RHF1201
Rad-hard 12-bit 50 Msps A/D converter
Features
■
■
■
Ceramic SO-48 package
Qml-V qualified, smd 5962-05217
Rad hard: 300 kRad(Si) TID
Failure immune (SEFI) and latchup immune
(SEL) up to 120 MeV-cm
2
/mg at 2.7 V and
125° C
Hermetic package
Wide sampling range
Tested at 50 Msps
Optimwatt
TM
adaptive power:
44 mW at 0.5 Msps, 100 mW at 50 Msps
Optimized for 2 V
pp
differential input
SFDR up to 75 dB at
F
S
= 50 Msps,
F
in
= 15 MHz
2.5 V/3.3 V compatible digital I/O
Built-in reference voltage with external bias
capability
The upper metallic lid is not electrically connected to any
pins, nor to the IC die inside the package.
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■
■
■
■
■
■
■
Description
The RHF1201 is a 12-bit 50 Msps sampling
frequency analog-to-digital converter that uses
pure (ELDRS-free) CMOS 0.25 µm technology
combining high performance, radiation
robustness and very low power consumption. The
device is based on a pipeline structure and digital
error correction to provide excellent static
linearity. Specifically designed to optimize the
speed power consumption ratio, the RHF1201
integrates a proprietary track-and-hold structure
making it ideal for IF-sampling applications up to
150 MHz. A voltage reference network is
integrated in the circuit to simplify the design and
minimize external components. A tri-state
capability is available on the outputs to allow
common bus sharing. Output data can be coded
in two different formats. A Data Ready signal,
raised when the data is valid on the output, can be
used for synchronization purposes.
Applications
■
■
■
■
Digital communication satellites
Space data acquisition systems
Aerospace instrumentation
Nuclear and high-energy physics
Table 1.
Device summary
SMD pin
-
Quality
level
Engineering
model
Package
SO-48
SO-48
Lead
Packing
finish
Gold
Gold
Strip
pack
Strip
pack
Marking
RHF1201KSO1
5962F0521701VXC
EPPL
-
-
Order code
(1)
RHF1201KSO1
RHF1201KSO-01V 5962F0521701VXC QMLV-Flight
1. Contact your ST sales office for information about the specific conditions for products in die form and for information about
SMD packages.
July 2011
Doc ID 12585 Rev 5
1/34
www.st.com
34
Contents
RHF1201
Contents
1
2
3
4
5
6
7
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Pin connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Pin descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Equivalent circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Timing characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Absolute maximum ratings and operating conditions . . . . . . . . . . . . . 9
Electrical characteristics (unchanged after 300 kRad) . . . . . . . . . . . . 10
7.1
RHF1201 operating modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
7.1.1
7.1.2
Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
7.2
7.3
Driving the analog input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Reference connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
7.3.1
7.3.2
Internal reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
External reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
7.4
7.5
7.6
Clock input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Power consumption optimization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Layout precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
8
Definitions of specified parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
8.1
8.2
Static parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Dynamic parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
9
10
Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
2/34
Doc ID 12585 Rev 5
测试/测量
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