SPT5216 Ver la hoja de datos (PDF) - Signal Processing Technologies
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SPT5216 Datasheet PDF : 10 Pages
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SPT5216
16-BIT ULTRAHIGH SPEED DAC
FEATURES
• Fast Settling Time - 150 nsec
• Excellent Linearity T. C. 1.5 ppm/°C
• On-Chip Band-Gap Voltage Reference
• On-Chip Application Resistors for Gain Selection
• TTL Compatible Inputs
APPLICATIONS
• High Speed Analog-to-Digital Converters
• Automatic Test Equipment
• Digital Attenuators
• Digital Communication Equipment
• Waveform Generators
GENERAL DESCRIPTION
The SPT5216 is a monolithic, high-performance, 16-bit digi-
tal-to-analog converter with unmatched speed and accuracy.
With its 150 nanosecond settling time, it is the highest speed
16-bit DAC in the industry. Unique features include the band-
gap voltage reference and precision application resistors
which greatly simplify device application. Unlike other high
speed DACs, the SPT5216 can be used in either a current-
output or voltage-output mode.
The internal application resistors support output range selec-
tions of 0 to +10, 0 to +5, -5 to +5, and -2.5 to +2.5 volts. These
internal resistors, used in conjunction with an external op
amp, provide current-to-voltage conversion. Because of the
high compliance voltage of the DAC output (±2.5 volts), the
SPT5216 can also provide a direct voltage drive into a high
impedance load without an external op amp.
The SPT5216 operates with ±15 volt analog supplies, a
separate +5 V digital supply and separate analog and digital
grounds to provide maximum noise immunity. All logic input
levels are TTL and 5 volt CMOS compatible. Laser-trimmed
thin film technology ensures accuracy over time and environ-
mental changes.
The SPT5216 is available in 32-lead sidebrazed DIP and 44-
lead cerquad packages over the commercial temperature
range. It is also available in die form.
BLOCK DIAGRAM
VCC Ref
(+15 V) Out
Gain
Ref
Adj
In
BPO
VDD
(+5 V)
DAC
RTN
1
DAC
RTN
Sense
DAC
RTN
2
2 kΩ
Precision Thin Film
Resistor Network
1 kΩ
1 kΩ
DAC Out
5 V FSR
10 V FSR
Bandgap
VREF
Gain
Adj
gm
Switch
Bias
Network
VEE (-15 V)
VEE (-15 V)
AGND
DGND
D15
D14
(MSB)
D0
(LSB)
Signal Processing Technologies, Inc.
4755 Forge Road, Colorado Springs, Colorado 80907, USA
Phone: (719) 528-2300 FAX: (719) 528-2370
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