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Details, datasheet, quote on part number:AD1672AP
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| Part: | AD1672AP |
| Category: | Data Conversion => ADC (Analog to Digital Converters) => 10-14 bit |
| Description: | Complete 12-Bit, 3 MSPS Monolithic A/D Converter |
| Company: | Analog Devices |
| Datasheet: | Download AD1672AP datasheet File size : 477 kB |
| Request For quote: | Find where to buy AD1672AP
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Datasheet text preview:
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FEATURES Single Supply Pin Configurable Input Voltage Ranges Power Dissipation: 240 mW No Missing Codes Guaranteed Differential Nonlinearity Error: 0.5 LSB Complete: On-Chip Sample-and-Hold Amplifier and Voltage Reference Signal-to-Noise and Distortion Ratio: 68 dB Spurious-Free Dynamic Range: 77 dB Out of Range Indicator Binary Output Data Digital I/Os Compatible with +5 V or +3.3 V Logic 28-Pin PLCC Package
Complete 12-Bit, 3 MSPS Monolithic A/D Converter AD1672
input combined with the power and cost savings over previously available solutions will enable new designs in communications, imaging and medical applications. The AD1672 provides both reference output and reference input pins allowing the onboard reference to serve as a system reference. An external reference can also be chosen to suit the dc accuracy and temperature drift requirements of the application. The digital output data is presented in a straight binary output format for the unipolar input ranges of 0 V to 2.5 V and 0 V to 5.0 V. For the bipolar input range of 2.5 V to +2.5 V, the digital output data is presented in an offset binary format. An out-of-range (OTR) signal indicates an overflow condition. It can be used with the most significant bit to determine low or high overflow. The AD1672 is packaged in a 28-pin PLCC package and is specified for operation from 40°C to +85°C.
PRODUCT HIGHLIGHT
PRODUCT DESCRIPTION
The AD1672 is a monolithic, single supply 12-bit, 3 MSPS analog-to-digital converter with an on-chip, high performance sample-and-hold amplifier (SHA) and voltage reference. The AD1672 uses a multistage pipelined architecture with output error correction logic to provide 12-bit accuracy at 3 MSPS data rates and guarantees no missing codes over the full operating temperature range. The AD1672 combines a high performance BiCMOS process and a novel architecture to achieve its high performance levels. The fast settling input SHA is equally suited for both multiplexed systems that switch negative to positive full-scale voltage levels in successive channels and sampling single-channel inputs at frequencies up to the Nyquist rate. The AD1672's wideband
The AD1672 offers a complete single-chip sampling 12-bit, 3 MSPS analog-to-digital conversion function in a 28-pin PLCC package. The AD1672 at 240 mW consumes a fraction of the power of presently available solutions and provides exceptional performance relative to other monolithic solutions. OUT OF RANGE (OTR)--The OTR output bit indicates when the input signal is beyond the AD1672's input range. Ease-of-Use--The single supply AD1672 is complete with SHA voltage reference and pin strappable input ranges. It is compatible with a wide range of amplifiers.
