max5864 Maxim Integrated Products, Inc., max5864 Datasheet - Page 13

• Manufacturer Part Number: max5864
• Description: Max5864 Ultra-low-power, High-dynamic-performance, 22msps Analog Front End
• Manufacturer: Maxim Integrated Products, Inc.

The MAX5864 integrates dual 8-bit receive ADCs and
dual 10-bit transmit DACs while providing ultra-low
power and highest dynamic performance at a conver-
sion rate of 22Msps. The ADCs’ analog input amplifiers
are fully differential and accept 1V
The DACs’ analog outputs are fully differential with
±400mV full-scale output range at 1.4V common mode.
The MAX5864 includes a 3-wire serial interface to con-
trol operating modes and power management. The ser-
ial interface is SPI™ and MICROWIRE™ compatible.
The MAX5864 serial interface selects shutdown, idle,
standby, transmit, receive, and transceiver modes.
Figure 1. MAX5864 ADC Internal T/H Circuits
SPI is a trademark of Motorola, Inc. MICROWIRE is a trademark of National Semiconductor Corp.
______________________________________________________________________________________
Performance, 22Msps Analog Front End
QA+
Detailed Description
QA-
IA+
IA-
S4a
S4b
S4a
S4b
S4c
S4c
P-P
C2a
C2b
C2a
C2b
Ultra-Low-Power, High Dynamic-
full-scale signals.
INTERNAL
S2a
INTERNAL
INTERNAL
S2a
INTERNAL
BIAS
BIAS
BIAS
BIAS
S1
S1
S2b
S2b
C1a
C1b
C1a
C1b
COM
COM
COM
COM
S5a
S5b
S5a
S5b
S3a
S3b
S3a
S3b
The MAX5864 can operate in FDD or TDD applications
by configuring the device for transmit, receive, or trans-
ceiver modes through a 3-wire serial interface. In TDD
mode, the digital bus for receive ADC and transmit
DAC can be shared to reduce the digital I/O to a single
10-bit parallel multiplexed bus. In FDD mode, the
MAX5864 digital I/O can be configured for an 18-bit,
parallel multiplexed bus to match the dual 8-bit ADC
and dual 10-bit DAC.
The MAX5864 features an internal precision 1.024V
bandgap reference is stable over the entire power-supply
and temperature ranges.
OUT
OUT
OUT
OUT
HOLD
TRACK
HOLD
MAX5864
TRACK
CLK
INTERNAL
NONOVERLAPPING
CLOCK SIGNALS
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