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PDF AD7366-5 Data sheet ( Hoja de datos )
| Número de pieza | AD7366-5 | |
| Descripción | Simultaneous Sampling SAR ADCs | |
| Fabricantes | Analog Devices | |
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True Bipolar Input, 12-/14-Bit,
2-Channel, Simultaneous Sampling SAR ADCs
AD7366-5/AD7367-5
FEATURES
Dual 12-bit/14-bit, 2-channel ADCs
True bipolar analog inputs
Programmable input ranges
±10 V, ±5 V, 0 V to +10 V
±12 V with +3 V external reference
Throughput rate: 500 kSPS
Simultaneous conversion with read in less than 2 μs
High analog input impedance
Low current consumption
5.1 mA typical in normal mode
320 nA typical in shutdown mode
AD7366-5
72 dB SNR at 50 kHz input frequency
12-bit no missing codes
AD7367-5
76 dB SNR at 50 kHz input frequency
14-bit no missing codes
Accurate on-chip reference: 2.5 V ± 0.2%
–40°C to +85°C operation
High speed serial interface
SPI-/QSPI-/MICROWIRE-/DSP-compatible
iCMOS process technology
Available in a 24-lead TSSOP
GENERAL DESCRIPTION
The AD7366-5/AD7367-51 are dual, 12-/14-bit, low power,
successive approximation analog-to-digital converters (ADCs)
that feature throughput rates up to 500 kSPS. Each device contains
two ADCs, which are both preceded by a 2-channel multiplexer,
and a low noise, wide bandwidth, track-and-hold amplifier.
The AD7366-5/AD7367-5 are fabricated on the Analog
Devices, Inc., industrial CMOS process (iCMOS®)2, which is
a technology platform combining the advantages of low and
high voltage CMOS. The process allows the parts to accept
high voltage bipolar signals in addition to reducing power
consumption and package size. The AD7366-5/AD7367-5 can
accept true bipolar analog input signals in the ±10 V range,
±5 V range, and 0 V to +10 V range.
1 Protected by U.S. Patent No. 6,731,232.
2 For analog systems designers within industrial/instrumentation equipment
OEMs who need high performance ICs at higher voltage levels, iCMOS is a
technology platform that enables the development of analog ICs capable of
+30 V and operating at ±15 V supplies while allowing dramatic reductions in
power consumption and package size, and increased ac and dc performance.
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 that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
FUNCTIONAL BLOCK DIAGRAM
VDD
DCAPA
AVCC
DVCC
REF
VA1
MUX
VA2
VB1
MUX
VB2
BUF
AD7366-5/AD7367-5
T/H
T/H
BUF
12-/14-BIT
SUCCESSIVE
APPROXIMATION
ADC
OUTPUT
DRIVERS
CONTROL
LOGIC
12-/14-BIT
SUCCESSIVE
APPROXIMATION
ADC
OUTPUT
DRIVERS
DOUTA
SCLK
CNVST
CS
BUSY
ADDR
RANGE0
RANGE1
REFSEL
VDRIVE
DOUTB
AGND AGND
VSS
DCAPB
Figure 1.
DGND
The devices have an on-chip 2.5 V reference that can be disabled to
allow the use of an external reference. If a 3 V reference is applied
to the DCAPA and DCAPB pins, the AD7366-5/AD7367-5 can
accept a true bipolar ±12 V analog input. Minimum ±12 V VDD
and VSS supplies are required for the ±12 V input range.
PRODUCT HIGHLIGHTS
1. True bipolar analog input signals can be accepted, as well
as ±10 V, ±5 V, ±12 V (with external reference), and 0 V to
+10 V unipolar signals.
2. Two complete ADC functions allow simultaneous
sampling and conversion of two channels.
3. A 500 kSPS serial interface is SPI-/QSPI™-/MICROWIRE™-/
DSP-compatible.
Table 1. Related Products
Device
Resolution Throughput Rate
AD7366
12-Bit
1 MSPS
AD7366-5 12-Bit
500 kSPS
AD7367
14-Bit
1 MSPS
AD7367-5 14-Bit
500 kSPS
No. of Channels
Dual, 2-channel
Dual, 2-channel
Dual, 2-channel
Dual, 2-channel
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113 ©2007-2011 Analog Devices, Inc. All rights reserved.
1 page  
AD7366-5/AD7367-5
AD7367-5 SPECIFICATIONS
AVCC = DVCC = 4.75 V to 5.25 V; VDD = 5 V to 16.5 V; VSS = −16.5 V to −5 V; VDRIVE = 2.7 V to 5.25 V; fSAMPLE = 500 kSPS; fSCLK = 20 MHz;
VREF = 2.5 V internal/external; TA = −40°C to +85°C, unless otherwise noted.
Table 3.
