TSA1005 Datasheet, PDF (1/22 Pages) STMicroelectronics – DUAL-CHANNEL, 10-BIT, 20/40MSPS A/D CONVERTER

TSA1005
DUAL-CHANNEL, 10-BIT, 20/40MSPS A/D CONVERTER
s 10-bit, dual-channel A/D converter in deep
submicron CMOS technology, 20/40Msps
s Single supply voltage: 2.5V
Independent supply for CMOS output stage
with 2.5V/3.3V capability
s ENOB=9.5 @ 20Msps, ENOB=9.2 @
40Msps, Fin=10MHz
s SFDR typically up to 62.5dB @ 40Msps,
Fin=10MHz.
s 1GHz analog bandwidth Track-and-Hold
s Common clocking between channels
s Multiplexed outputs
DESCRIPTION
The TSA1005 belongs to a new generation of high
speed, dual-channel Analog to Digital converters,
processed in a mainstream 0.25 µm CMOS tech-
nology and yielding high performances.
The TSA1005 is specifically designed for applica-
tions requiring a very low noise floor, high SFDR
and good isolation between channels. It is based
on a pipeline structure and digital error correction,
providing high static linearity at 20/40 Msp, and
Fin = 10 MHz.
For each channel, a voltage reference is integrat-
ed to simplify the design and minimize external
components. It is nevertheless possible to use the
circuit with external references.
Each ADC output is multiplexed on a common bus
with small number of pins. A tri-state capability is
available for the output signals, allowing for chip
selection. The input signals of the ADC must be
differentially driven.
The TSA1005 is supports an extended (0 to
+85°C) temperature range, and is available in the
small 48-pin TQFP package.
APPLICATIONS
s Medical imaging and ultrasound
s I/Q signal processing applications
s High speed data acquisition system
s Portable instrumentation
s High resolution fax and scanners
ORDER CODE
Part Number
TSA1005-20IF
TSA1005-20IFT
TSA1005I-40IF
TSA1005-40IFT
EVAL1005-20/BA
EVAL1005-40/BA
June 2003
Temperature
Range
Status
-40°C to +85°C
-40°C to +85°C
0°C to +85°C
0°C to +85°C
Sample
Sample
Production
Production
Evaluation board
Conditioning
Tray
Tape & Reel
Tray
Tape & Reel
PIN CONNECTIONS (top view)
index
corner
AGND 1
INI 2
AGND ³
INIB 4
AGND 5
IPOL 6
AVCCB ⁷
AGND 8
INQ 9
AGND 10
INBQ 11
AGND 12
48 47 46 45 44 43 42 41 40 39 38 37
36 ^D0(LSB)
35 D1
34 D2
33 D3
32 D4
TSA1005
31 D5
30 D6
29 D7
28 D8
27 D9(MSB)
26 VCCBE
25 GNDBE
13 14 15 16 17 18 19 20 21 22 23 24
BLOCK DIAGRAM
+2.5V/3.3V
CLK SELECT OEB
VCCBE
VINI
VINBI
VINCMI
VREFPI
VREFMI
IPOL
VREFPQ
VREFMQ
VINCMQ
VINQ
VINBQ
AD 10
I channel
common mode
REF I
Polar.
REF Q
common mode
AD 10
Q channel
Timing
10
M ¹⁰
10 _D0
U
Buffers
TO
X
D9
10
GND
GNDBE
PACKAGE
7 × 7 mm TQFP48
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