参数资料
型号: ADA4940-2ACPZ-RL
厂商: Analog Devices Inc
文件页数: 10/33页
文件大小: 0K
描述: IC DIFF ADC DVR 18BIT LN 24LFCSP
标准包装: 5,000
放大器类型: 差分
电路数: 2
输出类型: 差分
转换速率: 95 V/µs
-3db带宽: 260MHz
电流 - 输入偏压: 1.1µA
电压 - 输入偏移: 60µV
电流 - 电源: 1.25mA
电流 - 输出 / 通道: 46mA
电压 - 电源,单路/双路(±): 3 V ~ 7 V
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 24-VFQFN 裸露焊盘,CSP
供应商设备封装: 24-LFCSP-VQ(4x4)
包装: 带卷 (TR)
Data Sheet
ADA4940-1/ADA4940-2
Rev. C | Page 17 of 32
8
–8
–6
–4
0
2
4
6
–2
0
1000
OU
TP
U
T
V
OLTA
GE
(
V
)
TIME (ns)
08452-
041
100
200
300
400
500
600
700
800
900
G = +2
VOUT, dm
2 × VIN
Figure 43. Output Overdrive Recovery, G = 2
100
10
1
10
100
1k
10k
100k
1M
10M
IN
PU
TV
OLTA
GE
N
OIS
E(
nV
/√
H
z)
FREQUENCY (Hz)
08452-
037
Figure 44. Voltage Noise Spectral Density, Referred to Input
1.50
–1.25
0
–2.75
0
100
OU
TP
U
T
V
OLTA
GE
(
V
)
D
ISA
B
L
E
PI
N
VO
L
T
A
G
E
(V)
TIME (s)
08452-
038
–2.50
–2.25
–2.00
–1.75
–1.50
–1.25
–1.00
–0.75
–0.50
–0.25
–1.00
–0.75
–0.50
–0.25
0
0.25
0.50
0.75
1.00
1.25
10
20
30
40
50
60
70
80
90
–OUT, VICM = 1V
+OUT, VICM = 1V
DISABLE
+IN
–OUT
+OUT
–FB
+FB
–IN
VOCM
0.1F
R1
R2
+2.5V
–2.5V
R1
VICM
DISABLE
0V
–2.5V
Figure 45. DISABLE Pin Turn-Off Time
2.0
–2.0
0.5
–0.5
0
80
VO
L
T
A
G
E
(V)
E
RRO
R
(
%)
TIME (ns)
08452-
065
–0.4
–0.3
–0.2
–0.1
0
0.1
0.2
0.3
0.4
–1.6
–1.2
–0.8
–0.4
0
0.4
0.8
1.2
1.6
10
20
30
40
50
60
70
%ERROR
OUTPUT
INPUT
VOUT, dm = 2V p-p
Figure 46. 0.1% Settling Time
100
10
1
0.1
0.01
0.1
1
10
100
O
UT
PUT
IM
PE
DANCE
(
)
FREQUENCY (MHz)
08452-
040
Figure 47. Closed-Loop Output Impedance Magnitude vs. Frequency, G = 1
2.50
–0.25
–2.75
0
2.0
OU
TP
U
T
V
OLTA
GE
(
V
)
D
ISA
B
L
E
PI
N
VO
L
T
A
G
E
(V)
TIME (s)
08452-
057
–2.50
–2.25
–2.00
–1.75
–1.50
–1.25
–1.00
–0.75
–0.50
–0.25
0
0.25
0.50
0.75
1.00
1.25
1.50
1.75
2.00
2.25
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
–OUT, VICM = 1V
DISABLE
+OUT, VICM = 1V
+IN
–OUT
+OUT
–FB
+FB
–IN
VOCM
0.1F
R1
R2
+2.5V
–2.5V
R1
VICM
DISABLE
0V
–2.5V
Figure 48. DISABLE Pin Turn-On Time
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