Parameter
DYNAMIC PERFORMANCE
Signal-to-Noise Ratio (SNR)1
Signal-to-Noise (+ Distortion) Ratio (SINAD)1
Total Harmonic Distortion (THD)1
Spurious-Free Dynamic Range (SFDR)1
Intermodulation Distortion (IMD)1
Second-Order Terms
Third-Order Terms
Channel-to-Channel Isolation1
SAMPLE AND HOLD
Aperture Delay2
Aperture Jitter2
Aperture Delay Matching2
Full Power Bandwidth
Min
74
73
DC ACCURACY
Resolution
Integral Nonlinearity (INL)1
Differential Nonlinearity (DNL)1
Positive Full-Scale Error1
14
Positive Full-Scale Error Match1
Zero Code Error1
Zero Code Error Match1
Negative Full-Scale Error1
Negative Full-Scale Error Match1
ANALOG INPUT
Input Voltage Ranges
(Programmed via RANGE Pins)
DC Leakage Current
Input Capacitance
Input Impedance
Typ Max Unit
76
75
−84 −78
−87 −79
dB
dB
dB
dB
−91 dB
−89 dB
−90 dB
40
±100
35
8
10
ns
ps
ps
MHz
MHz
Bits
±2 ±3.5 LSB
±0.5 ±0.90 LSB
±4 ±25 LSB
±5 ±25 LSB
±3 LSB
±0.2 LSB
±1 ±10 LSB
±5 ±25 LSB
±3 LSB
±0.2 LSB
±4 ±25 LSB
±5 ±25 LSB
±3 LSB
±0.2 LSB
±10 V
±0.01
9
13
500
2.5
250
1.2
±5
0 to 10
±1
V
V
μA
pF
pF
kΩ
MΩ
kΩ
MΩ
Test Conditions/Comments
fIN = 50 kHz sine wave
fa = 49 kHz, fb = 51 kHz
@ 3 dB, ±10 V range
@ 0.1 dB, ±10 V range
Guaranteed no missed codes to 14 bits
±5 V and ±10 V analog input range
0 V to 10 V analog input range
Matching from ADC A to ADC B
Channel-to-channel matching for ADC A and ADC B
±5 V and ±10 V analog input range
0 V to 10 V analog input range
Matching from ADC A to ADC B
Channel-to-channel matching for ADC A and ADC B
±5 V and ±10 V analog input range
0 V to 10 V analog input range
Matching from ADC A to ADC B
Channel-to-channel matching for ADC A and ADC B
See Table 7
When in track, ±10 V range
When in track, ±5 V or 0 V to +10 V range
For ±10 V @ 500 kSPS
For ±10 V @ 100 kSPS
For ±5 V/0 V to +10 V @ 500 kSPS
For ±5 V/0 V to +10 V @ 100 kSPS
Rev. B | Page 5 of 28
5 Page 
AD7366-5/AD7367-5
TYPICAL PERFORMANCE CHARACTERISTICS
TA = 25°C, unless otherwise noted.
1.0
0.8
0.6
0.4
0.2
0
–0.2
–0.4
–0.6
–0.8
–1.0
0
2000
4000
6000
VADVDCC= =155VfVS,V,V=DDTSRV5SAI0CV=0=CEk–2==S15P553°SCVVV
INTERNAL REFERENCE
8000 10000 12000 14000 16000
CODE
Figure 3. AD7367-5 Typical DNL
2.0
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
–2.0
0
2000
4000
6000
VADVDCC= =155VfVS,V,V=DDTSRV5SAI0CV=0=CEk–2==S15P553°CSVVV
INTERNAL REFERENCE
8000 10000 12000 14000 16000
CODE
Figure 4. AD7367-5 Typical INL
–76 0V TO +10V RANGE
–78
±10V RANGE
–80 ±5V RANGE
–82
–84
–86
10
VADVDCC= =155VfVS,V,V=DDSRV5SI0CV=0CEk–==S1P553SVVV
INTERNAL REFERENCE
100
ANALOG INPUT FREQUENCY (kHz)
1000
Figure 6. THD vs. Analog Input Frequency
–66
VAfVSDDV=DRCICV5=E0=10=5k5VSV3,VP, VDSSVSC=C
= 5V
–15V
INTERNAL REFERENCE
–71 ±5V RANGE
RIN = 3000Ω
–76
RIN = 5100Ω
RIN = 2000Ω
RIN = 1300Ω
RIN = 470Ω
–81
–86
10
RIN = 56Ω RIN = 240Ω
RIN = 3900Ω
100
ANALOG INPUT FREQUENCY (kHz)
1000
Figure 7. THD vs. Analog Input Frequency for Various Source Impedances
0
–20
–40
–60
–80
–100
–120
–140
–160
0
VADVDCC=
=155VV,V,VDDSRVSICV=CE
= 5V
–15V
= 3V
fS = 500kSPS, fIN = 50kHz
INTERNAL REFERENCE
SNR = 76dB, SINAD = 75dB
50 100 150
FREQUENCY (kHz)
Figure 5. AD7367-5 FFT
200
250
77
75 ±10V RANGE
73 0V TO +10V RANGE
71
69
VAfVSDDV=DRCICV5=E0=10=5k5VSV3,VP, VDSSVSC=C
= 5V
–15V
±5V RANGE
INTERNAL REFERENCE
67
10 100
ANALOG INPUT FREQUENCY (kHz)
Figure 8. SINAD vs. Analog Input Frequency
1000
Rev. B | Page 11 of 28
11 Page | ||
| Páginas | Total 28 Páginas | |
| PDF Descargar | [ Datasheet AD7366-5.PDF ] | |
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