MAX5167MCCM Maxim Integrated, MAX5167MCCM Datasheet - Page 10

• Manufacturer Part Number: MAX5167MCCM
• Description: Sample & Hold Amplifiers
• Manufacturer: Maxim Integrated
• Series: MAX5167r

Specifications of MAX5167MCCM

• Number Of Channels: 32
• Acquisition Time: 4 us
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: 0 C
• Mounting Style: SMD/SMT
• Package / Case: TQFP-48
• Minimum Dual Supply Voltage: - 4.75 V, + 9.5 V

both of the 32-channel devices. The A5 line toggles the
SELECT pins of both devices to select the active one.
The device that has CONFIG tied high responds to the
lower 32 addresses (000000 through 011111). The
device that has CONFIG grounded responds to the
upper 32 addresses (100000 through 111111).
The input of the MAX5167 feeds the inputs of 32 high-
impedance buffers. These buffers are what charge the
sample/hold capacitor through the multiplexer switch
resistance. The bias current of a selected buffer is
10µA, and this feeds into the 10pF input capacitance.
Figure 5
rents of the other 31 sample and holds are very small in
comparison to the bias current of the selected channel.
The MAX5167 does not require a special power-up
sequence to avoid latchup. The device requires three
separate supply voltages for operation. However, when
one or two of the voltages are not available, DC-DC
charge-pump (switched-capacitor) converters provide
a simple, efficient solution. The MAX860 provides volt-
age doubling or inversion, ideal for conversions from
+5V to +10V or from +5V to -5V.
32-Channel Sample/Hold Amplifier
with Output Clamping Diodes
Figure 4. 64 Output Sample-and-Hold Circuit
10
______________________________________________________________________________________
shows an equivalent input circuit. The bias cur-
A0–A4
A5
WR
INPUT
Input Drive Requirements
Powering the MAX5167
ADDR0–ADDR4
ADDR0–ADDR4
V
L
CONFIG
CONFIG
SELECT
SELECT
S/H
S/H
IN
IN
TRANSISTOR COUNT: 6961
Figure 5. Input Equivalent Circuit
MAX5167
MAX5167
10µA, I
NH
= LOW
I
BIAS
10pF
C
IN
Chip Information
OUT0
OUT1
OUT30
OUT31
OUT32
OUT33
OUT62
OUT63