http://www.www.datasheet4u.com

900,000+ Datasheet PDF Search and Download

Datasheet4U offers most rated semiconductors datasheets pdf




Analog Devices Semiconductor Electronic Components Datasheet

AD1671 Datasheet

Complete 12-Bit 1.25 MSPS Monolithic A/D Converter

No Preview Available !

AD1671 pdf
a
Complete 12-Bit 1.25 MSPS
Monolithic A/D Converter
AD1671
FEATURES
Conversion Time: 800 ns
1.25 MHz Throughput Rate
Complete: On-Chip Sample-and-Hold Amplifier and
Voltage Reference
Low Power Dissipation: 570 mW
No Missing Codes Guaranteed
Signal-to-Noise Plus Distortion Ratio
fIN = 100 kHz: 70 dB
Pin Configurable Input Voltage Ranges
Twos Complement or Offset Binary Output Data
28-Pin DIP and 28-Pin Surface Mount Package
Out of Range Indicator
FUNCTIONAL BLOCK DIAGRAM
AIN1
AIN2
SHA
OUT UPO/BPO ENCODE VCC ACOM VEE VLOGIC DCOM
5k
S/H
RANGE
5k SELECT
X4
3-BIT
FLASH
DAC
3-BIT
FLASH
DAC
COARSE
4-BIT
FLASH
8-BIT
LADDER
MATRIX
REF IN
REF OUT
3 3 4 FINE
4-BIT
CORRECTION LOGIC
FLASH
2.5V
REF
AD1671
8
LATCHES
12
4
PRODUCT DESCRIPTION
The AD1671 is a monolithic 12-bit, 1.25 MSPS analog-to-
digital converter with an on-board, high performance sample-
and-hold amplifier (SHA) and voltage reference. The AD1671
guarantees no missing codes over the full operating tempera-
ture range. The combination of a merged high speed bipolar/
CMOS process and a novel architecture results in a combi-
nation of speed and power consumption far superior to pre-
viously available hybrid implementations. Additionally, the
greater reliability of monolithic construction offers improved
system reliability and lower costs than hybrid designs.
The fast settling input SHA is equally suited for both multi-
plexed systems that switch negative to positive full-scale
voltage levels in successive channels and sampling inputs at
frequencies up to and beyond the Nyquist rate. The AD1671
provides both reference output and reference input pins, al-
lowing the on-board reference to serve as a system reference.
An external reference can also be chosen to suit the dc accu-
racy and temperature drift requirements of the application.
The AD1671 uses a subranging flash conversion technique,
with digital error correction for possible errors introduced in
the first part of the conversion cycle. An on-chip timing gen-
erator provides strobe pulses for each of the four internal
flash cycles. A single ENCODE pulse is used to control the
converter. The digital output data is presented in twos
complement or offset binary output format. An out-of-range
signal indicates an overflow condition. It can be used with
the most significant bit to determine low or high overflow.
REF COM
OTR MSB
BIT 1 –12
DAV
The performance of the AD1671 is made possible by using high
speed, low noise bipolar circuitry in the linear sections and low
power CMOS for the logic sections. Analog Devices’ ABCMOS-1
process provides both high speed bipolar and 2-micron CMOS
devices on a single chip. Laser trimmed thin-film resistors are
used to provide accuracy and temperature stability.
The AD1671 is available in two performance grades and three
temperature ranges. The AD1671J and K grades are available
over the 0°C to +70°C temperature range. The AD1671A grade
is available over the –40°C to +85°C temperature range. The
AD1671S grade is available over the –55°C to +125°C tempera-
ture range.
PRODUCT HIGHLIGHTS
The AD1671 offers a complete single chip sampling 12-bit,
1.25 MSPS analog-to-digital conversion function in a 28-pin
package.
The AD1671 at 570 mW consumes a fraction of the power of
currently available hybrids.
An OUT OF RANGE output bit indicates when the input sig-
nal is beyond the AD1671’s input range.
Input signal ranges are 0 V to +5 V unipolar or ± 5 V bipolar,
selected by pin strapping, with an input resistance of 10 k.
The input signal range can also be pin strapped for 0 V to +2.5 V
unipolar or ±2.5 V bipolar with an input resistance of 10 M.
Output data is available in unipolar, bipolar offset or bipolar
twos complement binary format.
REV. B
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.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 617/329-4700
Fax: 617/326-8703


Analog Devices Semiconductor Electronic Components Datasheet

AD1671 Datasheet

Complete 12-Bit 1.25 MSPS Monolithic A/D Converter

No Preview Available !

