TLC8188
10-BIT, 4 MSPS, CIS/LINEAR CCD SENSOR PROCESSOR
SLAS177A – DECEMBER 1997 – REVISED SEPTEMBER 1998
DA PACKAGE
(TOP VIEW)
Supports Both CIS and CCD Sensors
10-Bit, 4 MSPS, A/D Converter
Differential Nonlinearity Error: ±0.5 LSB Typ
Integral Nonlinearity Error: ±0.6 LSB Typ
8-Bit Offset Correction DAC
1
32
OP0
OP1
OP2
OP3
OP4
RPO
RMO
RIN
GIN
BIN
2
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
3
4
PGA With 6-Bit Gain Resolution
Auto-cycling Gain and Offset Control
Single 5-V Supply Operation
5
6
DIV
AV
DD
DD
7
DIGND
AGND
CLAMP
SR
SV
MA0/ACYC
MA1
8
OP5
OP6
OP7
OP8
OP9
Very Low Power: 190 mW Typical
Control by Parallel and Serial Interface
Internal Reference Voltages
9
10
11
12
13
14
15
16
32-Pin TSSOP Package
DV
OE
DD
DGND
ADCCLK
SCK/RNW
NRESET
SEN/STB
SDI/DNA
description
The TLC8188 is a highly-integrated monolithic
analog signal processor/digitizer designed to
interface the contact image sensor (CIS) and linear charge-coupled device (CCD) image sensors in scanner
applications. The input of the TLC8188 allows direct connection to the CIS and direct ac coupling of the linear
CCD. The TLC8188 performs all the analog processing functions necessary to maximize the dynamic range,
correct various errors associated with the CIS and the linear CCD sensors, and then digitize the results with an
on-chip analog-to-digital converter (ADC). The key components of the TLC8188 include: input clamp circuitry
and a correlated double sampler (CDS), a programmable gain amplifier (PGA) with auto-cycling gain control, a
programmable offset correction controlled by a digital-to-analog converter (DAC), a 10-bit, 4 MSPS pipeline
ADC, a bidirectional parallel bus and a three-wire serial port for easy microprocessor interface, and internal
reference voltages.
Designed in advanced CMOS process, the TLC8188 operates from a single 5-V power supply and its digital
interface is 3 V compatible. The normal power consumption of the TLC8188 is just 190 mW.
Fully integrated analog processing circuitry, high throughput rate, single supply operation and low cost make the
TLC8188 an ideal CIS/linear CCD sensor interfacing solution for imaging applications such as scanners and
multifunctional office equipment (printer/scanner/facsimile/copier).
The device is available in a 32-pin TSSOP package and is specified over the 0°C to 70°C operating temperature
range.
AVAILABLE OPTIONS
PACKAGED DEVICE
T
A
SMALL OUTLINE
(DA)
0°C to 70°C
TLC8188CDA
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
Copyright 1998, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265