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ADC12DJ2700 Datasheet(PDF) 5 Page - Texas Instruments

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Part No. ADC12DJ2700
Description  5.4-GSPS Single-Channel or 2.7-GSPS Dual-Channel, 12-Bit, RF-Sampling Analog-to-Digital Converter (ADC)
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

ADC12DJ2700 Datasheet(HTML) 5 Page - Texas Instruments

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ADC12DJ2700
www.ti.com
SLVSEH9 – JANUARY 2018
Product Folder Links: ADC12DJ2700
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Copyright © 2018, Texas Instruments Incorporated
Pin Functions (continued)
PIN
I/O
DESCRIPTION
NO.
NAME
B8
DA7+
O
High-speed serialized data output for channel A, lane 7, positive connection. This differential
output must be AC-coupled and must always be terminated with a 100-Ω differential termination
at the receiver. This pin can be left disconnected if not used. For information regarding reliable
serializer operation, see footnote (1) in the Pin Functions table.
B9
DA7–
O
High-speed serialized data output for channel A, lane 7, negative connection. This pin can be left
disconnected if not used. For information regarding reliable serializer operation, see footnote (1) in
the Pin Functions table.
B10
DA6+
O
High-speed serialized data output for channel A, lane 6, positive connection. This differential
output must be AC-coupled and must always be terminated with a 100-Ω differential termination
at the receiver. This pin can be left disconnected if not used. For information regarding reliable
serializer operation, see footnote (1) in the Pin Functions table.
B11
DA6–
O
High-speed serialized data output for channel A, lane 6, negative connection. This pin can be left
disconnected if not used. For information regarding reliable serializer operation, see footnote (1) in
the Pin Functions table.
B12
DGND
Digital supply ground. Tie AGND and DGND to a common ground plane (GND) on the circuit
board.
C1
TMSTP–
I
Timestamp input positive connection or differential JESD204B SYNC negative connection. This
pin can be left disconnected and disabled (TMSTP_RECV_EN = 0) if SYNCSE is used for
JESD204B SYNC and timestamp is not required.
C2
SYNCSE
I
Single-ended JESD204B SYNC signal. This input is an active low input that is used to initialize
the JESD204B serial link when SYNC_SEL is set to 0. When toggled low this input initiates code
group synchronization (see the Code Group Synchronization (CGS) section). After code group
synchronization, this input must be toggled high to start the initial lane alignment sequence (see
the Initial Lane Alignment Sequence (ILAS) section). A differential SYNC signal can be used
instead by setting SYNC_SEL to 1 and using TMSTP± as a differential SYNC input. Tie this pin to
GND if differential SYNC (TMSTP±) is used as the JESD204B SYNC signal.
C3
BG
O
Band-gap voltage output. This pin is capable of sourcing only small currents and driving limited
capacitive loads, as specified in the Recommended Operating Conditions table. This pin can be
left disconnected if not used.
C4
VA19
I
1.9-V analog supply
C5
VA11
I
1.1-V analog supply
C6
AGND
Analog supply ground. Tie AGND and DGND to a common ground plane (GND) on the circuit
board.
C7
NCOA0
I
LSB of NCO selection control for DDC A. NCOA0 and NCOA1 select which NCO, of a possible
four NCOs, is used for digital mixing when using a complex output JMODE. The remaining
unselected NCOs continue to run to maintain phase coherency and can be swapped in by
changing the values of NCOA0 and NCOA1 (when CMODE = 1). This pin is an asynchronous
input. See the NCO Fast Frequency Hopping (FFH) and NCO Selection sections for more
information. Tie this pin to GND if not used.
C8
ORA0
O
Fast overrange detection status for channel A for the OVR_T0 threshold. When the analog input
exceeds the threshold programmed into OVR_T0, this status indicator goes high. The minimum
pulse duration is set by OVR_N. See the ADC Overrange Detection section for more information.
This pin can be left disconnected if not used.
C9, C10
VD11
I
1.1-V digital supply
C11
DA5+
O
High-speed serialized data output for channel A, lane 5, positive connection. This differential
output must be AC-coupled and must always be terminated with a 100-Ω differential termination
at the receiver. This pin can be left disconnected if not used. For information regarding reliable
serializer operation, see footnote (1) in the Pin Functions table.
C12
DA1+
O
High-speed serialized data output for channel A, lane 1, positive connection. This differential
output must be AC-coupled and must always be terminated with a 100-Ω differential termination
at the receiver. This pin can be left disconnected if not used. For information regarding reliable
serializer operation, see footnote (1) in the Pin Functions table.
D1
AGND
Analog supply ground. Tie AGND and DGND to a common ground plane (GND) on the circuit
board.
D2, D3
VA11
I
1.1-V analog supply
D4
VA19
I
1.9-V analog supply
D5
VA11
I
1.1-V analog supply


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