD DVSS
V IN R
V IN G
V IN B
O FFSET
CDS +
PG A
9 - B it
DAC
CDS +
9 - B it
DAC
CDS +
In p u t
C la m p
B ia s
9 - B it
DAC
BANDG AP
R e fe re n c e
PG A
3 .1
M UX
1 6 - B it
ADC
16
PG A
6
RED
G REEN
B LU E
C o n fig u r a tio n
R e g is te r
M UX
R e g is te r
G a in
R e g is te r s
9 RED
G REEN
B LU E
O ffs e t
R e g is te r s
C D S C L K 1 /V S M P C D S C L K 2
A D C C LK
OE
8 or4
M UX
DOUT
D ig ita l
C o n tro l
In te rfa c e
S C LK
S LO A D
SD ATA
Rev. 1.00
1 September 7, 2005


  Holtek Semiconductor Electronic Components Datasheet  

HT82V24 Datasheet

3-Channel CCD/CIS Analog Signal Processor

No Preview Available !

HT82V24
Pin Assignment
AVSS
AVDD
VSM P
A D C C LK
DVDD
DVSS
D7
D6
D5
D4
1
2
3
4
5
6
7
8
9
10
2 0 V IN R
19 O FFS E T
18 C M L
17 R E FT
16 R E FB
15 A V S S
14 A V D D
13 S LO A D
12 S C LK
11 S D A TA
H T82V 24
2 0 S O P -A /S S O P -A
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Pin Description
C D S C L K 1 /V S M P
C D S C LK 2
A D C C LK
OE
DVDD
DVSS
D 7 (M S B )
D6
D5
D4
D3
D2
D1
D 0 (L S B )
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28 A V D D
27 A V S S
2 6 V IN R
25 O FFS E T
2 4 V IN G
23 C M L
2 2 V IN B
21 R E FT
20 R E FB
19 A V S S
18 A V D D
17 S LO A D
16 S C LK
15 S D A TA
H T82V 24
2 8 S O P -A /S S O P -A
Pin Name
CDSCLK1/VSMP
CDSCLK2
ADCCLK
OE
DVDD
DVSS
D7~D0
SDATA
SCLK
SLOAD
AVSS
AVDD
REFB
REFT
VINB
CML
VING
OFFSET
VINR
I/O Description
CDS reference clock pulse input
DI ADI mode: CDSCLK1
WM mode: VSMP
DI CDS data clock pulse input
DI A/D sample clock input for 3-channels mode
DI Output enable, active low
P Digital power
P Digital ground
DO Digital data output
DI/DO Serial data input/output
DI Clock input for serial interface
DI Serial interface load pulse
P Analog ground
P Analog supply
AO Reference decoupling
AO Reference decoupling
AI Analog input, blue
AO Internal reference output
AI Analog input, green
AO Clamp bias level decoupling
AI Analog input, red
Absolute Maximum Ratings
Supply Voltage ..........................VSS-0.3V to VSS+5.5V
Input Voltage .............................VSS-0.3V to VDD+0.3V
Storage Temperature ...........................-50°C to 125°C
Operating Temperature ..........................-25°C to 75°C
Note: These are stress ratings only. Stresses exceeding the range specified under ²Absolute Maximum Ratings² may
cause substantial damage to the device. Functional operation of this device at other conditions beyond those
listed in the specification is not implied and prolonged exposure to extreme conditions may affect device reliabil-
ity.
Rev. 1.00
2 September 7, 2005


Part Number HT82V24
Description 3-Channel CCD/CIS Analog Signal Processor
Maker Holtek Semiconductor
Total Page 21 Pages
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