参数资料
型号: AD9785-DPG2-EBZ
厂商: Analog Devices Inc
文件页数: 43/64页
文件大小: 0K
描述: BOARD EVALUATION FOR AD9785
标准包装: 1
系列: TxDAC®
DAC 的数量: 2
位数: 12
采样率(每秒): 800M
数据接口: 串行
设置时间: 22ms
DAC 型: 电流
工作温度: -40°C ~ 85°C
已供物品: 板,缆线,CD
已用 IC / 零件: AD9785
AD9785/AD9787/AD9788
Rev. A | Page 48 of 64
07
09
8-
0
27
ADC
VCO
DAC
INTERPOLATION
RATE
LOOP
FILTER
REFCLK
(PIN 5 AND PIN 6)
0x04 [23:21]
VCO CONTROL
VOLTAGE
0x04 [15]
PLL ENABLE
DAC CLOCK
DATACLK (PIN 37)
0x01 [7:6]
0x04 [14:13]
PLL VCO
DIVISOR
0x04 [12:11]
PLL LOOP
DIVISOR
÷IF
÷N2
÷N1
PLL_LOCK (PIN 65)
0x09 [3]
PHASE
DETECTION
Figure 68. Clock Multiplication Circuit
Table 35. Typical VCO Freq Range vs. PLL Band Select Value
PLL Lock Ranges over Temperature, 40°C to +85°C
PLL Band Select
VCO Frequency Range in MHz1
fLOW
fHIGH
111111 (63)
Auto mode
111110 (62)
1975
2026
111101 (61)
1956
2008
111100 (60)
1938
1992
111011 (59)
1923
1977
111010 (58)
1902
1961
111001 (57)
1883
1942
111000 (56)
1870
1931
110111 (55)
1848
1915
110110 (54)
1830
1897
110101 (53)
1822
1885
110100 (52)
1794
1869
110011 (51)
1779
1853
110010 (50)
1774
1840
110001 (49)
1748
1825
110000 (48)
1729
1810
101111 (47)
1730
1794
101110 (46)
1699
1780
101101 (45)
1685
1766
101100 (44)
1684
1748
101011 (43)
1651
1729
101010 (42)
1640
1702
101001 (41)
1604
1681
101000 (40)
1596
1658
100111 (39)
1564
1639
100110 (38)
1555
1606
100101 (37)
1521
1600
100100 (36)
1514
1575
100011 (35)
1480
1553
100010 (34)
1475
1529
100001 (33)
1439
1505
100000 (32)
1435
1489
PLL Lock Ranges over Temperature, 40°C to +85°C
PLL Band Select
VCO Frequency Range in MHz1
fLOW
fHIGH
011111 (31)
1402
1468
011110 (30)
1397
1451
011101 (29)
1361
1427
011100 (28)
1356
1412
011011 (27)
1324
1389
011010 (26)
1317
1375
011001 (25)
1287
1352
011000 (24)
1282
1336
010111 (23)
1250
1313
010110 (22)
1245
1299
010101 (21)
1215
1277
010100 (20)
1210
1264
010011 (19)
1182
1242
010010 (18)
1174
1231
010001 (17)
1149
1210
010000 (16)
1141
1198
001111 (15)
1115
1178
001110 (14)
1109
1166
001101 (13)
1086
1145
001100 (12)
1078
1135
001011 (11)
1055
1106
001010 (10)
1047
1103
001001 (9)
1026
1067
001000 (8)
1019
1072
000111 (7)
998
1049
000110 (6)
991
1041
000101 (5)
976
1026
000100 (4)
963
1011
000011 (3)
950
996
000010 (2)
935
981
000001 (1)
922
966
000000 (0)
911
951
1 The lock ranges in this table are typical values. Actual lock ranges will vary
from device to device.
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