EVAL-AD7944EBZ Analog Devices Inc, EVAL-AD7944EBZ Datasheet - Page 9

• Manufacturer Part Number: EVAL-AD7944EBZ
• Description: BOARD EVAL FOR AD7944
• Manufacturer: Analog Devices Inc
• Series: PulSAR®r

Specifications of EVAL-AD7944EBZ

• Number Of Adc's: 1
• Number Of Bits: 14
• Sampling Rate (per Second): 2.5M
• Data Interface: SPI™, QSPI™, MICROWIRE™, and DSP
• Inputs Per Adc: 1 Differential
• Input Range: 0 ~ 5 V
• Voltage Supply Source: Analog and Digital
• Operating Temperature: -40°C ~ 85°C
• Utilized Ic / Part: AD7944
• Silicon Manufacturer: Analog Devices
• Application Sub Type: ADC
• Kit Application Type: Data Converter
• Silicon Core Number: AD7944
• Kit Contents: Board And Literature
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

TYPICAL PERFORMANCE CHARACTERISTICS
AVDD = DVDD = VIO = 2.5 V, BVDD = 5.0 V, V
Figure 6. Histogram of DC Input at Code Center (External Reference)
Figure 7. Histogram of DC Input at Code Center (Internal Reference)
140,000
120,000
100,000
140,000
120,000
100,000
–0.2
–0.4
–0.6
–0.8
–1.0
80,000
60,000
40,000
20,000
80,000
60,000
40,000
20,000
1.0
0.8
0.6
0.4
0.2
0
0
0
0
8188
8188
0
0
Figure 5. Integral Nonlinearity vs. Code
8189
8189
0
4096
0
8190
8190
2
2
4899
8191
5236
8191
CODE IN HEX
CODE IN HEX
CODE
8192
126,022
124,396
8192
8192
POSITIVE INL = +0.12 LSB
NEGATIVE INL = –0.20 LSB
8193
149
1438
8193
12,288
8194
8194
0
0
8195
8195
REF
0
0
= 5.0 V, external reference (PDREF is high, REFIN is low), unless otherwise noted.
16,384
8196
8196
0
0
Rev. A | Page 9 of 28
Figure 10. Histogram of DC Input at Code Transition (Internal Reference)
Figure 9. Histogram of DC Input at Code Transition (External Reference)
–0.2
–0.4
–0.6
–0.8
–1.0
80,000
70,000
60,000
50,000
40,000
30,000
20,000
10,000
80,000
70,000
60,000
50,000
40,000
30,000
20,000
10,000
1.0
0.8
0.6
0.4
0.2
0
0
0
0
8188
8189
0
0
Figure 8. Differential Nonlinearity vs. Code
8189
8190
4096
0
0
8190
8191
324
7
67,825
62,982
CODE IN HEX
CODE IN HEX
8191
8192
CODE
8192
67,766
63,238
8192
8193
POSITIVE DNL = +0.11LSB
NEGATIVE DNL = –0.11LSB
8193
8194
12,288
0
2
8194
8195
0
0
AD7944
8195
8196
16,384
0
0