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AD15700/PCB Datasheet

  • AD15700/PCB

  • 1 MSPS 16-/14-Bit Analog I/O Port

  • 1007.68KB

  • 44頁

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1 MSPS 16-/14-Bit
Analog I/O Port
AD15700
FEATURES
16-Bit A/D Converter
1 MSPS
S/(N + D): 90 dB Typ @ 250 kHz
No Pipeline Delay
14-Bit D/A Converter
Settling Time: 1 s
S/N: 92 dB Typ
2 80 MHz Amplifiers
30 V/ s Slew Rate
Rail-to-Rail Input and Output
Output Current 15 mA
2 Gain Setting Center Tapped Resistors
Resistor Ratio Tracking: 2 ppm/ C
Unipolar Operation
SPI
廬
/QSPI鈩?MICROWIRE鈩?DSP Compatible
132 mW Typical Power Dissipation
APPLICATIONS
Optical MEMS Mirror Control
Industrial Process Control
Data Acquisition
Instrumentation
Communication
FUNCTIONAL BLOCK DIAGRAM
VDD_DAC
DGND_DAC
VREF
14-BIT DAC
VOUT_DAC
AGND_DAC
CS_DAC
DIN
SCLK
CONTROL
LOGIC
14-BIT DATA LATCH
鈥揑N1
+IN1
+VS1
SERIAL INPUT REGISTER
VOUT1
鈥揤S1
COMMON
AD15700
1.5k
1.5k
RA1
RB1
REF
REFGND
IND(4R)
INC(4R)
INB(2R)
INA(R)
INGND
VOUT2
+VS2
+IN2
鈥揑N2
鈥揤S2
CLOCK
SAR ADC
CONTROL LOGIC AND
CALIBRATION CIRCUITRY
4R
4R
2R
R
SWITCHED
CAP DAC
PARALLEL
INTERFACE
16
SERIAL
PORT
RC1
RPAD1
OVDD
OGND
SER/PAR
BUSY
D[15:0]
CS_ADC
RD
OB/2C
BYTESWAP
AVDD
GENERAL DESCRIPTION
PD
RESET
1.5k
RPAD2
1.5k
AGND_ADC
The AD15700 is a precision component to interface analog input
and output channels to a digital processor. It is ideal for area-
limited applications that require maximum circuit density. The
AD15700 contains the functionality of a 16-bit, 1 MSPS charge
redistribution SAR analog-to-digital converter that operates from
a 5 V power supply. The high speed 16-bit sampling ADC incor-
porates a resistor input scaler that allows various input ranges, an
internal conversion clock, error correction circuits, and both serial
and parallel system interface ports. The AD15700 also contains a
14-bit, serial input, voltage output DAC that operates from a 5 V
supply and has a settling time of 1
ms.
Two single- or split-supply
voltage feedback amplifiers with rail-to-rail input and output
characteristics featuring 80 MHz of small signal bandwidth and
10
mV/鈭濩
offset drift provide ADC and DAC buffering capability.
The center tapped 3 kW resistors are precision resistor networks
with 2 ppm/鈭濩 ratio tracking that provide low gain drift when
used for scaling.
The ADC, DAC, and amp functions are electrically isolated from
each other to provide maximum design flexibility. Input and
output signal conditioning circuits for the converters can be easily
configured with short interconnects under the device at the board
level. The AD15700 is available in a 10 mm CSPBGA package.
REV. A
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties that
may result from its use. No license is granted by implication or otherwise
under any patent or patent rights of Analog Devices. Trademarks and
registered trademarks are the property of their respective companies.
RA2 RB2 RC2
WARP
CNVST
IMPULSE
DVDD
DGND
ADC
PRODUCT HIGHLIGHTS
1. Fast Throughput ADC.
The AD15700 incorporates a high speed, 1 MSPS, 16-bit
SAR ADC.
2. Superior ADC INL.
The 16-bit ADC has a maximum integral nonlineariy of
2.5 LSB with no missing codes.
3. Two Precision Resistor Networks with 2 ppm/鈭濩 Ratio
Tracking for Gain Setting.
4. Low Power Consumption.
Typically 132 mW at maximum performance levels.
5. Industrial Temperature Range: 鈥?0鈭濩 to +85鈭濩.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
www.analog.com
Fax: 781/326-8703
漏 2003 Analog Devices, Inc. All rights reserved.

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