ST7538P STMicroelectronics, ST7538P Datasheet - Page 8

• Manufacturer Part Number: ST7538P
• Description: Telecom Line Management ICs 1/2 Duplex FSK Modem
• Manufacturer: STMicroelectronics
• Type: Single Chipr

Specifications of ST7538P

• Product: Modem Chip
• Supply Voltage (max): 5.25 V, 12.5 V
• Supply Voltage (min): 4.75 V, 7.5 V
• Supply Current: 5 mA, 370 mA
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Package / Case: TQFP-44
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Table 5. Electrical Characteristcs (continued)
(AVcc = DVcc = +5V, PAVcc =+9 V, PAVss, SGND = DVss = 0V,-40°C ≤ Tamb ≤ 85°C, Fc = 86kHz, other Control
Register parameters as default value, unless otherwise specified).
ST7538
8/30
Zero Crossing Detection
Operational Amplifier
Serial Interface
ZC
C
C
C
ZC
Symbol
ZC
OUT(Source)
OUT(Sync)
GBWP
ZC
IN(Offset)
(OFFSET)
T
T
T
T
T
T
(HIGH)
T
(LOW)
Ts
CRP
CR
CC
DH
DS
DEL
H
B
Baud rate Bit Time (=1/
Zero Crossing Detection delay
(delay between the ZCIN and
ZCOUT signals)
Zero Crossing Detection Low
Threshold
Zero Crossing Detection High
Threshold
Zero Crossing Offset
Max Sync Current
Max Source Current
Input Terminals OFFSET
Gain Bandwidth Product
Setup Time
Hold Time
CLR/T vs. REG_DATA or RxTx
CLR/T vs. CLR/T
Setup Time
Hold Time
Parameter
BAUD
)
Control Register
bit 3 and bit 4
see table 11
Figure 23
see figure 6, 7, 8, 9 & 10
see figure 6, 7, 8, 9 & 10
see figure 6, 7, 8, 9 & 10
see figure 6, 7, 8, 9 & 10
see figure 6, 7, 8, 9 & 10
see figure 6, 7, 8, 9 & 10
Test Condition
Min.
T
T
-45
-20
-30
-38
T
15
T
B
B
5
6
H
B
/4
/4
1667
Typ.
833
417
208
-20
28
7
Max.
2*T
T
T
T
T
+45
+20
+38
-10
45
-5
B
B
B
B
1
9
5
2
/4
/2
/2
/2
B
MHz
Unit
mA
mV
mV
mV
mA
mV
µs
µs
ns
ns