AD7859 Analog Devices, AD7859 Datasheet - Page 28
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AD7859
Manufacturer Part Number
AD7859
Description
3 V to 5 V Single Supply, 200 kSPS 8-Channel, 12-Bit, Parallel Sampling ADCs
Manufacturer
Analog Devices
Datasheet
1.AD7859.pdf
(28 pages)
Specifications of AD7859
Resolution (bits)
12bit
# Chan
8
Sample Rate
200kSPS
Interface
Byte,Par
Analog Input Type
SE-Bip,SE-Uni
Ain Range
(Vref) p-p,Uni (Vref)
Adc Architecture
SAR
Pkg Type
LCC,QFP
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
AD7859AP
Manufacturer:
ADI/亚德诺
Quantity:
20 000
Company:
Part Number:
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Manufacturer:
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Quantity:
10 000
Company:
Part Number:
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Manufacturer:
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Quantity:
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Company:
Part Number:
AD7859ASZ
Manufacturer:
Analog Devices Inc
Quantity:
10 000
Part Number:
AD7859ASZ
Manufacturer:
ADI/亚德诺
Quantity:
20 000
Company:
Part Number:
AD7859ASZ-REEL
Manufacturer:
Analog Devices Inc
Quantity:
10 000
Company:
Part Number:
AD7859BS
Manufacturer:
AD
Quantity:
1 831
Part Number:
AD7859BSZ
Manufacturer:
ADI/亚德诺
Quantity:
20 000
Company:
Part Number:
AD7859LAS
Manufacturer:
ADI
Quantity:
586
Part Number:
AD7859LASZ
Manufacturer:
ADI/亚德诺
Quantity:
20 000
PAGE INDEX
Topic
FEATURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
GENERAL DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
PRODUCT HIGHLIGHTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
TIMING SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . 4
ABSOLUTE MAXIMUM RATINGS . . . . . . . . . . . . . . . . . . . . 5
ORDERING GUIDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
PINOUTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
TERMINOLOGY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
PIN FUNCTION DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . 7
AD7859/AD7859L ON-CHIP REGISTERS . . . . . . . . . . . . . . . 8
CONTROL REGISTER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
STATUS REGISTER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
CALIBRATION REGISTERS . . . . . . . . . . . . . . . . . . . . . . . . . 12
CIRCUIT INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . 14
CONVERTER DETAILS . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
TYPICAL CONNECTION DIAGRAM . . . . . . . . . . . . . . . . . 14
ANALOG INPUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
REFERENCE SECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
AD7859/AD7859L PERFORMANCE CURVES . . . . . . . . . . 17
POWER-DOWN OPTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . 18
POWER-UP TIMES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
POWER VS. THROUGHPUT RATE . . . . . . . . . . . . . . . . . . 19
CALIBRATION SECTION . . . . . . . . . . . . . . . . . . . . . . . . . . 21
PARALLEL INTERFACE . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
MICROPROCESSOR INTERFACING . . . . . . . . . . . . . . . . 25
APPLICATIONS HINTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
INDEX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
OUTLINE DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Addressing the On-Chip Registers . . . . . . . . . . . . . . . . . . . . . . 8
Writing/Reading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Addressing the Calibration Registers . . . . . . . . . . . . . . . . . . . 12
Writing to/Reading from the Calibration Registers . . . . . . . . 12
Adjusting the Offset Calibration Register . . . . . . . . . . . . . . . . 13
Adjusting the Gain Calibration Registers . . . . . . . . . . . . . . . . 13
Acquisition Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
DC/AC Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Input Ranges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Transfer Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Calibration Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Calibration on Power-On . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Self-Calibration Description . . . . . . . . . . . . . . . . . . . . . . . . . 21
Self-Calibration Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
System Calibration Description . . . . . . . . . . . . . . . . . . . . . . . 22
System Gain and Offset Interaction . . . . . . . . . . . . . . . . . . . . 23
System Calibration Timing . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Grounding and Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Evaluating the AD7859/AD7859L Performance . . . . . . . . . . 27
Page
–28–
0.048 (1.21)
0.042 (1.07)
0.037 (0.95)
0.026 (0.65)
0.040 (1.02)
0.032 (0.82)
0.398 (10.1)
0.390 (9.9)
(0.50)
0.020
R
7
17
18
6
0.096 (2.45)
0.077 (1.95)
0.083 (2.1)
0.048 (1.21)
0.042 (1.07)
MAX
Dimensions shown in inches and (mm).
OUTLINE DIMENSIONS
0.695 (17.65)
0.685 (17.40)
0.656 (16.66)
0.650 (16.51)
IDENTIFIER
TOP VIEW
0.040 (1.02)
0.032 (0.82)
PIN 1
8
0
44-Lead PLCC
44-Pin PQFP
SQ
SQ
(P-44A)
(S-44)
44
34
0.016 (0.4)
0.012 (0.3)
33
0.056 (1.42)
0.042 (1.07)
1
40
PIN 1
28
39
29
0.557 (14.15)
0.537 (13.65)
0.397 (10.1)
0.390 (9.9)
TOP VIEW
0.180 (4.57)
0.165 (4.19)
0.110 (2.79)
0.085 (2.16)
0.033 (0.85)
0.029 (0.75)
0.032 (0.81)
0.026 (0.66)
0.025 (0.63)
0.015 (0.38)
0.021 (0.53)
0.013 (0.33)
0.050
(1.27)
BSC
0.040 (1.01)
0.025 (0.64)
0.63 (16.00)
0.59 (14.99)
23
11
12
22