TLV987
3-V 10-BIT 27 MSPS AREA CCD SENSOR
SIGNAL PROCESSOR
SLAS211A – MARCH 1999 – REVISED SEPTEMBER 1999
10-Bit, 27 MSPS, A/D Converter
Single 3-V Supply Operation
PFB PACKAGE
(TOP VIEW)
Low Power: 200 mW Typical at 3 V, 2 mW
Power-Down Mode
Differential Nonlinearity Error: <±0.6 LSB
Typ
48 47 46 45 44 43 42 41 40 39 38 37
Integral Nonlinearity Error: <±2 LSB Typ
36
35
34
33
32
31
30
29
28
27
26
25
BLKG
TPP
TPM
DIN
PIN
1
2
3
4
5
6
7
8
9
Programmable Gain Amplifier (PGA) With
0-dB to 36-dB Gain Range (0.09 dB/step)
AV
DD2
AGND2
Automatic or Programmable Black Level
and Offset Calibration
AV
DD4
AGND4
OBCLP
STBY
RESET
CS
SDIN
SCLK
ADCCLK
DGND
Additional DACs for External Analog
Setting
DV
DD
D0
D1
D2
Serial Interface for Register Configuration
Internal Reference Voltages
D3 10
48-Pin TQFP Package
D4
D5
11
12
applications
Digital Still Camera
Digital Camcorder
Digital Video Camera
13 14 15 16 17 18 19 20 21 22 23 24
description
The TLV987 is a highly integrated monolithic analog signal processor/digitizer designed to interface the area
charge-coupled device (CCD) sensors in digital camera applications. The TLV987 performs all the analog
processing functions necessary to maximize the dynamic range, corrects various errors associated with the
CCD sensor, and then converts the results from analog to digital using the on-chip high-speed analog-to-digital
converter (ADC). The key components of the TLV987 include input clamp circuitry, a correlated double sampler
(CDS), and a programmable gain amplifier (PGA). The PGA has 0-dB to 36-dB gain range. In addition, the
TLV987 has two internal digital-to-analog converters (DACs) for automatic or programmable optical black level
and offset calibration. The TLV987 also has two additional DACs for external system control, and internal
reference voltages. The TLV987 has a parallel data port for easy microprocessor interface and a serial port for
configuring internal control registers.
Designed in advanced CMOS process, the TLV987 operates from a single 3-V power supply with a normal
power consumption of 200 mW and a 2 mW power-down mode.
Very high throughput rate, single 3-V operation, low power consumption, and fully integrated analog processing
circuitry make the TLV987 an ideal CCD sensor interfacing solution for digital camera applications.
The device is available in a 48-pin TQFP package and is characterized for operation over 0°C to 70°C operating
free-air temperature range.
AVAILABLE OPTIONS
PACKAGE
T
A
TQFP (PFB)
0°C to 70°C
TLV987CPFB
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.
TI is a trademark of Texas Instruments Incorporated.
Copyright 1999, 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