Datasheet

ADS931
4
SBAS060A
Top View SSOP
PIN CONFIGURATION
PIN DESIGNATOR DESCRIPTION
1+V
S
Analog Supply
2LV
DD
Output Logic Driver Supply Voltage
3 NC No Connection
4 NC No Connection
5 Bit 8 (LSB) Data Bit 8 (D7) LSB
6 Bit 7 Data Bit 7 (D6)
7 Bit 6 Data Bit 6 (D5)
8 Bit 5 Data Bit 5 (D4)
9 Bit 4 Data Bit 4 (D3)
10 Bit 3 Data Bit 3 (D2)
11 Bit 2 Data Bit 2 (D1)
12 Bit 1 (MSB) Data Bit 1 (D0) MSB
13 GND Analog Ground
14 GND Analog Ground
15 CLK Convert Clock Input
16 OE Output Enable, Active Low
17 Pwrdn Power Down Pin
18 +V
S
Analog Supply
19 GND Analog Ground
20 GND Analog Ground
21 LpBy Positive Ladder Bypass
22 REFT Reference Voltage Top
23 NC No Connection
24 REFB Reference Voltage Bottom
25 LnBy Negative Ladder Bypass
26 CM Common-Mode Pin
27 IN Analog Input
28 +V
S
Analog Supply
PIN DESCRIPTIONS
TIMING DIAGRAM
SYMBOL DESCRIPTION MIN TYP MAX UNITS
t
CONV
Convert Clock Period 30 100µsns
t
L
Clock Pulse Low 14 15 ns
t
H
Clock Pulse High 14 15 ns
t
D
Aperture Delay 2 ns
t
1
Data Hold Time, C
L
= 0pF 3.9 ns
t
2
New Data Delay Time, C
L
= 15pF max 12 ns
5 Clock Cycles
Data Invalid
t
D
t
L
t
H
t
CONV
N–5N–4N–3N–2N–1 N N+1 N+2
Data Out
Clock
Analog In
N
t
2
N+1
N+2
N+3
N+4
N+5
N+6
N+7
t
1
+V
S
LV
DD
NC
NC
Bit 8 (LSB)
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1 (MSB)
GND
GND
+V
S
IN
CM
LnBy
REFB
NC
REFT
LpBy
GND
GND
+V
S
Pwrdn
OE
CLK
ADS931
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15