THS1041_15 Datasheet, PDF (1/42 Pages) Texas Instruments – 10-Bit, 40-MSPS ANALOG-TO-DIGITAL CONVERTER WITH PGA AND CLAMP

THS1041
SLAS289C − OCTOBER 2001 − REVISED OCTOBER 2004
10ĆBit, 40ĆMSPS ANALOGĆTOĆDIGITAL CONVERTER
WITH PGA AND CLAMP
FEATURES
D Analog Supply 3 V
D Digital Supply 3 V
D Configurable Input Functions:
− Single-Ended
− Single-Ended With Analog Clamp
− Single-Ended With Programmable Digital
Clamp
− Differential
D Built-In Programmable Gain Amplifier (PGA)
D Differential Nonlinearity: ± 0.45 LSB
D Signal-to-Noise: 60 dB Typ f_(IN) at 4.8 MHz
D Spurious Free Dynamic Range: 72 dB
D Adjustable Internal Voltage Reference
D Unsigned Binary/2s Complement Output
D Out-of-Range Indicator
D Power-Down Mode
APPLICATIONS
D Video/CCD Imaging
D Communications
D Set-Top-Box
D Medical
DESCRIPTION
The THS1041 is a CMOS, low power, 10-bit, 40 MSPS
analog-to-digital converter (ADC) that operates from a
single 3-V supply. The THS1041 has been designed to
give circuit developers flexibility. The analog input to the
THS1041 can be either single-ended or differential.
This device has a built-in clamp amplifier whose clamp
input level can be driven from an external dc source or
from an internal high-precision 10-bit digital clamp level
programmable via an internal CLAMP register. A 3-bit
PGA is included to maintain SNR for small signals. The
THS1041 provides a wide selection of voltage
references to match the user’s design requirements.
For more design flexibility, the internal reference can be
bypassed to use an external reference to suit the dc
accuracy and temperature drift requirements of the
application. The out-of-range output indicates any
out-of-range condition in THS1041’s input signal. The
format of the digital output can be coded in either
unsigned binary or 2s complement.
The speed, resolution, and single-supply operation of
the THS1041 are suited to applications in set-top-box
(STB), video, multimedia, imaging, high-speed
acquisition, and communications. The built-in clamp
function allows dc restoration of a video signal and is
suitable for video applications. The speed and
resolution ideally suit charge-couple device (CCD) input
systems such as color scanners, digital copiers, digital
cameras, and camcorders. A wide input voltage range
allows the THS1041 to be applied in both imaging and
communications systems.
The THS1041C is characterized for operation from 0°C
to 70°C, while the THS1041I is characterized for
operation from −40°C to 85°C.
28-PIN TSSOP/SOIC PACKAGE
(TOP VIEW)
AGND ₁
DV_{DD 2}
I/O0 ₃
I/O1 4
I/O2 5
I/O3 6
I/O4 7
I/O5 8
I/O6 9
I/O7 10
I/O8 11
I/O9 12
OVR 13
DGND 14
28 ^AV_DD
27 ^AIN+
26 ^VREF
25 AIN−
24 REFB
23 MODE
22 REFT
21 CLAMPOUT
20 CLAMPIN
19 CLAMP
18 REFSENSE
17 WR
16 OE
15 CLK
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.
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.
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Copyright  2002 − 2004, Texas Instruments Incorporated
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