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Analog Devices Semiconductor Electronic Components Datasheet



AD15700

1 MSPS 16-/14-Bit Analog I/O Port


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AD15700 pdf
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®/QSPI™/MICROWIRE™/DSP Compatible
132 mW Typical Power Dissipation
APPLICATIONS
Optical MEMS Mirror Control
Industrial Process Control
Data Acquisition
Instrumentation
Communication
GENERAL DESCRIPTION
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/C offset drift provide ADC and DAC buffering capability.
The center tapped 3 kW resistors are precision resistor networks
with 2 ppm/C 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.
FUNCTIONAL BLOCK DIAGRAM
VDD_DAC
DGND_DAC
VREF
14-BIT DAC
CS_DAC
DIN
SCLK
CONTROL
LOGIC
14-BIT DATA LATCH
SERIAL INPUT REGISTER
COMMON
REF
REFGND
IND(4R)
INC(4R)
INB(2R)
INA(R)
INGND
VOUT2
+VS2
+IN2
–IN2
–VS2
PD
RESET
RPAD2
AD15700
1.5k
1.5k
4R
4R
2R
SERIAL
R PORT
SWITCHED
CAP DAC
CLOCK
SAR ADC
CONTROL LOGIC AND
CALIBRATION CIRCUITRY
PARALLEL 16
INTERFACE
1.5k1.5k
RA2 RB2 RC2
WARP CNVST IMPULSE
DVDD
DGND
ADC
VOUT_DAC
AGND_DAC
–IN1
+IN1
+VS1
VOUT1
–VS1
RA1
RB1
RC1
RPAD1
OVDD
OGND
SER/PAR
BUSY
D[15:0]
CS_ADC
RD
OB/2C
BYTESWAP
AVDD
AGND_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/C Ratio
Tracking for Gain Setting.
4. Low Power Consumption.
Typically 132 mW at maximum performance levels.
5. Industrial Temperature Range: –40C to +85C.
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.
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 © 2003 Analog Devices, Inc. All rights reserved.



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AD15700 pdf
AD15700–SPECIFICATIONS
16-BIT ADC ELECTRICAL CHARACTERISTICS
(–40؇C to +85؇C, AVDD = DVDD = 5 V, 0VDD = 2.7 V to 5.25 V, unless
otherwise noted.)
Parameter
Condition
Min Typ Max Unit
RESOLUTION
16 Bits
ANALOG INPUT
Voltage Range
Common-Mode Input Voltage
Analog Input CMRR
Input Impedance
VIND – VINGND
VINGND
fIN = 100 kHz
±4 REF, 0 V to 4 REF, ±2 REF (See Table I)
–0.1 +0.5
74
See Table I
V
dB
THROUGHPUT SPEED
Complete Cycle
Throughput Rate
Time between Conversions
Complete Cycle
Throughput Rate
Complete Cycle
Throughput Rate
In Warp Mode
In Warp Mode
In Warp Mode
In Normal Mode
In Normal Mode
In Impulse Mode
In Impulse Mode
1
0
0
1
1000
1
1.25
800
1.5
666
ms
kSPS
ms
ms
kSPS
ms
kSPS
DC ACCURACY
Integral Linearity Error
No Missing Codes
Transition Noise
Bipolar Zero Error 2, TMIN to TMAX
Bipolar Full-Scale Error2, TMIN to TMAX
Unipolar Zero Error2, TMIN to TMAX
Unipolar Full-Scale Error2, TMIN to TMAX
Power Supply Sensitivity
± 5 V Range, Normal or
Impulse Modes
Other Range or Mode
AVDD = 5 V ± 5%
AC ACCURACY
Signal-to-Noise
Spurious-Free Dynamic Range
Total Harmonic Distortion
Signal-to-(Noise + Distortion)
–3 dB Input Bandwidth
fIN = 20 kHz
fIN = 250 kHz
fIN = 250 kHz
fIN = 20 kHz
fIN = 250 kHz
fIN = 20 kHz
fIN = 250 kHz, –60 dB Input
–2.5
16
–45
–0.38
–0.18
–0.76
89
88.5
0.7
± 0.1%
± 9.5
90
90
100
–100
–100
90
30
9.6
+2.5
+45
+0.38
+0.18
+0.76
–96
LSB1
Bits
LSB
LSB
% of FSR
% of FSR
% of FSR
% of FSR
LSB
dB3
dB
dB
dB
dB
dB
dB
MHz
SAMPLING DYNAMICS
Aperture Delay
Aperture Jitter
Transient Response
Full-Scale Step
2 ns
5 ps rms
250 ns
REFERENCE
External Reference Voltage Range
External Reference Current Drain
DIGITAL INPUTS
Logic Levels
VIL
VIH
IIL
IIH
1 MSPS Throughput
2.3
–0.3
+2.0
–1
–1
2.5
200
3.0 V
mA
+0.8
DVDD + 0.3
+1
+1
V
V
mA
mA
–2– REV. A



Part Number AD15700
Description 1 MSPS 16-/14-Bit Analog I/O Port
Maker Analog Devices - Analog Devices
Total Page 30 Pages
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