AD1671 pdf
AD1671–SPECIFICATIONS
DC SPECIFICATIONS (TMIN to TMAX with VCC = +5 V ؎ 5%, VLOGIC = +5 V ؎ 10%, VEE = –5 V ؎ 5%, unless otherwise noted)
Parameter
AD1671J/A/S
Min Typ
RESOLUTION
12
CONVERSION TIME
ACCURACY
Integral Nonlinearity (INL)
(S Grade)
Differential Nonlinearity (DNL)
No Missing Codes
Unipolar Offsets1 (+25°C)
Bipolar Zero1 (+25°C)
Gain Error1, 2 (+25°C)
TEMPERATURE COEFFICIENTS3
Unipolar Offset
(S Grade)
Bipolar Zero
(S Grade)
Gain Error3
(S Grade)
Gain Error4
POWER SUPPLY REJECTION5
VCC (+5 V ± 0.25 V)
(S Grade)
VLOGIC (+5 V ± 0.25 V)
(S Grade)
VEE (–5 V ± 0.25 V)
(S Grade)
± 1.5
11
11 Bits Guaranteed
0.1
ANALOG INPUT
Input Ranges
Bipolar
Unipolar
Input Resistance
(0 V to +2.5 V or ± 2.5 V Range)
(0 V to +5.0 V or ± 5 V Range)
Input Capacitance
Aperture Delay
Aperture Jitter
–2.5
–5.0
0
0
10
8 10
10
15
20
INTERNAL VOLTAGE REFERENCE
Output Voltage
Output Current
Unipolar Mode
Bipolar Mode
2.475
2.5
LOGIC INPUTS
High Level Input Voltage, VIH
Low Level Input Voltage, VIL
High Level Input Current, IIH (VIN = VLOGIC)
Low Level Input Current, ILL (VIN = 0 V)
Input Capacitance, CIN
LOGIC OUTPUTS
High Level Output Voltage, VOH (IOH = 0.5 mA)
Low Level Output Voltage, VOL (IOL = 1.6 mA)
POWER SUPPLIES
Operating Voltages
VCC
VLOGIC
VEE
Operating Current
ICC
ILOGIC6
IEE
POWER CONSUMPTION
2.0
–10
–10
2.4
+4.75
+4.5
–4.75
5
55
3
–55
570
TEMPERATURE RANGE (SPECIFIED)
J/K
A
S
0
–40
–55
NOTES
1Adjustable to zero with external potentiometers.
2Includes internal voltage reference error.
3+25°C to TMIN and +25°C to TMAX
4Excludes internal reference drift.
5Change in gain error as a function of the dc supply voltage.
6Tested under static conditions. See Figure 15 for typical curve of ILOGIC vs. load capacitance at maximum tC.
Specifications subject to change without notice.
Max
800
± 2.5
± 3.0
±9
± 10
0.35
± 25
± 25
± 25
± 30
± 30
± 40
± 20
±4
±5
±4
±5
±4
±5
+2.5
+5.0
+2.5
+5.0
12
2.525
+2.5
+1.0
0.8
+10
+10
0.4
+5.25
+5.5
–5.25
68
5
–68
750
+70
+85
+125
AD1671K
Min Typ Max
12
800
± 0.7
12
12 Bits Guaranteed
0.1
± 2.5
±9
± 10
0.35
± 25
± 25
± 30
± 20
±4
±4
±4
Units
Bits
ns
LSB
Bits
LSB
LSB
% FSR
ppm/°C
ppm/°C
ppm/°C
ppm/°C
LSB
LSB
LSB
–2.5
–5.0
0
0
8
2.475
2.0
–10
–10
2.4
+4.75
+4.5
–4.75
0
–40
–55
+2.5
Volts
+5.0
Volts
+2.5
Volts
+5.0
Volts
10 M
10 12 k
10 pF
15 ns
20 ps
2.5 2.525 Volts
+2.5
+1.0
mA
mA
Volts
0.8 Volts
+10 µA
+10 µA
5 pF
Volts
0.4 Volts
+5.25
+5.5
–5.25
Volts
Volts
Volts
55 68 mA
3 5 mA
–55 –68 mA
570 750 mW
+70
+85
+125
°C
°C
°C
–2– REV. B


Part Number AD1671
Description Complete 12-Bit 1.25 MSPS Monolithic A/D Converter
Maker Analog Devices
Total Page 16 Pages
PDF Download
AD1671 pdf
Download PDF File
AD1671 pdf
View for Mobile



Buy Electronic Components




Related Datasheet

1 AD1671 Complete 12-Bit 1.25 MSPS Monolithic A/D Converter Analog Devices
Analog Devices
AD1671 pdf
2 AD1672 Complete 12-Bit/ 3 MSPS Monolithic A/D Converter Analog Devices
Analog Devices
AD1672 pdf
3 AD1674 12-Bit 100 kSPS A/D Converter Analog Devices
Analog Devices
AD1674 pdf






Part Number Start With

0    1    2    3    4    5    6    7    8    9    A    B    C    D    E    F    G    H    I    J    K    L    M    N    O    P    Q    R    S    T    U    V    W    X    Y    Z

site map

webmaste! click here

contact us

Buy Components