MAX19711ETN+T Maxim Integrated Products, MAX19711ETN+T Datasheet - Page 22

• Manufacturer Part Number: MAX19711ETN+T
• Description: IC ANLG FRNT END 56-TQFN
• Manufacturer: Maxim Integrated Products

Specifications of MAX19711ETN+T

• Number Of Bits: 10
• Number Of Channels: 2
• Power (watts): 37.5mW
• Voltage - Supply, Analog: 3V
• Voltage - Supply, Digital: 3V
• Package / Case: 56-TQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

10-Bit, 11Msps, Full-Duplex
Analog Front-End
Shutdown mode offers the most dramatic power sav-
ings by shutting down all the analog sections (including
the reference) of the MAX19711. In shutdown mode,
the Rx ADC digital outputs are in tri-state mode, the Tx
DAC digital inputs are internally pulled to OV
the Tx DAC outputs are at 0V. When the Rx ADC out-
puts transition from tri-state to active mode, the last
converted word is placed on the digital output bus. The
Tx DAC previously stored data is lost when coming out
of shutdown mode. The wake-up time from shutdown
mode is dominated by the time required to charge the
capacitors at REFP, REFN, and COM. In internal refer-
22
Table 5. MAX19711 Tx, Rx, and FD Control Using SPI Commands
A3
(16-Bit Mode)
(8-Bit Mode)
______________________________________________________________________________________
ADDRESS
A2
0000
1000
and
A1
A0
E2
0
1
1
1
1
DATA BITS
E1
1
0
0
1
1
E0
1
0
1
0
1
SPI1-Rx
SPI2-Tx
SPI3-Rx
SPI4-Tx
MODE
FD
(Tx-Rx SWITCHING SPEED)
DD
, and
FUNCTION
SLOW
SLOW
FAST
FAST
FAST
ence mode and buffered external reference mode, the
wake-up time is typically 500µs to enter Rx mode, 26µs
to enter Tx mode, and 500µs to enter FD mode.
In all operating modes the Tx DAC inputs DA0–DA9 are
internally pulled to OV
of the MAX19711 in shutdown mode do not pull
DA0–DA9 low. This consideration is especially impor-
tant in shutdown mode to achieve the lowest quiescent
current.
In idle mode, the reference and clock distribution cir-
cuits are powered, but all other functions are off. The
Rx Mode:
Rx ADC = ON
Rx Bus = Enabled
Tx DAC = OFF
(Tx DAC outputs at 0V)
Tx Bus = OFF (all inputs
are pulled high)
Tx Mode:
Rx ADC = OFF
Rx Bus = Tri-state
Tx DAC = ON
Tx Bus = ON
Rx Mode:
Rx ADC = ON
Rx Bus = Enabled
Tx DAC = ON
(Tx DAC outputs at
midscale)
Tx Bus = OFF (all inputs
are pulled high)
Tx Mode:
Rx ADC = ON
Rx Bus = Tri-state
Tx DAC = ON
Tx Bus = ON
FD Mode:
Rx ADC = ON
Rx Bus = ON
Tx DAC = ON
Tx Bus = ON
DESCRIPTION
DD
. To reduce the supply current
Fast transition to any
Slow transition to Rx
Slow transition to Tx
Fast transition to Rx
Fast transition to Tx
mode. Moderate
mode. Moderate
mode. Moderate
mode from this
mode from this
mode from this
mode from this
Default Mode
COMMENT
Low power.
Low power.
power.
power.
power.
mode.
mode.