1 MSPS 16-/14-Bit
Analog I/O Port
16-Bit A/D Converter
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
132 mW Typical Power Dissipation
Optical MEMS Mirror Control
Industrial Process Control
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
14-BIT DATA LATCH
SERIAL INPUT REGISTER
CONTROL LOGIC AND
RA2 RB2 RC2
WARP CNVST IMPULSE
1. Fast Throughput ADC.
The AD15700 incorporates a high speed, 1 MSPS, 16-bit
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: –40∞C to +85∞C.
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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
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