FUNCTIONAL BLOCK DIAGRAM
AIN1 & 2 THA REF IN REFCOM REF AMP
ADC
AD1672
THA THA
DAC
ADC
THA
DAC
ADC
DAC
ADC
NOISE REDUCTION
DAC AMP 4 4 3 CORRECTION LOGIC BANDGAP REFERENCE REFCOM LATCHES CLOCK TIMER 4
2.5V REF OUTPUT
OUTPUT DATA 12 BITS
CLOCK INPUT
REV. 0
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 which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. © Analog Devices, Inc., 1995 One Technology Way, P.O. Box 9106, Norwood. MA 02062-9106, U.S.A. Tel: 617/329-4700 Fax: 617/326-8703
AD1672SPECIFICATIONS
DC SPECIFICATIONS (T
Parameter RESOLUTION MAX CONVERSION RATE ACCURACY Integral Nonlinearity (INL) Differential Nonlinearity (DNL) No Missing Codes Offset Error Zero Error1 Gain Error2 POWER SUPPLY REJECTION3 VCC (5.0 V ± 0.25 V) VDD (5.0 V ± 0.25 V) VDRDD (3.0 V to 5.25 V) ANALOG INPUT Input Ranges 2.5 V Range Unipolar 5.0 V Range Unipolar 5.0 V Bipolar Input Resistance 2.5 V Input Range 5.0 V Input Ranges Input Capacitance INTERNAL VOLTAGE REFERENCE Output Voltage Output Current4 REFERENCE INPUT RESISTANCE POWER SUPPLIES Supply Voltages VCC VDD DRVDD Supply Current IVCC IV D D IDRVDD POWER CONSUMPTION TEMPERATURE RANGE 40
MIN
to TMAX with VCC = +5.0 V, VDD = +5.0 V, DRVDD = +5.0 V, fSAMPLE = 3 MHz unless otherwise noted)
Min 12 3 2.5 1.0 0.75 0.75 1.50 0.30 0.30 0.10 ± 1.0 ± 0.5 12 Bits Guaranteed ± 0.20 ± 0.20 ± 0.30 2.5 1.5 0.75 0.75 1.50 0.30 0.30 0.10 AD1672AP Typ Max Units Bits MHz LSB LSB % FSR % FSR % FSR % FSR % FSR % FSR
0.0 0.0 2.5
2.5 5.0 2.5
Volts Volts Volts k k pF Volts mA k
1.5 3.0
2.0 4.0 10 2.5 8.0
2.5 5.0
2.475 0.5 6.0
2.525 10.0
4.75 4.75 3.00
5.0 5.0 5.0 46 1.0 0.2 240 25
5.25 5.25 5.25 65 2.0 2.0 363 85
Volts Volts Volts mA mA mA mW °C
NOTES 1 Bipolar Mode. 2 Includes internal reference error. 3 Change in full scale as a function of the dc supply voltage. 4 Current available for external loads. External load should not change during conversion. Specification subject to change without notice.
2
REV. 0
AD1672 AC SPECIFICATIONS 2.5 V to +2.5 V configuration unless otherwise noted)
Parameter SIGNAL-TO-NOISE AND DISTORTION RATIO (S/(N+D)) fINPUT = 100 kHz fINPUT = 500 kHz fINPUT = 1.5 MHz SIGNAL-TO-NOISE RATIO (SNR) fINPUT = 100 kHz fINPUT = 500 kHz fINPUT = 1.5 MHz TOTAL HARMONIC DISTORTION (THD) fINPUT = 100 kHz fINPUT = 500 kHz fINPUT = 1.5 MHz SPURIOUS FREE DYNAMIC RANGE (SFDR) fINPUT = 100 kHz fINPUT = 500 kHz fINPUT = 1.5 MHz INTERMODULATION DISTORTION (IMD)1 FULL POWER BANDWIDTH SMALL SIGNAL BANDWIDTH (20 dB FSR) CODE TRANSITION NOISE APERTURE DELAY APERTURE JITTER ACQUISITION TO FULL-SCALE STEP OVERVOLTAGE RECOVERY TIME
NOTES 1 fs = 490 kHz; fb = 510 kHz typical value for third order products. Specifications subject to change without notice.
(TMIN to TMAX with VCC = +5 .0 V, VDD = +5.0 V, DRVDD = +5.0 V, fSAMPLE = 3 MHz, AIN = 0.5 dB in bipolar
AD1672AP Typ 68 68 60 70 70 67 74 74 60 77 77 61 65 5 20 1/4 9 10 150 150
Min
Max
Units dB dB dB dB dB dB dB dB dB dB dB dB dB MHz MHz LSB rms ns ps rms ns ns
63
66
64
65
DIGITAL SPECIFICATION (T
Parameter
MIN
to TMAX with VCC = +5 .0 V, VDD = +5.0 V, VDRVDD = +5.0 V unless otherwise noted)
Symbol V IH V IL IIH II L CIN V OH V OL COUT Min 3.5 10 10 10 2.4 0.4 5 1.0 10 10 AD1672AP Typ Max Units Volts Volts µA µA pF Volts Volts pF
LOGIC INPUTS High Level Input Voltage Low Level Input Voltage High Level Input Current (VIN = VDD) Low Level Input Current (VIN = 0 V) Input Capacitance LOGIC OUTPUTS High Level Output Voltage (IOH = 0.5 mA) Low Level Output Voltage (IOL = 1.6 mA) Output Capacitance
Specifications subject to change without notice.
