ISL5640
Data Sheet
June 2000
File Number 4657.3
ADVANCE INFORMATION
3V Dual 8-Bit, 20/40/60MSPS A/D
Features
Converter with Internal Voltage Reference
• Sampling Rate . . . . . . . . . . . . . . . . . . . . . . . . . . .40MSPS
The ISL5640 is a monolithic, dual 8-bit analog-to-digital
converter fabricated in an advanced CMOS process. It is
designed for high speed applications where integration,
bandwidth and accuracy are essential. The ISL5640
features a 9-stage pipeline architecture. The fully pipelined
architecture and an innovative input stage enable the
ISL5640 to accept a variety of input configurations, single-
ended or fully differential. Only one external clock is
necessary to drive both converters and an internal band-gap
voltage reference is provided. This allows the system
designer to realize an increased level of system integration
resulting in decreased cost and power dissipation.
• 7.4 Bits at f = 1MHz
IN
• Low Power at 40MSPS. . . . . . . . . . . . . . . . . . . . . 100mW
• Power Down Mode . . . . . . . . . . . . . . . . . . . . . . . . . <1mW
• Wide Full Power Input Bandwidth. . . . . . . . . . . . . 250MHz
• SFDR at f = 1MHz. . . . . . . . . . . . . . . . . . . . . . . . . .55dB
IN
• Excellent Channel-to-Channel Isolation . . . . . . . . . >75dB
• On-Chip Sample and Hold Amplifiers
• Internal Bandgap Voltage Reference . . . . . . . . . . . . 1.25V
• Single Supply Voltage Operation . . . . . . . . . . . . . . . +3.0V
• Offset Binary or Two’s Complement Output Format
• Dual 8-Bit A/D Converters on a Monolithic Chip
• Pin Compatible Upgrade to AD9288
The ISL5640 has excellent dynamic performance while
consuming less than 100mW power at 40MSPS. The A/D
only requires a single +3.0V power supply. Data output
latches are provided which present valid data to the output
bus with a latency of 5 clock cycles.
The ISL5640 is offered in 20MSPS, 30MSPS, 40MSPS and
60MSPS sampling rates.
Applications
• Wireless Local Loop
Ordering Information
• PSK and QAM I&Q Demodulators
• Medical Imaging
TEMP.
SAMPLING
RATE
(MSPS)
PART
NUMBER
RANGE
( C)
o
• High Speed Data Acquisition
PACKAGE PKG. NO.
ISL5640/2IN
ISL5640/3IN
ISL5640/4IN
ISL5640/6IN
ISL5640 EVAL
-40 to 85 48 Ld LQFP
-40 to 85 48 Ld LQFP
-40 to 85 48 Ld LQFP
-40 to 85 48 Ld LQFP
Q48.7x7
Q48.7x7
Q48.7x7
Q48.7x7
20
30
40
60
Pinout
48 LEAD LQFP
TOP VIEW
25
Evaluation Platform
48 47 46 45 44 43 42 41 40 39 38 37
N/C
N/C
GND
DV
36
35
34
33
32
31
30
29
28
27
26
25
1
GND
I
+
2
3
IN
I
-
IN
DFS
4
5
CC
GND
AV
IV
RIN
CC
V
ROUT
6
7
AV
QV
CC
RIN
S1
GND
DV
8
CC
S2
9
GND
N/C
N/C
Q
-
10
IN
Q
+
11
12
IN
GND
13 14 15 16 17 18 19 20 21 22 23 24
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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