RHF1201_11 STMICROELECTRONICS [STMicroelectronics], RHF1201_11 Datasheet - Page 19

• Manufacturer Part Number: RHF1201_11
• Description: Rad-hard 12-bit 50 Msps A/D converter
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

RHF1201
7.1
7.1.1
RHF1201 operating modes
Extra functionalities are provided to simplify the application board as much as possible. The
operating modes offered by the RHF1201 are described in
Table 11.
Inputs
Data format select (DFSB): when set to low level (V
two’s complement digital output MSB. This can be of interest when performing some further
signal processing. When set to high level (V
coding.
Output enable (OEB): when set to low level (V
set to high level (V
converter goes on sampling. When OEB is set to a low level again, the data arrives on the
output with a very short T
Figure 11 on page 8
Slew rate control (SRC): when set to high level (V
to a clamp value so that any digital noise power is reduced to the minimum. When set to low
level (V
(V
maximum range
(V
minimum range
X
X
X
(V
differential amplitude
IN
IN
IN
-V
-V
-V
Analog input
INB
INB
INB
IL
), the output edges are twice as fast.
) above
) below
) within range
RHF1201 operating modes
IH
Inputs
), all digital output buffers are in high impedance state while the
summarizes this functionality.
DFSB OEB
on
H
H
H
X
X
X
L
L
L
delay. This feature enables the chip select of the device.
Doc ID 12585 Rev 5
H
L
L
L
L
L
L
L
L
Electrical characteristics (unchanged after 300 kRad)
SRC
X
X
X
X
X
X
X
H
L
IH
OR
), DFSB provides a standard binary output
H
H
H
H
X
X
L
L
IL
), all digital outputs remain active. When
IH
high slew rate
low slew rate
), all digital output currents are limited
IL
), the digital input DFSB provides a
CLK
CLK
CLK
CLK
CLK
CLK
CLK
CLK
DR
Table
High Impedance
Outputs
11.
D11
D11 complemented
D11
D11 complemented
D11
D11 complemented
Low slew rate
High slew rate
Most significant bit
(MSB)
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