Datasheet

 2010 Microchip Technology Inc. DS22250A-page 5
MCP4902/4912/4922
ELECTRICAL CHARACTERISTIC WITH EXTENDED TEMPERATURE
Electrical Specifications: Unless otherwise indicated, V
DD
= 5V, V
SS
= 0V, V
REF
= 2.048V, Output Buffer Gain (G) = 2x, R
L
= 5 k to
GND, C
L
= 100 pF. Typical values are at +125°C by characterization or simulation.
Parameters Sym Min Typ Max Units Conditions
Power Requirements
Operating Voltage V
DD
2.7 — 5.5 V
Operating Current I
DD
— 400 — µA V
REF
input is unbuffered, all digi-
tal inputs are grounded, all analog
outputs (VOUT) are unloaded.
Code=000h
Hardware Shutdown
Current
I
SHDN
— 1.5 — µA POR circuit is turned-off
Software Shutdown Current I
SHDN_SW
— 5 — µA POR circuit stays turned-on
Power-On Reset threshold V
POR
—1.85— V
DC Accuracy
MCP4902
Resolution n 8 — — Bits
INL Error INL ±0.25 LSb
DNL DNL ±0.2 LSb Note 1
MCP4912
Resolution n 10 — — Bits
INL Error INL ±1 LSb
DNL DNL ±0.2 LSb Note 1
MCP4922
Resolution n 12 — — Bits
INL Error INL ±4 LSb
DNL DNL ±0.25 LSb Note 1
Offset Error V
OS
— ±0.02 — % of FSR Code 0x000h
Offset Error Temperature
Coefficient
V
OS
/°C — -5 — ppm/°C +25°C to +125°C
Gain Error g
E
— -0.10 — % of FSR Code = 0xFFFh, not including off-
set error
Gain Error Temperature
Coefficient
G/°C — -3 — ppm/°C
Input Amplifier (V
REF
Input)
Input Range – Buffered
Mode
V
REF
— 0.040 to
V
DD
– 0.040
—VNote 1
Code = 2048,
V
REF
= 0.2V p-p, f = 100 Hz and
1kHz
Input Range – Unbuffered
Mode
V
REF
0—V
DD
V
Input Impedance R
VREF
— 174 — k Unbuffered mode
Input Capacitance –
Unbuffered Mode
C
VREF
—7—pF
Note 1: Guaranteed monotonic by design over all codes.
2: This parameter is ensured by design, and not 100% tested.