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 DissipationApplication·Optical MEMS Mirror Control
·Industrial Process Control
·Data Acquisition
·Instrumentation
·CommunicationSpecificationsAnalog Inputs
IND, INC, INB . . . . . . . . . . . . . . . . . . . . . . . .11 V to +30 V
INA, REF, INGND, REFGND, AGND . . .0.3 V to AVDD + 0.3 V
ADC Ground Voltage Differences
AGND_ADC, DGND_ADC, OGND . . . . . . . . . . . . . . . . .±0.3 V
ADC Supply Voltages
AVDD, DVDD, OVDD . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 V
AVDD to DVDD, AVDD to OVDD . . . . . . . . . . . . . . . . . . .±7 V
DVDD to OVDD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .±7 V
ADC Digital Inputs . . . . . . . . . . . . . 0.3 V to DVDD + 0.3 V
VDD_DAC to AGND_DAC . . . . . . . . . . . . . . . 0.3 V to +6 V
DAC Digital Input Voltage to
DGND_DAC . . . . . . . . . . . . . . . . .. .0.3 V to DVDD + 0.3 V
VOUT_DAC to AGND_DAC . . . . . . . 0.3 V to DVDD + 0.3 V
AGND_DAC to DGND_DAC . . . . . . . . . . . . 0.3 V to +0.3 V
DAC Input Current to Any DAC Pin Except Supplies . . ±10 mA
Amplifier Supply Voltage (VS1, VS2) . . . . . . . . . . . . . . . 12.6 V
Amplifier Input Voltage (Common Mode) . . . . . . . ±VS ±0.5 V
Amplifier Differential Input Voltage . . . . . . . . . . . . . . . ±3.4 V
Amplifier Output Short Circuit
Duration . . . . . . . . . . . . . . Observe Power Derating Curves
Resistor Instantaneous Voltage Drop . . . . . . . . . . . . . ±50 V
Internal Power Dissipation . . . . . . . . . . . . .(TJ Max TA)/JA
Thermal Resistance JA
10 mm CSPBGA . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42 /W
Maximum Junction Temperature (TJ Max) . . . . . . . . . . .150
Operating Temperature Range . . . . . . . . . . 40 to +85
Storage Temperature Range . . . . . . . . . . . 65 to +150
Lead Temperature . . . . . . . . . . . . . . . . . . . . . 225 , 15 sec
*Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
DescriptionThe AD15700 is a precision component to interface analog input and output channels to a digital processor. It is ideal for arealimited 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 incorporates 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 s. 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 V/ offset drift provide ADC and DAC buffering capability.The center tapped 3 kW resistors are precision resistor networks with 2 ppm/ 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.
AD15700 Data Sheet