REV. 0
3
AD1672
S1 ANALOG INPUT S2
tC tCH tCL
S2
S3
tOD
S3
INPUT CLOCK
S1
DATA OUTPUT OTR
DATA 1
DATA 2
Figure 1. Timing Diagram
SWITCHING SPECIFICATIONS
Parameter Clock Period Clock Pulse Width High Pulse Width Low Output Delay Pipeline Delay (Latency) Symbol tC tCH tCL tOD Value 334 167 167 15 30 2.5 Units ns min ns min ns min ns min ns typ Clock Cycles
ABSOLUTE MAXIMUM RATINGS*
Parameter
With Respect to
Min 0 5 0.5 0.5 0.5 0.5 0.5 6.5 0.5 65
Max +6.5 +6.5 +6.5 +0.5 VDD + 0.5 DRVDD + 0.5 +6.5 VCC + 0.5 +150 +150 +300
Units Volts Volts Volts Volts Volts Volts Volts Volts °C °C °C
VCC ACOM VDD DCOM DRVDD DRCOM ACOM DCOM, DRCOM CLOCK DCOM Digital Outputs DCOM AIN ACOM REFIN ACOM Junction Temperature Storage Temperature Lead Temperature (10 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 ratings for extended periods may effect device reliability.
CAUTION ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. Although the AD1672 features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality.
WARNING!
ESD SENSITIVE DEVICE
4
REV. 0
AD1672
PIN DESCRIPTION ORDERING GUIDE
Symbol DRCOM BIT 12 BIT 211 BIT 1 D R V DD OTR
Pin No. 1 2 312 13 14 15
Model Type P DO DO DO P DO Name and Function Digital Output Driver Ground. Data Bit (LSB). Data Bits. +5 V Digital Output Driver Supply. Out of Range is Active High on the leading edge of Code 0 or the trailing edge of Code 4096. See Output Data Format Table V. Sample Clock. +5 V Digital Supply. Digital Ground. Analog Ground. 2.5 V Reference Output (Decouple with 1 µF ceramic capacitor to REFCOM). Analog Input. Analog Input. Reference Input. Noise Compensation (Decouple with 1 µF ceramic capacitor to ACOM). Noise Compensation (Decouple with 1 µF ceramic capacitor to ACOM). Analog Ground. +5 V Analog Supply.
BIT 9 5 BIT 8 6 BIT 7 7 BIT 6 8 BIT 5 9 BIT 4 10 BIT 3 11
Temperature Range 40°C to +85°C
PIN CONFIGURATION
BIT 12 (LSB) NCOMP1
Package P-28A
AD1672AP
DRCOM
Data Bit (MSB).
BIT 10 BIT 11
4
3
2
1
28 27 26
PIN 1 IDENTIFIER
VCC
ACOM
25 NCOMP2 24 REFCOM
AD1672
TOP VIEW (Not to Scale)
23 REFIN 22 AIN2 21 AIN1 20 REFOUT 19 REFCOM
CLOCK V DD DCOM REFCOM REFOUT
16 17 18 20
DI P P AO
19, 24 P
12 13 14 15 16 17 18 BIT 2 (MSB) BIT 1 DRVDD CLOCK OTR VDD DCOM
AIN1 AIN2 REFIN NCOMP2
21 22 23 25
AI AI AI AO
NCOMP1
26
AO
ACOM V CC
27 28
P P
TYPE: AI = Analog Input; DI = Digital Input; P = Power; AO = Analog Output; DO = Digital Output.
REV. 0
5
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